SENTRON
Residual Current Protective Devices /
Arc Fault Detection Devices
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© Siemens AG 2016
Siemens · 10/2015
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2Introduction
45SV / 5SM3 RCCBs
13 SIQUENCE 5SM3/5SU1 universal
current sensitive RCCBs,
type B and type B+
19 Additional components
23 5SM2 RC units
26 5SU1 RCBOs
34 5SM6 AFD units
37 5SM6 AFD units
for PV applications
39 5ST busbars for
modular installation devices
42 5SM1 and 5SZ9 RCCB
socket outlets
43 Configuration
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
PH_04.book Seite 1 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
2Siemens · 10/2015
Introduction
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Overview
Devices Page Application Standards Used in
Non-residential
buildings
Residential
buildings
Industry
5SV RCCBs
4
Personnel, material and fire protection,
as well as protection against direct
contact.
SIGRES with active condensation pro-
tection for use in harsh environments.
Super resistant and selective versions
IEC/EN 61008
ÖVE EN 61008
ÖVE/ÖNORM E 8601
IEC/EN 62423
✓ ✓ ✓
5SM3 RCCBs
4
Personnel, material and fire protection,
as well as protection against direct
contact
IEC/EN 61008
ÖVE EN 61008
ÖVE/ÖNORM E 8601
IEC/EN 62423
✓ ✓ ✓
SIQUENCE 5SM3/5SU1
Universal current sensitive RCCBs,
type B and type B+
13
SIQUENCE, the technology of universal
current-sensitive residual current pro-
tective devices
VDE 0664-100
VDE 0664-200
VDE V 0664-110
✓-- ✓
Additional components
19
Remote controlled mechanisms,
auxiliary switches for all residual current
operated circuit breakers.
Leakage current measurement device
for fault locating and the optimum
selection of RCCBs
IEC/EN 62019 ✓-- ✓
RC units, 5SM2
23
The freely selectable combination of RC
units with miniature circuit breakers per-
mits the flexible configuration of RCBO
combinations
IEC/EN 61009 ✓-- ✓
5SU1 RCBOs
26
The ideal protection combination for all
electrical circuits due to the compact
device versions of RCCBs and minia-
ture circuit breakers in a single device
IEC/EN 61009 ✓ ✓ ✓
5SM6 AFD units
34
Enhanced fire protection through the
detection and isolation of arcing faults IEC/EN 62606 ✓ ✓ --
5ST busbars for modular
installation devices
39
Busbars in 10 mm
2
and 16 mm
2
save
space in the distribution board and time
during mounting.
-- ✓ ✓ ✓
5SM1 and 5SZ9 RCCB
Socket outlets
42
For retrofitting in existing installations VDE 0664 ✓ ✓ ✓
Configuration
43
This section tells you all you need to
know about RCCBs in combination with
miniature circuit breakers, with informa-
tion about tripping characteristics,
selectivity and breaking capacity
-- ✓ ✓ ✓
30 mA
2 3 4
10 mA
PH_04.book Seite 2 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
3
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Introduction
SIGRES
SIGRES RCCBs were developed for use in harsh ambient con-
ditions, such as swimming baths as protection against chlorine
and ozone, in the agricultural sector (ammonia), on building
sites and in the chemical industry (nitrogen oxide, sulfur dioxide,
solvents), in the food processing industry (hydrogen sulfide) and
in unheated rooms (dampness). The patented active condensa-
tion protection requires a continuous power supply and bottom
infeed if the RCCB is switched off.
When used in ambient conditions as defined in product stan-
dard EN 61008-1, the operation interval for pressing the test
button can be extended to once a year.
Super resistant
æ
Super resistant (short-time delayed) RCCBs meet the maximum
permissible break times for instantaneous devices. However,
by implementing a short-time delay they prevent unnecessary
tripping operations, and thus plant faults, when pulse-shaped
leakage currents occur – as is the case when capacitors are
switched on.
Selective
î
Can be used as upstream group switch for selective tripping
contrary to downstream, instantaneous or short-time delayed
RCCBs.
Note:
For more information on the subject of residual current protective
devices, see the technology primer
"Residual Current Protective Devices",
Article No.: E10003-E38-2B-G0090-7600.
Selection aid for finding the appropriate residual current protective
device
RCCB RCBO
SIGRES 500 V 50- 400 Hz
RC unit
K S
A
AC
3+N1+N 42
BCD
3
I201_15509b
F
B+
B
Design Selection
criterion
Type Equipment, circuit,
load current,
residual current
System, equipment,
ambient conditions
Equipment
Version
Number of poles
Additional
protection
I∆n ≤ 30 mA
Fire
protection
I∆n ≤ 300 mA
Trip conditions
limited I∆n
Installation
regulation
VDE 0100-410
Rated residual current I∆n
protection objective
-530
-7xx
-482
EquipmentRated current In
Trip conditions acc.
to VDE 0100-410
Equipment
Only with RCBOs with
MCB characteristic
VDS 3501
Residual current
protection
I∆n > 30mA
PH_04.book Seite 3 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
4Siemens · 10/2015
5SV / 5SM3 RCCBs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Overview
RCCBs are used in all systems up to 240/415 V AC. Devices of
type AC trip in the event of sinusoidal AC residual currents, type
A also trips in the event of pulsating DC residual currents.
In addition, RCCBs type F also detect residual currents with
mixed frequencies up to 1 kHz.
RCCBs with a rated residual current of maximum 30 mA are
used for personnel, material and fire protection, as well as for
protection against direct contact. RCCBs with a rated residual
current of 10 mA are primarily used in areas that represent an
increased risk for personnel.
Since the introduction of DIN VDE 0100-410, all socket outlet
current circuits up to 20 A must also be fitted with residual
current protective devices with a rated residual current of
max. 30 mA. This also applies to outdoor electrical circuits
up to 32 A for the connection of portable equipment.
Devices with a rated residual current of maximum 300 mA are
used as preventive fire protection in case of insulation faults.
RCCBs with a rated residual current of 100 mA are primarily
used outside Europe.
■
Benefits
• Instantaneous RCCBs with the N connection on the left-hand
side enable simple bus mounting with standard pin busbars
with miniature circuit breakers installed on the right-hand side
• Instantaneous RCCBs with the N connection on the right-hand
side can be bus-mounted with miniature circuit breakers using
a special pin busbar
• Instantaneous type A devices have a surge current withstand
capability with current waveform 8/20 μs of more than 1 kA,
super resistant of more than 3 kA and selective of more than
5 kA. This ensures safe operation
• SIGRES has an extremely long service life due to a patented
active condensation protection and identical dimensions en-
able the quick and easy replacement of existing instanta-
neous RCCBs
• Super resistant devices increase system availability, as un-
necessary tripping is prevented in power supply systems with
short-time glitches
• Selective RCCBs increase system availability as a staggered
tripping time enables the selective tripping of RCCBs con-
nected in series in the event of a fault
• Auxiliary switches or remote controlled mechanisms are also
available as additional components
• The operating handle and the test button can be locked by
means of a handle locking device
• All additional components that match the 5SY and 5SL
miniature circuit breakers can also be fitted on the 5SV
PH_04.book Seite 4 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SV / 5SM3 RCCBs
■
Technical specifications
5SV3
1)
5SV residual current operated circuit breakers have been developed for
50 Hz systems and can detect and shut down ground fault currents of this
frequency, but in the case of residual currents that deviate markedly from
this frequency, or that have a higher proportion of harmonics, the trip
values increase slightly.
Instantaneous SIGRES Super resistant Selective
Standards IEC/EN 61008-1 (VDE 0664-10); IEC/EN 61008-2-1 (VDE 0664-11);
IEC/EN 61543 (VDE 0664-30); IEC/EN 62423 (VDE 0664-40)
Surge current withstand capability
• Type A with current
waveform 8/20 µs Acc. to EN 60060-2
(VDE 0432-2) kA > 1 > 3 > 5
• Type F with current
waveform 8/20 µs Acc. to EN 60060-2
(VDE 0432-2) kA -- -- > 3 --
Minimum operational voltage for test function operation
• 30 mA devices V AC 195
• Non-30 mA devices V AC 100
• 24 V devices V AC 20
Test cycles 1/2 year 1 year 1/2 year
Insulation coordination
• Overvoltage category III
Pollution degree 2
Terminal conductor cross-sections
• 1-wire
-Solid (≤ 10 mm
2
) / stranded (≥ 16 mm
2
)mm
2
0.75 ... 35
- Finely stranded with non-insulated end sleeve mm
2
0.75 ... 25
- Finely stranded with insulated end sleeve mm
2
0.75 ... 25
- Finely stranded without end sleeve mm
2
1 ... 35
• 2-wire, same cross-section, same conductor type
-Solid (≤ 10 mm
2
) / stranded (≥ 16 mm
2
)mm
2
0.75 ... 10
- Finely stranded with non-insulated end sleeve mm
2
0.75 ... 4
- Finely stranded with insulated end sleeve mm
2
0.75 ... 4
- Finely stranded without end sleeve mm
2
1 ... 4
• 1-wire + busbar (pin thickness 1.5 mm)
-Solid (≤ 10 mm
2
) / stranded (≥ 16 mm
2
)mm
2
10 ... 25
- Finely stranded with non-insulated end sleeve mm
2
6 ... 25
- Finely stranded with insulated end sleeve mm
2
6 ... 16
Terminal tightening torque
•Up to I
n
= 80 A Nm 2.5
•At I
n
= 100 A, 125 A Nm 3.0 ... 3.5
Mains connection Top or bottom Bottom Top or bottom
Rated frequency Hz 50/60
1)
Mounting position (on a standard mounting rail) Any
Degree of protection Acc. to EN 60529
(VDE 0470-1) IP20, if the distribution board is installed, with connected conductors
Touch protection Acc. to EN 50274
(VDE 0660-514) Finger and back-of-hand safe
Service life Average number of switching cycles
Test cycle acc. to IEC/EN 61008 > 10000
Storage temperature °C -40 ... +75
Ambient temperature °C -25 ... +45,
marked with
Resistance to climate Acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
CFC and silicone-free Yes
-25
PH_04.book Seite 5 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
6Siemens · 10/2015
5SV / 5SM3 RCCBs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Power losses per conducting path
under rated current load
MLFB Power losses per
conducting path P
v
[W]
MLFB Power losses per
conducting path P
v
[W]
5SV3111-6 0.7 5SV3612-6 0.6
1)
Note:
For SIGRES versions, the power ratings below must be added
for each device for heating of the holding magnet release:
• 2 MW: 0.33 W
• 4 MW: 0.4 W
5SV3111-6KL 0.7 5SV3612-6KK01 0.5
5SV3311-6 0.4 5SV3612-6KL 0.6
5SV3311-6KK12 0.5
1)
5SV3612-8 0.5
5SV3311-6KK13 0.4 5SV3614-3 1.0
5SV3311-6KL 0.4 5SV3614-6 1.6
5SV3312-3 0.8 5SV3614-6KK01 1.0
5SV3312-6 1.0 5SV3614-6KL 1.6
5SV3312-6KK01 0.8 5SV3614-7 1.0
5SV3312-6KK12 0.8
1)
5SV3614-8 1.0
5SV3312-6KK13 1.0 5SV3614-8KL 1.0
5SV3312-6KL 1.0 5SV3616-3 2.7
5SV3314-3 1.5 5SV3616-6 2.7
5SV3314-6 2.6 5SV3616-6KK01 2.7
5SV3314-6KK01 1.5 5SV3616-6KL 2.7
5SV3314-6KK12 1.5
1)
5SV3616-8 2.7
5SV3314-6KK13 2.6 5SV3616-8KL 2.7
5SV3314-6KL 2.6 5SV3617-3 3.9
5SV3314-6LA 1.5 5SV3617-6 3.9
5SV3314-6LA01 1.5 5SV3617-6KK01 3.9
5SV3316-3 5.3 5SV3617-6KL 3.9
5SV3316-6 5.3 5SV3617-7 3.9
5SV3316-6KK01 5.3 5SV3617-8 3.9
5SV3316-6KK12 5.3
1)
5SV3642-3 0.8
5SV3316-6KK13 5.3 5SV3642-6 0.7
5SV3316-6KL 5.3 5SV3642-6KK01 0.8
5SV3317-3 5.6 5SV3642-6KK12 0.8
1)
5SV3317-6 5.6 5SV3642-6KL 0.7
5SV3317-6KK01 5.6 5SV3642-8 0.8
5SV3317-6KL 5.6 5SV3644-3 1.8
5SV3342-3 0.8 5SV3644-6 2.0
5SV3342-6 1.3 5SV3644-6KK01 1.8
5SV3342-6KK01 0.8 5SV3644-6KK12 1.8
1)
5SV3342-6KK03 1.3 5SV3644-6KL 2.0
5SV3342-6KK12 0.8
1)
5SV3644-7 1.8
5SV3342-6KL 1.3 5SV3644-8 1.8
5SV3344-3 1.8 5SV3644-8LA 1.8
5SV3344-6 3.9 5SV3646-3 3.9
5SV3344-6KK01 1.8 5SV3646-6 3.9
5SV3344-6KK03 3.9 5SV3646-6KK01 3.9
5SV3344-6KK12 1.8
1)
5SV3646-6KK12 3.9
1)
5SV3344-6KL 3.9 5SV3646-6KL 3.9
5SV3344-6LA 1.8 5SV3646-8 3.9
5SV3344-6LA01 1.8 5SV3646-8KK12 3.9
1)
5SV3346-3 3.9 5SV3646-8KL 3.9
5SV3346-6 3.9 5SV3646-8LA 3.9
5SV3346-6KK01 3.9 5SV3647-3 4.1
5SV3346-6KK12 3.9
1)
5SV3647-6 4.1
5SV3346-6KL 3.9 5SV3647-6KK01 4.1
5SV3346-6LA 3.9 5SV3647-6KK12 4.1
1)
5SV3346-6LA01 3.9 5SV3647-6KL 4.1
5SV3347-3 4.1 5SV3647-7 4.1
5SV3347-6 4.1 5SV3647-8 4.1
5SV3347-6KK01 4.1 5SV3652-6 0.8
5SV3347-6KK12 4.1
1)
5SV3654-6 1.8
5SV3347-6KL 4.1 5SV3656-6 3.9
5SV3352-6 0.8 5SV3657-6 4.1
5SV3354-6 1.8 5SV3742-6 0.8
5SV3356-6 3.9 5SV3744-6 1.8
5SV3357-6 4.1 5SV3746-6 3.9
5SV3412-6 0.6 5SV3746-6KL 3.9
5SV3412-6KL 0.6 5SV3747-6 4.1
5SV3414-6 1.6 5SV3846-8 3.9
5SV3414-6KL 1.6 5SV3312-6BA 1.0
PH_04.book Seite 6 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SV / 5SM3 RCCBs
5SV3416-6 2.7 5SV3314-6BA 2.6
1)
Note:
For SIGRES versions, the power ratings below must be added
for each device for heating of the holding magnet release:
• 2 MW: 0.33 W
• 4 MW: 0.4 W
5SV3416-6KL 2.7 5SV3316-6BA 5.3
5SV3416-8 5.3 5SV3342-6BA 1.3
5SV3417-6 3.9 5SV3344-6BA 3.9
5SV3417-6KL 3.9 5SV3346-6BA 3.9
5SV3442-6 0.7 5SV3612-6BA 0.6
5SV3444-6 2.0 5SV3614-6BA 1.6
5SV3444-6LA 1.8 5SV3616-6BA 2.7
5SV3444-6LA01 1.8 5SV3642-6BA 0.7
5SV3444-8 1.8 5SV3644-6BA 2.0
5SV3444-8LA 1.8 5SV3646-6BA 3.9
5SV3446-6 3.9 5SV5311-6KL 0.4
5SV3446-6LA 3.9 5SV5312-6KL 1.0
5SV3446-6LA01 3.9 5SV5314-6KL 2.6
5SV3446-8 3.9 5SV5342-6KL 1.3
5SV3446-8LA 3.9 5SV5344-6KL 3.9
5SV3447-6 4.1 5SV5346-6KL 3.9
5SV3612-3 0.5 5SV5646-6KL 3.9
Power losses per conducting path
under rated current load
MLFB Power losses per
conducting path P
v
[W]
MLFB Power losses per
conducting path P
v
[W]
PH_04.book Seite 7 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
8Siemens · 10/2015
5SV / 5SM3 RCCBs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SM3
Instantaneous Selective
Standards IEC/EN 61008-1 (VDE 0664-10); IEC/EN 61008-2-1 (VDE 0664-11);
IEC/EN 61543 (VDE 0664-30); IEC/EN 62423 (VDE 0664-40)
Surge current withstand capability
• Type A with current
waveform 8/20 µs Acc. to EN 60060-2
(VDE 0432-2) kA > 1 > 5
Minimum operational voltage for test function operation V AC 195
Test cycles 1/2 year
Insulation coordination
• Overvoltage category III
Pollution degree 2
Terminal conductor cross-sections
•2 MW I
n
= 100 A, 125 A mm
2
1.5 ... 50
•4 MW I
n
= 100 A, 125 A mm
2
2.5 ... 50
Terminal tightening torque
•I
n
= 100 A, 125 A Nm 3.0 ... 3.5
Mains connection Top or bottom
Mounting position (on a standard mounting rail) Any
Degree of protection Acc. to EN 60529
(VDE 0470-1) IP20, if the distribution board is installed, with connected conductors
Touch protection Acc. to EN 50274
(VDE 0660-514) Finger and back-of-hand safe
Service life Average number of switching cycles > 10000
Storage temperature °C -40 ... +75
Ambient temperature °C -25 ... +45,
marked with
Resistance to climate Acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
CFC and silicone-free Yes
-25
Power losses per conducting path
under rated current load
Note:
0.4 W per unit must be added for SIGRES versions.
Number of
poles
Rated current Rated residual
current I
Δn
[mA]
Power losses per
conducting path P
v
[W]
216 10 2.5
30 0.82
25 30 2
100/300 1
40 30 4.3
100/300 2.5
63 30 4.2
100/300 3.25
80 30 4.4
100/300 3.65
425 30 1.2
300/500 0.47
40 30 3
100/300/500 1.2
63 30 4.9
100/300/500/1000 3
80 30 5.8
300 4.8
125 30 8.9
100/300/500 8.9
PH_04.book Seite 8 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SV / 5SM3 RCCBs
Table: Possible residual current forms and suitable residual current devices
L1
N
PE
iL
iF1 iF2
M
L1
N
PE
iL
iF1 iF2
M
L2
L1
N
PE
iL
iF1 iF2
M
L2
L3
iF2
t
iF2
t
iF2
t
iL
t
iL
t
iL
t
mX
mX
mX
mX
mX
mX
mX
mX
mX
mX
iF1
iF1
iF1
iF1
iF1
iF1
iF1
iF1
iF1
iF1
iF1
iF1
iF1
Suitable RCCB type Circuits Load current Residual current
i201_16045
11
12
13
FB
B+
AAC
PH_04.book Seite 9 Montag, 11. Januar 2016 3:03 15
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10 Siemens · 10/2015
5SV / 5SM3 RCCBs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Configuration
When using residual current protective devices type F, please
note the following:
• They are not suitable for equipment that can generate smooth
DC residual currents (see Table, page 9, circuits 8 to 13).
• They are not suitable for installation in networks with frequen-
cies that deviate from the rated frequency (50 Hz) (not at the
outgoing terminal of a frequency converter).
• When configuring and setting up electrical systems with
type F, the same applies as for residual current protective
devices type A, i.e. electrical loads that can generate smooth
DC residual currents in the event of a fault are assigned their
own circuit with a universal current-sensitive residual current
protective device (type B or type B+).
It is not permitted to branch off electrical circuits with these types of
electrical loads downstream of pulse-current-sensitive residual current
protective devices (type A or type F).
kHz
Type
AC/A/F
Type
AC/A/F
Type
B/B+
Wh
i201_18413
≥ 300 mA
n
IS
≤ 100 mA
n
I≥ 30 mA
n
I
kHz
Type
AC/A/F
Type
AC/A/F
Type
B/B+
Wh
i201_18414
≥ 300 mA
n
IS
≤ 100 mA
n
I≥ 30 mA
n
I
PH_04.book Seite 10 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SV / 5SM3 RCCBs
■
Dimensional drawings
5SV3 dimensional drawings
5SM3 dimensional drawings
RCCBs, type A and type AC
1P+N, 2 MW RCCBs, type A and type AC
3P+N, 4 MW
35,8
I201_18655
89,8
6,2
43,9
45,15
64
71
20
43,9
64
71
20
45,15
I201_18656
6,2
71,8
89,8
RCCBs up to 80 A
1P+N
2 MW 1P+N
2.5 MW 3P+N
4 MW
RCCBs 100 and 125 A
1P+N, 2 MW 3P+N, 4 MW
36 45 72
45
90
44
647
I201_07860c
1N
2N
1N
2N
1N
2N
3
4
5
6
45
88
4436
65
7
70
N2
N1
I201_12856a
72
1/L1 3/L2 5/L3 7/N
2/L1 4/L2 6/L3 8/N
I201_07830a
45
87
44
65
7
68
PH_04.book Seite 11 Montag, 11. Januar 2016 3:03 15
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12 Siemens · 10/2015
5SV / 5SM3 RCCBs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Circuit diagrams
Graphic symbols
Note:
The infeed for SIGRES devices must be from below at terminals
2, 4, 6 and N.
1P+N 3P+N
N connection, right
N connection, left N connection, left
2N
N1
Tx
I201_13636
246 N
15N3
Tx
I201_13637
2N
N1
Tx
I202_25058
246N
N351
I201_13638
PH_04.book Seite 12 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
SIQUENCE 5SM3/5SU1 universal current-sensitive RCCBs, type B and type B+
■
Overview
Frequency converters, medical devices and UPS systems are
seeing increasing use in industry. Smooth DC residual currents
or currents with low residual ripple may occur in the event of
faults on these devices.
Type A residual current protective devices are unable to detect
these smooth DC residual currents. Furthermore, such smooth
DC residual currents make type A devices increasingly insensi-
tive to AC residual currents and pulsating DC residual currents.
If a fault occurs, there is therefore no tripping and the desired
protective function is no longer assured.
UC-sensitive residual current protective devices of types B and
B+ have an additional transformer which is supplied with a con-
trol signal. This enables an evaluation of the change of the trans-
former's operating range caused by smooth DC residual cur-
rents, thus ensuring the desired protective function.
The residual current protective devices of type B are suitable for
use in three-phase current systems before input circuits with rec-
tifiers. They are not intended for use in DC systems and in net-
works with operating frequencies other than 50 Hz or 60 Hz.
The devices in this series are designed as residual current oper-
ated circuit breakers (RCCBs) up to 80 A and as residual current
circuit breakers with integral overcurrent protection (RCBOs) for
100 A or 125 A in Characteristics C or D.
All universal current-sensitive RCCBs, type B or B+ are now also
available in a SIGRES version, meaning they are also ideal for
use in harsh ambient conditions.
When used in ambient conditions as defined in product stan-
dard EN 61008-1, the operation interval for pressing the test
button can be extended to once a year.
■
Benefits
• Universal current-sensitive residual current protective devices
detect not only AC residual currents and pulsating DC residual
currents, but also smooth DC residual currents, thus ensuring
the desired protective function with all types of residual current
• With type B, the tripping characteristic is adapted to suit the
increase of leakage currents at higher frequencies in systems
with capacitive impedances, thus ensuring greater operating
safety
• Type B+ versions offer enhanced preventative fire protection
and correspond to the prestandards DIN V VDE V 0664-110
and/or DIN V VDE V 0664-210 and VdS Directive 3501
• The RCBO is a compact device for up to 125 A. It provides not
only personnel, material and fire protection but also overload
and short-circuit protection for cables. This reduces wiring
and mounting outlay
• The RCBOs offer external remote tripping over terminals
Y1/Y2 This supports implementation of central OFF circuits.
PH_04.book Seite 13 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
14 Siemens · 10/2015
SIQUENCE 5SM3/5SU1 universal current-sensitive RCCBs, type B and type B+
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Technical specifications
SIQUENCE, 5SM3 RCCBs, type B and type B+ SIQUENCE, 5SU1 RCBOs type B and type B+
Standards IEC/EN 62423 (VDE 0664-40);
IEC/EN 61543 (VDE 0664-30);
additionally applicable for type B+;
DIN VDE 0664-400
IEC/EN 62423 (VDE 0664-40);
IEC/EN 61543 (VDE 0664-30);
additionally applicable for type B+;
DIN VDE 0664-401
Versions 1P+N 3P+N 4P
Tripping characteristic -- -- C, D
Surge current withstand capability
With current waveform 8/20 µs
Acc. to EN 60060-2 (VDE 0432-2)
• Super resistant kA > 3 > 3 > 3
• Selective kA -- > 5 > 5
Minimum operational voltage for test
function operation
V AC 195 195 195
Rated voltages U
n
V AC 230 400 400, 480
Rated frequency f
n
Hz 50 ... 60
Rated currents I
n
A16, 25, 40, 63 25, 40, 63, 80 100, 125
Rated residual currents I
Δn
mA 30, 300 30, 300, 500 30, 300
Rated breaking capacity
•I
m
A800 --
•I
cn
kA -- 10
Insulation coordination
• Overvoltage category III
Conductor cross-sections
• Solid and stranded mm
2
1.5 ... 25 6 ... 50
• Finely stranded, with end sleeve mm
2
1.5 ... 16 6 ... 35
Terminal tightening torque
For all devices Nm 2.5 ... 3.0 3.0 ... 3.5
Mains connection Either top or bottom
(bottom for the effectiveness of the SIGRES function even when switched off)
Mounting position (on a standard
mounting rail)
Any
Degree of protection according to EN 60529
(VDE 0470-1) IP20, if the distribution board is installed, with connected conductors
Touch protection
Acc. to EN 50274 (VDE 0660-514) Finger and back-of-hand safe
Service life
Average number of switching cycles > 10000 switching cycles
Storage temperature °C -40 ... +75
Ambient temperature °C -25 ... +45,
marked with
Resistance to climate acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
CFC and silicone-free Yes
-25
Power losses per conducting path under rated current load
Note:
0.4 W per unit must be added for SIGRES versions.
Number of
poles
Rated current Rated residual
current I
Δn
[mA]
Power losses per
conducting path P
v
[W]
2/4 16 30/300 0.17
25 30/300 0.42
40 30/300 1.09
63 30/300/500 2.7
80 30/300/500 4.35
PH_04.book Seite 14 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
15
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
SIQUENCE 5SM3/5SU1 universal current-sensitive RCCBs, type B and type B+
■
Characteristic curves
Tripping current as a function of frequency for type B
Tripping current as a function of frequency for type B+
I202_02428a
Frequency (Hz)
Tripping current (mA)
Tripping values for rated residual current 30 mA
Tripping values for rated residual current 300 mA
Tripping values for rated residual current 300 mA S
Tripping values for rated residual current
500 mA / 500 mA S
Upper limit according to VDE 0664-100 for 30 mA
Upper limit according to VDE 0664-100 for 300 mA
Upper limit according to VDE 0664-100 for 500 mA
100001000100101
10000
1000
100
10
I201_18122
Frequency (Hz)
Tripping current (mA)
Tripping values for rated residual current 30 mA
Tripping values for rated residual current 300 mA
Upper limit according to DIN V VDE V 0664-110 and DIN V VDE V 0664-210 for 30 mA
Upper limit according to DIN V VDE V 0664-110 and DIN V VDE V 0664-210 for 300 mA
100001000100101
10000
1000
100
10
PH_04.book Seite 15 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
16 Siemens · 10/2015
SIQUENCE 5SM3/5SU1 universal current-sensitive RCCBs, type B and type B+
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Dimensional drawings
■
Circuit diagrams
Graphic symbols
SIQUENCE RCCBs, type B and type B+
1P+N, 4 MW SIQUENCE RCCBs, type B and type B+
3P+N, 4 MW
SIQUENCE RCBOs, type B and type B+
4P, 11 MW
I201_13972
44
64
72
7
45
90
N1
N2
T
T
72
N642
N531
I201_12429a
45
44
90
647
45
90
max 67
7
198 44
70
I201_13622
SIQUENCE RCCBs, type B
and type B+ SIQUENCE RCCBs, type B
and type B+ SIQUENCE RCBOs, type B
and type B+
1P+N, 4 MW 3P+N, 4 MW 4P, 11 MW
I201_13973
N2
N1
T
135N
246N
I201_13765a
Y1 Y2 1 3 5 7
2468
I201_13766
PH_04.book Seite 16 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
17
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
SIQUENCE 5SM3/5SU1 universal current-sensitive RCCBs, type B and type B+
■
More information
Device configuration
Universal current-sensitive protective devices are based on a
pulse-current-sensitive circuit-protection device with tripping in-
dependent of line voltage, supplemented with an auxiliary unit
for the detection of smooth DC residual currents. The following
diagrams show the basic design.
The summation current transformer W1 monitors the electrical
system for AC and pulse current-type residual currents. The
summation current transformer W2 detects the smooth DC
residual currents and, in the event of a fault, relays the tripping
command through electronic unit E to release A, which uses the
mechanics to disconnect the circuit.
Design of RCCBs type B and type B+
Design of RCBOs type B and type B+
Method of operation
The universal current-sensitive residual current protective de-
vices work independently of the supply voltage compliant with
applicable requirements in Germany for Type A according to
DIN VDE 0664-100.
A voltage supply is required solely for the detection of smooth
DC residual currents by a second transformer. This is done from
all system cables and is dimensioned so that the electronics still
reliably trip even with a voltage reduction to 50 V.
This ensures tripping for smooth DC residual currents, as long as
such residual current waveforms can occur, even in the event of
faults in the electrical power supply, e.g. an N-conductor break.
This means that the pulse-current-sensitive breaker component,
which trips regardless of line voltage, will still reliably trigger the
tripping operation – even in the highly unlikely event that two
phase conductors and the neutral conductor fail – if the remain-
ing intact phase conductor presents a fire hazard due to a
ground fault.
The residual current protective devices of type B are suitable for
use in three-phase current systems before input circuits with rec-
tifiers. They are not intended for use in DC systems and in net-
works with operating frequencies other than 50 Hz or 60 Hz.
RCBOs are a combination of an RCCB and a miniature circuit
breaker for up to 125 A in a single compact device.
This means they provide not only personnel, property and fire
protection, but also overload and short-circuit protection for
cables. The mechanics of the residual current protective device
act on the tripping unit of the miniature circuit breaker, which dis-
connects the circuit.
MMechanics of the RCCB
LS Miniature circuit breaker component
ARelease
EElectronics for tripping in the event of smooth DC residual currents
nSecondary winding
W1 Summation current transformer for detection of sinusoidal residual
currents
W2 Summation current transformer for detection of smooth DC residual
currents
TTest equipment
E
642 N
T
An
n
W1
W2
I201_13608a
M
5
31 N
E
642 8
T
An
n
W1
W2
I201_13609b
5
31 7
MLS
PH_04.book Seite 17 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
18 Siemens · 10/2015
SIQUENCE 5SM3/5SU1 universal current-sensitive RCCBs, type B and type B+
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Protective effect at high frequencies
In addition to the described residual current waveforms
(AC residual currents, pulsating and smooth DC residual
currents), AC residual currents with a wide range of frequen-
cies may also occur on electronic equipment such as rectifiers
in frequency converters or computer tomographs as well as at
the outgoing terminal of a frequency converter.
Requirements for frequencies up to 2 kHz are defined in the
device regulations DIN VDE 0664-100.
To date, only limited statements can be made with regard to the
risk of ventricular fibrillations (up to 1 kHz) for frequencies higher
than 100 Hz. No reliable statements can be made on any further
effects of thermal or electrolytic influence on the human
organism.
For this reason, protection against direct contact is only possible
for frequencies up to 100 Hz.
For higher frequencies, protection against indirect contact must
be implemented under consideration of the frequency response
of the residual current protective device, the maximum permissi-
ble touch voltage up to 50 V and permissible grounding resis-
tance derived from this information.
1)
For type B+ the value is allowed to be up to 120 Ω at 50 V and 60 Ω at 25 V.
Recommended maximum grounding resistance for SIQUENCE universal
current-sensitive residual current protective devices type B and type B+.
Versions
Super resistant
æ
:
Short-time delayed tripping in the case of transient leakage
currents. High surge current withstand capability > 3 kA.
Selective
î
:
Can be used as upstream group switch for selective tripping
contrary to a downstream, instantaneous or super resistant
RCCB.
Configuration
DIN VDE 0100-530 "Selection of protective devices" also
describes the configuration of systems with residual current
protective devices.
EN 50178 (DIN VDE 0160) "Electronic equipment for use in
power installations" describes, among other things, how to
select the type of residual current protective device suitable.
When configuring and installing electrical installations, electrical
loads that can generate smooth DC residual currents in the
event of a fault must be assigned a separate electrical circuit
with a universal current-sensitive residual current protective
device (type B):
It is not permitted to branch electrical circuits with these types of
electrical loads after pulse-current-sensitive residual current
protective devices (type A):
Rated residual current Max. permissible grounding resistance
for touch voltage
50 V 25 V
30 mA 160 Ω80 Ω
300 mA 16 Ω
1)
8 Ω
1)
500 mA 10 Ω5 Ω
S
n
nn
≥
≤≥
I201_13610c
Type
AC/A
300 mA
Type
AC/A
100 mA
Type
B/B+ 30 mA
Wh
230/400 V AC,
3-phase
Wh
Type
AC/A 300 mA
Type
AC/A
100 mA
Type
B/B+
30 mA
≥
≤≥
S
230/400 V AC,
3-phase
n
nn
I201_13611c
PH_04.book Seite 18 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
19
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Additional components
■
Overview
Auxiliary switches (AS)
The auxiliary switch (AS) always signals the contact position,
regardless of whether the RCCB was tripped manually or as the
result of a fault. An additional version is also available for the
switching of small currents and voltages for the control of pro-
grammable control systems (PLCs) acc. to EN 61131-2. The
auxiliary switch with test button enables the testing of control
circuits without the need to switch the RCCB.
Fault signal contacts (FC)
The fault signal contact (FC) signals automatic breaking in the
event of a fault. If the fault signal contact is activated, the contact
position does not change if the RCCB is tripped manually. Fault
signal contacts with TEST and RESET buttons enable testing of
control circuits without the need to trip the RCCB. The red RESET
button integrated in the handle also indicates automatic tripping
of the RCCB. The signal can be acknowledged manually using
the RESET button.
Shunt trips (ST)
Shunt trips are used for the remote tripping of RCCBs.
Undervoltage releases (UR)
Undervoltage releases are integrated (e.g. in EMERGENCY
STOP loops), thus ensuring tripping in the event of an emer-
gency, which, in turn, ensures disconnection of the control circuit
according to EN 60204. In the event that the voltage is inter-
rupted or too low, it also trips, i.e. prevents activation of the
RCCB.
Remote controlled mechanisms are used for the remote ON/OFF
switching of RCCBs. They also enable local manual switching.
A blocking function permits maintenance work. A tripped RCCB
must be acknowledged prior to switching back on.
The leakage current measurement device detects the leakage
currents – like the circuit breaker – thus providing a direct state-
ment as to the current loading of the RCCB. It is used to measure
leakage currents up to 300 mA. This requires a voltmeter with an
internal resistance over 1 MΩ/V and a measuring range for AC
voltages of U
rms
= 1 mV to 2 V. For the fault-free operation of an
RCCB, the measured leakage current should be no greater than
1/3 of the rated residual current.
■
Benefits
Can be universally retrofitted with all additional components
• Captive metal brackets on the additional components ensure
the quick and easy mounting of devices without the need for
tools.
• Fault signal contacts with TEST and RESET button enable
simple testing of auxiliary circuits and, in the event of a fault,
acknowledgement of the fault over the RESET button, without
the need to switch the RCCBs.
• The auxiliary switches with TEST button enable simple manual
testing of control circuits during operation of the entire instal-
lation without the need to switch the RCCBs.
• Bus systems, such as instabus KNX, AS-Interface bus or
PROFIBUS, can be integrated in the communication over
binary inputs
• The leakage current measurement device enables the sys-
tematic selection of the rated residual current, thus preventing
inadvertent tripping of an RCCB.
■
Technical specifications
Auxiliary switches (AS) Auxiliary switches (AS)
5SW330. 5SW3330
Standards EN 62019
Terminals
• Conductor cross-section mm
2
0.75 ... 2.5
• Tightening torque Nm 0.5
Short-circuit protection B6 or C6 or gL/gG 6 A fuse
Min. contact load 50 mA/24 V
Max. contact load
• 230 V AC, AC-12 A 6 5
• 230 V AC, AC-14 A 3.6 --
• 220 V DC, DC-12 A 10.5
PH_04.book Seite 19 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
20 Siemens · 10/2015
Additional components
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Auxiliary switches (AS) Fault signal contacts (FC)
5ST3010, 5ST3010-2
5ST3011, 5ST3011-2
5ST3012, 5ST3012-2
5ST3013, 5ST3013-2
5ST3014, 5ST3014-2
5ST3015, 5ST3015-2
5ST3020, 5ST3020-2
5ST3021, 5ST3021-2
5ST3022, 5ST3022-2
Standards EN 62019; IEC/EN 60947-5-1; UL 1077; CSA C22.2 No. 235
Approvals www.siemens.com/lowvoltage/certificates
Short-circuit protection Miniature circuit breaker or gG 6 A fuse
Contact load
•Min. 50 mA, 24 V 1 mA/5 V DC 50 mA, 24 V
•Max. -- 50 mA/30 V DC --
• 400 V AC, AC-14, NO A 2-- 2
• 230 V AC, AC-14, NO A 6-- 6
• 400 V AC, AC-13, NC A 2-- 2
• 230 V AC, AC-13, NC A 6-- 6
• 220 V DC, DC-13, NO+NC A 1-- 1
• 110 V DC, DC-13, NO+NC A 1-- 1
• 60 V DC, DC-13, NO+NC A 3-- 3
• 24 V DC, DC-13, NO+NC A 6-- 6
Service life, on average, with rated load 20 000 actuations 20000 actuations 20000 actuations
Conductor cross-sections mm
2
0.5 ... 2.5 0.5 ... 2.5 0.5 ... 2.5
AWG 22 ... 14 22 ... 14 22 ... 14
Terminals
• Terminal tightening torque Nm 0.5 0.5 0.5
lbs/in. 4.5 4.5 4.5
Mounting position Any Any Any
Ambient temperature °C -25 ... +55 -25 ... +55 -25 ... +55
Storage temperature °C -40 ... +75 -40 ... +75 -40 ... +75
Resistance to climate Acc. to IEC 60068-2-30 Cycles 28
Shock Acc. to IEC 60068-2-27 m/s 50 at 11ms half-sine
Resistance to vibrations Acc. to IEC 60068-2-6 m/s
2
50 at 10 ... 150 Hz
Undervoltage releases (UR) Shunt trips (ST)
5ST304. 5ST3030 5ST3031
Standards EN 60947-1
Rated voltages U
n
V AC 230 110 ... 415 24 ... 48
V DC 24, 110 110 24 ... 48
• Operating range U
n
0.85 ... 1.1 x U
n
0.7 ... 1.1 x U
n
• Rated frequency f
n
Hz -- 50 ... 60
Response limits
• Tripping < 0.35 ... 0.7 × U
n
--
Short-circuit protection Miniature circuit breakers B/C 6 A or fuse gG 6 A
Minimum contact load 50 mA, 24 V 50 mA, 24 V
Tripping operations max. 2000 max. 2000
Service life, on average, with rated load 20000 actuations 20000 actuations
Conductor cross-sections mm
2
0.5 ... 2.5 0.5 ... 2.5
AWG 22 ... 14 22 ... 14
Terminals
• Terminal tightening torque Nm 0.8 0.8
lbs/in. 6.8 6.8
Mounting position Any Any
Ambient temperature °C -25 ... +55 -25 ... +55
Storage temperature °C -40 ... +75 -40 ... +75
Resistance to climate Acc. to IEC 60068-2-30 Cycles 28
Shock Acc. to IEC 60068-2-27 m/s 50 at 11ms half-sine
Resistance to vibrations Acc. to IEC 60068-2-6 m/s
2
50 at 10 ... 150 Hz
Switching frequency --
Switching duration s--
Minimum command duration s--
Rated power dissipation VA --
Behavior in the event of control voltage failure --
PH_04.book Seite 20 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
21
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Additional components
■
Dimensional drawings
5ST3010
5ST3011
5ST3012
5ST3013
5ST3014
5ST3015
5ST3020
5ST3021
5ST3022
5ST3030
5ST3031
5ST3040
5ST3041
5ST3042
5ST3043
5ST3044
5ST3045
5ST3050
5ST3010-2
5ST3011-2
5ST3012-2
5ST3013-2
5ST3014-2
5ST3015-2
5ST3020-2
5ST3021-2
5ST3022-2
Auxiliary switches (AS) for
RCCBs for 5SM3 up to 80 A Auxiliary switches (AS) for
RCCBs for 5SM3, 100 A, 125 A, 3P+N
Remote-controlled mechanism Leakage current measurement device
45
90
44
70
6189
I201_13657
90
45
I201_12624a
74
736
44
63
90
9
I202_02032
I202_02033
45
90
70
I202_02033
45
90
70
90
9
I202_02032
I201_07861d
45
90
44
64
7
9
9
I201_07862b
45
87
43
60
6
90
45
I201_12624a
74
736
44
63
I201_07843c
7
44
55
72
45
90
N642
N531
PH_04.book Seite 21 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
22 Siemens · 10/2015
Additional components
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Circuit diagrams
Graphic symbols
■
More information
Gossen-Metrawatt offers suitable test devices for RCCB function
tests and for testing protective measures.
Information is available at:
Gossen-Metrawatt GmbH
Thomas-Mann-Str. 16-20
D-90471 Nuremberg
Tel. 0049 (0)/86 02-111
Fax 0049 (0) 9 11/86 02-777
www.gmc-instruments.com
email: info@gmc-instruments.com
Auxiliary switches (AS)
5ST3010
5ST3013
5ST3010-2
5ST3011
5ST3014
5ST3011-2
5ST3012
5ST3015
5ST3012-2
Auxiliary switches (AS) for
RCCBs for 5SM3 up to 80 A Auxiliary switches (AS) for
RCCBs for 5SM3, 100 A, 125 A, 3P+N
1NO + 1NC 2 NC 2 NO 1NO + 1NC
Fault signal contacts (FC)
5ST3020
5ST3020-2 5ST3021
5ST3021-2 5ST3022
5ST3022-2
Shunt trips (ST) Undervoltage releases (UR) Remote controlled mechanisms (RC)
5ST3030
5ST3031 5ST3040
5ST3041
5ST3042
5ST3043
5ST3044
5ST3045
Leakage current
measurement device
22
14
13
21
24
14
13
23
22
12
11
21
21 13
22 14
21 11
22 12
23 13
24 14
23 11
24 12
22
14
13
21
24
14
13
23
22
12
11
21
C2
C1
<
24
23
14
13
U
D1
D2
v
U
D1
D2
ON OFF
321NP
I201_10741a
M
P, N: Supply voltage
1: Return conductor
2: ON command
3: OFF command
153 N
≥ 1 MΩ/V
246N
I201_07078a
V
PH_04.book Seite 22 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
23
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SM2 RC units
■
Overview
RC units are used in all supply systems up to 240/415 V AC.
Devices of type AC trip in the event of sinusoidal AC residual
currents, type A also trips in the event of pulsating DC residual
currents.
In addition, RC units, type F also detect residual currents with
mixed frequencies up to 1 kHz.
RCCBs with a rated residual current of maximum 30 mA are
used for personnel, material and fire protection, as well as for
protection against direct contact.
Devices with a rated residual current of maximum 300 mA are
used as preventative fire protection in case of insulation faults.
RC units are combined with miniature circuit breakers with A, B,
C and D characteristics, provided that these are available in the
MCB range. The two components are simply plugged together
without the need for any tools.
They then form a combination of RCCB and miniature circuit
breakers for personnel, fire and line protection.
The dimensioning of the rated residual current depends on the
size of the plant.
■
Benefits
• Our wide variety of RC unit types and comprehensive range of
miniature circuit breakers offer a huge spectrum of combina-
tions for all applications
• Instantaneous type A devices have a surge current withstand
capability with current waveform 8/20 μs of more than 1 kA,
super resistant of more than 3 kA and selective of more than
5 kA. This ensures safe operation
• All additional components for miniature circuit breakers can
be retrofitted on the right-hand side
• All 100 A and 125 A RC units offer external remote tripping
over terminals Y1/Y2. This supports implementation of central
OFF circuits
• Both components can be simply plugged into each other and
secured with captive metal brackets – no tools required. This
saves considerable time when mounting
PH_04.book Seite 23 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
24 Siemens · 10/2015
5SM2 RC units
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Technical specifications
5SM2
Standards IEC/EN 61009-1 (VDE 0664-20), IEC/EN 61009-2-1 (VDE 0664-21),
IEC/EN 61543 (VDE 0664-30), IEC/EN 62423 (VDE 0664-40)
Surge current withstand capability
• Type A with current
waveform 8/20 µs • Acc. to EN 60060-2
(VDE 0432-2)
- Instantaneous kA > 1
- Super resistant kA > 3
-Selective kA > 5
• Type F with current
waveform 8/20 µs Acc. to EN 60060-2
(VDE 0432-2) kA > 3
Minimum operational voltage for test function operation V AC 195
Rated voltage U
n
V AC 230 ... 400
Rated frequency f
n
Hz 50 ... 60
Rated currents I
n
A0.3 ... 16; 0.3 ... 40; 0.3 ... 63; 80 ... 100
Rated residual currents I
Δn
mA 10, 30, 100, 300, 500, 1000
Insulation coordination
• Overvoltage category III
Pollution degree 2
Terminal conductor cross-sections
•Up to I
n
= 63 A mm
2
1.5 ... 25
•At I
n
= 80 ... 100 A mm
2
6.0 ... 50
Terminal tightening torque Nm 2.5 ... 3.0
Mains connection Either top or bottom
Mounting position (on a standard mounting rail) Any
Degree of protection Acc. to EN 60529 (VDE 0470-1) IP20, if the distribution board is installed, with connected conductors
Touch protection Acc. to EN 50274 (VDE 0660-514) Finger and back-of-hand safe
Service life Average number of switching cycles > 10000 switching cycles
Storage temperature °C -40 ... +75
Ambient temperature °C -25 ... +45,
marked with
Resistance to climate Acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
CFC and silicone-free Yes
-25
Power losses per conducting path under rated current load Number of
poles
Rated current Rated residual
current I
Δn
[A]
Power losses per
conducting path P
v
[W]
216 0.01 2.5
2/3/4 40 0.03 3.6
63 0.03 4.6
40 0.3/0.5/1 1.9
63 0.1/0.3/0.5/1 3.0
2/4 80 0.3 4.8
80 0.3/1 4.0
100 0.3 6.0
100 0.3/1 5.0
PH_04.book Seite 24 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
25
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SM2 RC units
■
Dimensional drawings
■
Circuit diagrams
Graphic symbols
RC units for 5SY
RC units for 5SP4
RC units for 5SY
2P 3P 4P
RC units for 5SP4
2P 4P
I201_08434a
2468
54 44
45
90
64
6,3
10
124
246
54
106,5
36
71
T
63
45
90
44
64
7
I201_06671b
Y2
Y1
4/32/1
180
90
45
90
44
64
7
I201_06672
4/32/1
180
T
Y2
Y1
8/76/5
2P 3P 4P
I201_13640b 2/1 4/3
1 3(N)
24
I201_13641b 2/1 4/3 6/5
153
264
I201_13642b 2/1 4/3 6/5 8/7
1 5 7(N)3
2684
2P 4P
I201_13643b 2/1 4/3
1 3(N)
24
Y2Y1
I201_13644b 2/1 4/3 6/5 8/7
1 5 7(N)3
2684
Y1 Y2
PH_04.book Seite 25 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
26 Siemens · 10/2015
5SU1 RCBOs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Overview
RCBOs are a combination of an RCCB and a miniature circuit
breaker in a compact design for personnel, fire and line protec-
tion. For personnel protection and fire protection, the residual
current part of the type AC trips in the event of sinusoidal
AC residual currents, type A also trips in the event of pulsa-
ting DC residual currents.
In addition, RCBOs type F also detect residual currents with
mixed frequencies up to 1 kHz.
RCBOs with a rated residual current of maximum 30 mA are
used for personnel, material and fire protection, as well as for
protection against direct contact. RCBOs with a rated residual
current of 10 mA are primarily used in areas that represent an
increased risk for personnel and in the outdoor installations of
residential buildings.
Devices with a rated residual current of maximum 300 mA are
used as preventative fire protection in case of insulation faults.
The MCB part of the RCBO protects lines against overload and
short circuits and is available in characteristics B and C.
Since DIN VDE 0100-410 came into effect in June 2007, all
socket outlet current circuits up to 20 A must now also be fitted
with residual current protective devices with a rated residual
current of max. 30 mA. This also applies to outdoor electrical
circuits up to 32 A for the connection of portable equipment.
In order to implement this protection, we recommend the
national use of RCBOs with 30 mA.
Assignment to each individual branch circuit helps prevent the
undesired tripping of fault-free circuits induced by the accumu-
lation of operation-related leakage currents or by transient cur-
rent pulses during switching operations.
Additional components of the 5SY miniature circuit breakers can
be mounted at the side and carry out additional functions.
For further details on additional components, see Catalog LV 10,
chapter "Miniature Circuit Breakers".
RCBOs comprise one part for fault-current detection and one
part for overcurrent detection. They are equipped with a delayed
overload/time-dependent thermal release (thermal bimetal) for
low overcurrents and with an instantaneous electromagnetic
release for higher overload and short-circuit currents.
The special contact materials used guarantee a long service life
and offer a high degree of protection against contact welding.
■
Benefits
For all versions
• Clear and visible conductor connection in front of the rear
busbar facilitates controls
• Large and easily accessible wiring space enables easy
insertion of conductor in the terminals
• The surge current withstand capability of over 1 kA ensures
safe and reliable operation
• All additional components for miniature circuit breakers can
be retrofitted on the right-hand side.
For all 10 kA versions up to 40 A
• Integrated movable terminal covers located at the cable en-
tries ensure the terminals are fully insulated when the screws
are tightened. The effective touch protection when grasping
the device considerably exceeds the requirements of BGV A3
• The RCBOs can be quickly and easily removed from the as-
sembly by hand if connections need to be changed. Time-
saving replacement of parts as busbars no longer need to be
freed from adjacent miniature circuit breakers.
For all 125 A versions
• The RCBOs offer external remote tripping over terminals
Y1/Y2. This supports implementation of central OFF circuits.
PH_04.book Seite 26 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
27
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SU1 RCBOs
■
Technical specifications
Up to 40 A 125 A
Standards IEC/EN 61009-1 (VDE 0664-20); IEC/EN 61009-2-1 (VDE 0664-21)
IEC/EN 61543 (VDE 0664-30); IEC/EN 62423 (VDE 0664-40)
Rated voltages U
n
V AC 230 400
Rated frequency f
n
Hz 50 ... 60
Rated currents I
n
A6, 8, 10, 13, 16, 20, 25, 32, 40 125
Rated residual currents I
Δn
mA 10, 30, 100, 300 30, 300, 1000
Rated breaking capacity kA 6 / 10 10
Energy limitation class 3--
Surge current withstand capability, type A
• With current
waveform 8/20 µs Acc. to EN 60060-2
(VDE 0432-2)
- Instantaneous kA > 1
- Super resistant kA > 3 --
-Selective kA > 5
• Type F with current
waveform 8/20 µs kA > 3 --
Minimum voltage for operation of the test equipment V AC 195
Insulation coordination
• Overvoltage category III
Pollution degree 2
Terminal conductor cross-sec-
tions
• Solid and stranded mm
2
0.75 ... 35 6 ... 50
• Finely stranded with end sleeve mm
2
0.75 ... 25 6 ... 35
Terminal tightening torque Nm 2.5 ... 3.0 3.0 ... 3.5
Mains connection Top or bottom
Mounting position (on a standard mounting rail) Any
Degree of protection Acc. to EN 60529
(VDE 0470-1) IP20, if the distribution board is installed, with connected conductors
Touch protection Acc. to EN 50274
(VDE 0660-514) Finger and back-of-hand safe
Service life Average number of switching
cycles > 10000
Storage temperature °C -40 ... +75
Ambient temperature °C -25 ... +45,
marked with
Resistance to climate Acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
CFC and silicone-free Yes
-25
Power losses
Note:
All data under loading with rated current I
n
.
Rated current
I
n
[A]
Rated residual
current I
Δn
[mA]
Power losses per conducting path
P
v
[W]
Characteristic B Characteristic C
610 2.8 2.2
30 ... 300 2.7 1.9
830 ... 300 -- 1.2
10 10 2.4 2.2
30 ... 300 1.8 1.6
13 10 3.5 3.3
30 ... 300 2.4 2.2
16 10 4.7 4.5
30 ... 300 3.0 2.8
20 30 ... 300 3.7 3.3
25 30 ... 300 5.1 5.1
32 30 ... 300 5.7 5.7
40 30 ... 300 7.8 7.8
PH_04.book Seite 27 Montag, 11. Januar 2016 3:03 15
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28 Siemens · 10/2015
5SU1 RCBOs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
PH_04.book Seite 28 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
29
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SU1 RCBOs
■
Characteristic curves
Tripping characteristics according to EN 61009-1 (VDE 0664 Part 20)
Tripping characteristics at ambient temperature 30 °C
In the case of an ambient temperature other than 30 °C, the cur-
rent values of the delayed tripping operation change by approx.
5 % per 10 K temperature difference. They rise in case of tem-
peratures lower than 30 °C and fall in case of temperatures
higher than 30 °C.
If more than one electrical circuit is loaded in a series of MCBs
or RCBOs, the resulting increase in ambient temperature affects
the characteristic curve.
In this case, it is necessary to take into account an additional
correction factor, specific to the rated current of the RCBO.
Breaking capacity
Particular demands are made on the MCB part of the RCBO with
regard to breaking capacity.
The values are standardized and are determined according to
the test conditions of EN 61009-1 (VDE 0664 Part 20).
The most common values are and .
Tripping characteristic B Tripping characteristic C
Line protection mainly in outlet circuits; no proof required regarding
personal safety General line protection, especially advantageous with higher starting
currents (lamps, motors, etc.)
Tripping characteristic Standards Thermal release Electromagnetic release
Test currents: Test currents:
Small Large Tripping time Hold Latest Tripping time
test current test current I
n
≤ 63 A I
n
> 63 A tripping
I
1
I
2
tI
4
I
5
t
BIEC/EN 61009-1 1.13 × I
n
> 1 h > 2 h 3 × I
n
≥ 0.1 s
VDE 0664 Part 20 1.45 × I
n
< 1 h < 2 h 5 × I
n
< 0.1 s
C1.13 × I
n
> 1 h > 2 h 5 × I
n
≥ 0.1 s
1.45 × I
n
< 1 h < 2 h 10 × I
n
< 0.1 s
30
I201_13653
201510865432
1
2
4
10
20
40
2
1
4
10
20
40
6
60
120
1
6
Multiple of rated current
Tripping time
MinutesSeconds
1.5
1.451.13
0.01
0.02
0.04
0.1
0.2
0.4
0.06
0.6
30
I201_13652
201510865432
1
2
4
10
20
40
2
1
4
10
20
40
6
60
120
1
6
Multiple of rated current
Tripping time
MinutesSeconds
1.5
1.451.13
0.01
0.02
0.04
0.1
0.2
0.4
0.06
0.6
Number 1 2 ... 3 4 ... 6 > 7
Correction factor K 1.00 0.90 0.88 0.85
6 000
10 000
PH_04.book Seite 29 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
30 Siemens · 10/2015
5SU1 RCBOs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Let-through I
2
t values
Rated switching capacity 5SU1, 6000 A
Characteristic B Characteristic C
Rated breaking capacity 5SU1, 10000 A
Characteristic B Characteristic B
25/32/40 A
13/16/20 A
10 A
6 A
102
101
100
100101
10-1
10-1
2
2
4
4
6
68 2 4 68 10
2
2468
2
4
6
2
4
6
I201_15512
2
2[kA s]
p [kA]
13/16 A
20/25/32/40 A
8/10 A
6 A
3/4 A
2 A
0,5 A
0,3 A
1 A
1,6 A
100101
10-1
10-2 246
8
246
8246810
2
2468
2
102
101
2
100
10-1
10-2
2
4
6
2
4
6
2
4
6
2
[kA s]
4
6
I201_15513
p [kA]
6 A
25/32/40 A
13/16/20 A
10 A
100101
10-1 2468 2468 10
2
2468
102
101
100
10-1
2
4
6
2
4
6
2
4
6
2
2[kA s]
I201_15514
p [kA]
I201_16016a
10
0
10
1
468 2 468
10
1
10
2
10
3
2
4
6
2
4
6
100/125 A 80 A
PH_04.book Seite 30 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
31
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SU1 RCBOs
Rated breaking capacity 5SU1, 10000 A
Characteristic C
Characteristic D
Characteristic C
2
102
101
2
100
10-1
10-2
2
4
6
2
4
6
2
4
6
2
[kA s]
4
6
100101
10-1
10-2 246
8
246
8246810
2
2468
13/16 A
20/25/32/40 A
8/10 A
6 A
3/4 A
2 A
0,5 A
0,3 A
1 A
1,6 A
I201_15515
p [kA]
I201_15517
100101
468 2 468
101
102
103
2
4
6
2
4
6
100 A
I201_15516
p [kA]
100101
468 2 468
101
102
103
2
4
6
2
4
6
100/125 A
2
2[kA s]
PH_04.book Seite 31 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
32 Siemens · 10/2015
5SU1 RCBOs
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Dimensional drawings
■
Circuit diagrams
Graphic symbols
1P+N,
up to 40 A 2P,
up to 40 A
2P,
125 A 4P,
125 A
45
44
70
7
90
54
36
I201_13650a
45
90
max 67
I201_13649a
7
198 44
70
117
Handle coupler
1P+N,
up to 40 A 2P,
up to 40 A
2P,
125 A 4P,
125 A
17,9
26
4,2
5,2
I201_12121a
Ø4
I201_13645a
2N
1N
I201_13646a
24
13
I201_13647a
24
13
Y2Y1
I201_13648a
2/1 4/3 6/5 8/7(N)
157(N)3Y1 Y2
PH_04.book Seite 32 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
33
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SU1 RCBOs
■
More information
Selectivity of RCBOs/fuses
Distribution systems are usually set up as radial networks. An
overcurrent protection device is required for each reduction of
the conductor cross-section. This produces a series connection
staggered according to rated currents, which should, if possible,
be "selective".
Selectivity means that, in the event of a fault, only the protective
device that is directly next to the fault source in the current path
is tripped. This means that current paths in parallel can maintain
a power flow.
In the case of RCBOs with upstream fuses, the selectivity limit
depends largely on the current limitation and tripping character-
istics of the RCBO and the melting I
2
t value of the fuse.
This produces different selectivity limits for RCBOs with different
characteristics and rated switching capacity.
The following tables provide information on the short-circuit
currents up to which selectivity exists between RCBOs and
upstream fuses according to DIN VDE 0636 Part 21. The
values specified in kA are limit values that were determined
under unfavorable test conditions. Under normal practical
conditions, you can often expect considerably better values,
depending on the upstream fuses.
Limit values of selectivity of RCBOs/fuses in kA
Downstream RCBOs Upstream fuses
I
n
[A] 16 A 20 A 25 A 35 A 50 A 63 A 80 A 100 A 125 A
B characteristic 5SU1.56 60.4 0.7 1.1 2.0 4.1 •••--
10 -- 0.5 0.75 1.4 2.4 3.4 4.2 •--
13 -- 0.45 0.7 1.3 2.0 2.7 3.6 •--
16 -- 0.45 0.7 1.3 2.0 2.7 3.6 •--
20 -- -- 0.7 1.3 2.0 2.7 3.6 •--
25 -- -- -- 1.3 2.0 2.7 3.6 •--
32 -- -- -- -- 2.0 2.7 3.6 •--
40 -- -- -- -- 1.8 2.7 3.6 •--
C characteristic 5SU1.56 60.35 0.55 0.8 1.5 2.8 4.7 • • --
8-- 0.45 0.7 1.4 2.3 3.3 4.2 •--
10 -- 0.45 0.7 1.4 2.3 3.3 4.2 •--
13 -- 0.4 0.6 1.2 2.0 3.0 3.5 •--
16 -- 0.4 0.6 1.2 2.0 3.0 3.5 •--
20 -- -- 0.6 1.2 2.0 3.0 3.5 •--
25 -- -- -- 1.2 2.0 3.0 3.5 •--
32 -- -- -- -- 2.0 2.8 3.5 •--
40 -- -- -- -- 1.8 2.8 3.5 •--
• r ≥ Rated breaking capacity according to EN 61009-1 .
B characteristic 5SU1.54 60.45 0.7 1.1 2.2 5.0 • •
10 -- 0.55 0.8 1.5 2.8 4.6 7.0 • •
13 -- 0.5 0.75 1.4 2.3 3.9 6.0 • •
16 -- 0.5 0.75 1.4 2.3 3.9 6.0 • •
20 -- -- 0.75 1.4 2.3 3.9 6.0 • •
25 -- -- -- 1.2 2.0 3.1 4.5 8.0 •
32 -- -- -- -- 2.0 3.1 4.5 8.0 •
40 -- -- -- -- 1.8 2.8 4.0 7.0 •
C characteristic 5SU1.54 60.4 0.6 0.9 1.7 3.3 6.5 • • •
8-- 0.5 0.8 1.5 2.7 5.0 7.0 • •
10 -- 0.5 0.8 1.5 2.7 5.0 7.0 • •
13 -- 0.5 0.7 1.3 2.3 4.0 5.0 • •
16 -- 0.5 0.7 1.3 2.3 4.0 5.0 • •
20 -- -- 0.6 1.2 2.0 3.2 4.4 8.0 •
25 -- -- -- 1.2 2.0 3.2 4.4 8.0 •
32 -- -- -- -- 1.8 2.8 3.6 7.0 •
40 -- -- -- -- 1.8 2.8 3.6 7.0 •
• r ≥ Rated breaking capacity according to EN 61009-1 .
6 000
10 000
PH_04.book Seite 33 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
34 Siemens · 10/2015
5SM6 AFD units
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Overview
Characteristics
The Siemens portfolio of protective devices has been proving
itself in the field for many years. This range of fuses, miniature
circuit breakers and residual current protective devices has now
been expanded to include AFDDs (arc fault detection devices).
These AFDDs detect arcing faults caused by serial faults or
loose contacts or as a result of insulation faults that enable con-
tact between phase conductors or between phase and protec-
tive conductors. They therefore offer extremely effective protec-
tion against fires started by electrical faults.
Generally speaking, arcing faults in the circuit can result from
damage to cables and other insulations and from contamination.
Insulation faults result, for example, from vibrations, thermal
expansion and contraction, mechanical loads and aging.
A distinction is made between 3 types of arcing faults:
Serial arcing faults
This is caused by breaks in the conductor or when a loose
contact is in the circuit in series with the load. As the current
flow in such cases is always lower than the operational load
current, miniature circuit breakers and residual current protec-
tive devices are unable to detect such faults and initiate tripping.
The AFDD is specially designed to detect the specific charac-
teristics of these arcing faults, and it reliably disconnects the
affected circuit as soon as the limit values are exceeded.
Parallel arcing faults between phase conductor/neutral
conductor or phase conductor/phase conductor
These are caused by electric arcs resulting from damage to the
insulation that permits contact between the two conductors. In
this case, the level of current is determined by the impedances
in the circuit. Depending on the rated current of the overcurrent
protection device (for instance a miniature circuit breaker), this
can be disconnected. However, if the impedance in the circuit is
too high to reach the trip current of the overcurrent protection de-
vice, no tripping takes place. AFDDs disconnect the currents of
arcing faults upwards of 2.5 A, thus providing reliable protection
in the case of such faults.
Parallel arcing faults between phase conductor/protective
conductor
Arcing faults against the protective conductor are reliably de-
tected and shut down by residual current protective devices.
Residual current protective device with rated residual currents
up to max. 300 mA have already been providing effective fire
protection in such cases for many years.
AFDDs also detect these arcing faults and provide adequate
fire protection where no residual current protective device is
implemented.
Preventing undesired tripping operations
Electric arcs and high-frequency signals occur during normal
operation in networks with multiple electrical loads (e.g. electric
motors, light switches, dimmers). The AFDD must not break the
circuit in such cases.
Thanks to the sophisticated detection logic of our AFDDs, they
are able to clearly distinguish between normal operational inter-
ference signals and hazardous arcing faults.
Type of fault
Serial
LOAD
Protection devices
AFDD
LOAD AFDDMCB
New New
New
AFDD
RCD
New
Closing of the safety gap on the IEC market
Parallel
Phase-Protective conductor
LOAD
AFDD
RCBO
Parallel
Phase-Neutral/
Phase-Phase
AFDD
MCB
RCD
RCBO
Arc fault detection
device
Miniature circuit
breaker
Residual current
protective device
Residual current
operated circuit
breaker with over-
current protection
I201_19188
L
N
L
N
L
N
PH_04.book Seite 34 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
35
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SM6 AFD units
Product versions and application
Siemens offers two product versions, which can be used in
various combinations with a range of 1MW/2MW miniature
circuit breakers and/or RCBOs up to max. 16 A rated current.
This simplifies product selection and reduces inventory, while
enabling coverage of every conceivable application. It also
means that our tried and tested protective devices (MCBs,
RCBOs) can be combined with the new functionality provided by
arc fault protection. In particular, the version with RCBOs offers
a protective device that provides comprehensive personnel,
short-circuit, overload and fire protection in a single device.
The version combined with a compact miniature circuit breaker
in 1 MW is a space-saving alternative that is ideal for retrofitting.
Whether auxiliary switch or fault signal contact – the 5SM6 AFDD
units can be combined at random with the versatile range of ad-
ditional components from the familiar portfolio of 5SY miniature
circuit breakers and 5SU1 RCBOs.
This also enables connection to a higher-level I&C system.
The 5SM6 AFDD units can be connected easily and quickly. The
miniature circuit breakers or RCBOs can be mounted quickly
and simply by just snapping them onto the mounting rail without
the need for tools. For a fast and reliable power supply, the
infeed can be implemented via a busbar assembly.
The AFDDs are primarily intended for protection of final circuits
in cases where
• There is an increased risk of fire due to flammable materials
being stored or processed (e.g. wood processing)
• Flammable building materials are in use (e.g. wood paneling)
• Valuable goods need to be protected (e.g. museums)
• There are rooms in which a fire might not be noticed immedi-
ately (e.g. bedrooms, children's bedrooms)
Status displays and self tests
In order to facilitate fault locating in the event of tripping, AFDDs
have a display with 5 LEDs that provide information on the cause
of tripping (serial/parallel arcing faults, overvoltage). The sophis-
ticated detection electronics system also automatically checks
the functionality of the AFDD. If the self-monitoring process
detects a fault, the AFDD switches off and displays the corre-
sponding indication.
Integrated overvoltage protection
Depending on the load distribution in the three-phase current
system, an interruption on the infeed side of the neutral conduc-
tor may cause a shift of the neutral point and thus an increase in
voltage between the phase conductor and the neutral conduc-
tor. This increase in voltage can damage the loads or present a
fire risk due to overloaded components.
In order to ensure all-round protection, the AFDDs are fitted
with an overvoltage release that disconnects when the voltage
between phase conductor and neutral conductor exceeds
275 V, thus isolating downstream loads from the hazardous
line voltage.
■
Technical specifications
Arc fault detection device (5SM6) fault indication
Device functional
Restricted device function (background noise marginal)
Serial or parallel arcing faults detected
Overvoltage (> 275 V)
Self-test failed
No power supply
Standards Future standard – IEC/EN 62606
Versions 2-pole
Rated voltage U
n
V230
Rated current I
n
AUp to 16
Rated frequency Hz 50
Mains connection Bottom
Tripping in the event of overvoltage V> 275
Degree of protection Acc. to EN 60529
(VDE 0470-1) IP20, with connected conductors
Surge current withstand capability
With current waveform 8/20 µs kA 3
Touch protection Acc. to EN 50274
(VDE 0660-514) Finger and back-of-hand safe
Terminal tightening torque Nm 2.0 ... 2.5
Terminal/conductor cross-sections
• Solid and stranded mm
2
0.75 ... 16
• Finely stranded with end sleeve mm
2
0.75 ... 10
Overvoltage category III
Mounting position Any
Service life average number of switching cycles > 10000
Ambient temperature °C -25 ... +40,
marked with
Storage temperature °C -40 ... +75
Resistance to climate Acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
Pollution degree 2
CFC and silicone-free Yes
Power losses W0.6
-25
PH_04.book Seite 35 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
36 Siemens · 10/2015
5SM6 AFD units
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Dimensional drawings
5SM6011-1 5SM6021-1
■
Circuit diagrams
I201_18884
95
17,9
35,3
6,8 68,5
12
8,1
95
17,9
52,5
6,8 68,5
I201_18883
12
8
LOAD
LINE
I202_02434
AFD
LN
LN
PH_04.book Seite 36 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
37
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5SM6 AFD units for PV applications
■
Overview
The Siemens portfolio of protective devices has been proving
itself in the field for many years. This range of fuses, miniature
circuit breakers and residual current protective devices has now
been expanded to include the 5SM6 AFD units. These AFD units
detect arcing faults that may be caused, for example, by serial
faults or loose contacts.
■
Benefits
• Easy to install and retrofit
• Visual and acoustic indication of arcing faults when a fault
is detected
• Resetting of the arcing fault indication
• Developed according to UL 1699B
• Cost savings thanks to easy installation
• Integration into an external safety system for safe system
disconnection
■
Technical specifications
5SM6094-1
Standards IEC 60364-7-712, UL1699B
Category PV AFD Type 1 (UL 1699B)
Rated current I
n
A40
Rated voltage DC V1000
Tripping current for serial arcs A1 … 40
Tripping voltage DC VMin. 100
Supply voltage DC V24
Terminal conductor cross-sections
• String connection mm
2
2.5 to 10
• Supply voltage connection mm
2
2.5
• Signal connection mm
2
2.5
Terminal tightening torque
• String connection Nm Max. 3.5 mm²
• Supply voltage connection Nm Max. 1.5 mm²
• Signal connection Nm Max. 1.5 mm²
Current consumption
•Active mA 120
•Passive mA 60
Operational current (load) alarm relay (125 V AC) A0.3
Operational current (load) alarm relay (30 V DC) A1
Overvoltage category III
Supply voltage connection Bottom
Mounting position Any
Number of poles 1
Degree of protection
• Acc. to EN 60529 (VDE 0470-1) IP20, with connected conductors
• Acc. to EN 50274 (VDE 0660-514) Finger and back-of-hand safe
CFC and silicone-free Yes
Pollution degree 2
Storage temperature °C -40 ... +75
Ambient temperature °C -20 … +50
Resistance to climate Acc. to IEC 60068-2-30 28 cycles (55 °C; 95 % rel. air humidity)
PH_04.book Seite 37 Montag, 11. Januar 2016 3:03 15
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38 Siemens · 10/2015
5SM6 AFD units for PV applications
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Dimensional drawings
5SM6094-1
■
Circuit diagrams
100
110
36
48 npYWYZZ`_W
electronics
INOUT
NO
NC
+24 V DC
0 V
C
11223
npYWYZZ`_X
PH_04.book Seite 38 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5ST busbars for modular installation devices
■
Overview
4-pole 5SM3 RCCBs are bus-mounted either together or in
combination with miniature circuit breakers. RCCBs with an
N conductor connection on the left-hand side facilitate installa-
tion because standard busbars are used, as those used for
bus mounting miniature circuit breakers.
Busbars in 10 mm
2
and 16 mm
2
versions are available.
The extremely flexible 5ST36 busbar system with fixed lengths
also enables installation in any lengths as the busbars can be
overlapped.
No further need for time-consuming tasks, such as cutting,
cutting to length, deburring, cleaning of cut surfaces and
mounting of end caps.
Any free pins on the busbars can be made safe by covering with
touch protection.
If several RCBOs are bus-mounted together, this is implemented
with 2-phase busbars, which are thus used as 1+N busbars.
■
Benefits
• Connection of miniature circuit breakers to 4-pole RCCBs with
N connection right and 3-phase busbar, using busbar spe-
cially designed for this application. No cutting or end caps
required.
• Connection of 1P+N RCBOs with two-phase busbar. No
cutting or end caps required.
• Connection of miniature circuit breakers to 4-pole RCCBs with
N connection left, with 3-phase busbar that can be cut.
No additional items to be stored and busbars that are always
available.
• Bus-mounting of residual current protective devices on
busbar (3-phase +N) that can be cut. A proven and frequently
used application.
PH_04.book Seite 39 Montag, 11. Januar 2016 3:03 15
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40 Siemens · 10/2015
5ST busbars for modular installation devices
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Technical specifications
5ST3, 5ST2
Standards EN 60439-1 (VDE 0660-500): 2005-01
Busbar material SF-Cu F 24
Partition material Plastic Cycoloy 3600
Temperature-resistant above 90 °C
Flame-retardant
Self-extinguishing
Dioxin-free and halogen-free
Rated operational voltage U
e
V AC 400
Rated current I
n
• Cross section 10 mm
2
A63
• Cross section 16 mm
2
A80
Rated impulse withstand voltage U
imp
kV 4
Test pulse voltage (1.2/50) kV 6.2
Rated conditional short-circuit current I
cc
kA 25
Resistance to climate
• Constant atmosphere Acc. to DIN 50015 23/83; 40/92; 55/20
• Humid heat Corresponds to IEC 68-2-30 28 cycles
Insulation coordination Acc. to IEC 60664-1
(VDE 0110-1)
• Overvoltage category III
• Pollution degree 2
Maximum busbar current I
S
per phase
• Infeed at the start of the busbar
- Cross section 10 mm
2
A63
- Cross section 16 mm
2
A80
• Infeed at the center of the busbar
- Cross section 10 mm
2
A100
- Cross section 16 mm
2
A130
Infeed at the start or end of the busbar Infeed along the busbar or midpoint infeed
The sum of the outgoing current per branch (1, 2, 3...n) must not be greater
than the max. busbar current I
S
/phase.
S
I201_13755
S1 S2
321
1
23
I201_13754a
S
PH_04.book Seite 40 Montag, 11. Januar 2016 3:03 15
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41
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
5ST busbars for modular installation devices
■
Dimensional drawings
Note:
Pin spacing in MW
Dimensions of side view in mm (approx.).
Further busbars can also be found in the configuration manual
for miniature circuit breakers.
5ST3624 5ST3608 5ST3638
5ST3770-2
5ST3770-3
5ST3770-4
5ST3770-5
5ST3654 5ST2145
15,2
9,2
I201_13672
L1 L2 L3 L1 L2 L3 L1 L2 L3 L1 L2
111111211 1
1,5
L1 L2
15,2
6,6
I201_13666
1
19
7,3
L1 L2
1
I201_13665
N
N
N
N
N
N
N
N
L3
L2
L3
L2
L1
L1
L1
L1
I201_18187
1
N
N
N
N
N
N
N
N
L3
L2
L3
L2
L1
L1
L1
L1
I201_18188
1,5
1 1 1
1 1 1
11,9
30,2
18,3
30,2
22,1
1
L1 L2 L2L3 L3NNN
I202_01456
11,9
30,2
1 1 11 1 1
18,3
30,2
22,1
1,5
L1 L2 L2L3 L3NNN
I202_01458
I201_13673
L1 L2 L3 L1 L2 L3 L1 L2 L3 L1 L2
111111211 1
19
10,3
1,5
I201_13768
24,5
14
1
PH_04.book Seite 41 Montag, 11. Januar 2016 3:03 15
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42 Siemens · 10/2015
5SM1 and 5SZ9 RCCB socket outlets
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
■
Overview
= Type A for AC and pulsating DC residual currents
■
Dimensional drawings
5SM1920 RCCB protective socket outlet
According to VDE 0664 for mounting on device boxes, equipped
with residual current operated circuit breaker and 2 5
childproof socket outlets.
5SZ92.6 RCCB protective socket outlets,
5SW1200 molded-plastic enclosures
Molded-plastic enclosures, equipped with RCCB and flush-
mounting 5 socket outlets.
Number of poles Rated current I
n
A
Rated residual
currents I
Δn
mA (Type A)
RCCB protective socket outlets
• For mounting onto device box, equipped with RCCB and 2 SCHUKO®
socket outlets 216 10, 30 ✓
• Molded-plastic enclosures, equipped with RCCB and SCHUKO®
socket outlet 216 10 ✓
146
105 43
I201_08414a
171,5
I201_06150
185
95
180
119
81
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Configuration
■
Overview
Protection by means of residual current protective devices
In the case of "automatic disconnection of the power supply" by
means of a residual current protective device, it is essential that
the system components and equipment to be protected are fit-
ted with an appropriately grounded PE conductor. This means
that it is only possible for a person to be subjected to a flow of
current if two faults occur (in addition to an insulation fault, the
interruption of the PE conductor) or in the event of accidental
contact with live parts.
Additional protection
(Protection against direct contact) with I
Δn
≤ 30 mA
Direct contact refers to a situation where a person comes into
direct contact with a part that is live under operating conditions.
If a person directly touches live parts, two series-connected
resistors determine the level of the current flowing – the internal
resistance of the person R
m
and the contact resistance of the
location R
st
.
For a proper assessment of the accident risk, it must be as-
sumed that the contact resistance of the location is virtually zero.
The resistance of the human body depends on the current path
and the contact resistance of the skin. Measurements have
shown, for example, that a current path of hand/hand or
hand/foot has a resistance of approx. 1000 Ω.
Based on this assumption, a touch voltage of 230 V would pro-
duce a dangerous leakage current of 230 mA. The figure "Areas
of impact of alternating current 50/60 Hz on the human body"
shows the current intensity/contact time curves with reference to
the physiological reactions of the human body. The dangerous
values are the current intensity/contact time values in range 4,
as they can trigger ventricular fibrillations, which can cause
death.
It also shows the tripping ranges of the residual current protec-
tive devices with rated residual current of 10 mA and 30 mA. The
max. permissible tripping times according to VDE 0664-10 are
entered here. As can be seen from the tripping curve, residual
current protective devices do not restrict the level of the residual
current, rather they have a protective effect due to the fast dis-
connection of the current, and thus short contact time.
Residual current protective devices with a rated residual current
I
Δn
≤ 10 mA have a tripping characteristic in range 2 below the
let-go current. There are generally no injurious effects or muscle
spasms (see illustration). They are therefore suitable for sensitive
areas, such as bathrooms.
I201_13979a
M
M
10000
1000
100
10
ms
t
t
0,1 1 10 100 1000 mA 10000
1
30 mA
2 3 4
10 mA
1
2
Range :
Usually
not perceptible
Range :
No muscle
spasms
Areas of impact of alternating current 50/60 Hz on the human body
3
4
Range :
Muscle spasms
possible
Range :
Ventricular fibrillations
may occur
: Leakage
current
: Contact
time
L1
N
PE
RA
RSt
L1
N
PE
RA
RSt
L1
N
PE
RA
RSt
I201_06156
Conductors
interchanged
PE conductor
interrupted
and insulation
failure in the
equipment
Damaged
insulation
RCCB
RCCB
RCCB
Examples of accidental direct contact
PH_04.book Seite 43 Montag, 11. Januar 2016 3:03 15
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44 Siemens · 10/2015
Configuration
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Residual current protective devices with a rated residual current
I
Δn
≤ 30 mA meet the conditions for additional protection against
electric shock (see figure):
• From unintentional, direct contact with live parts as for stan-
dard operations (e.g.: failure of the basic insulation, improper
use, ineffectiveness of the basic protection)
• In the case of negligence on the part of the user (e.g. use
of defective devices, inexpert repairs to systems and/or
equipment)
• In the case of contact with faulty live parts (e.g. failure of
leakage protection in the event of interruption of the protective
conductor)
The use of residual current protective devices with rated residual
current of up to 30 mA has proven an effective enhanced protec-
tion in the event of failure of basic protection measures (protec-
tion against direct contact) and/or fault protection measures
(protection against indirect contact), as well as in the case of
negligence on the part of the user when handling electrical
equipment. However, this must not be the sole means of protec-
tion against electric shock. This does not replace the need for
further protective measures as required by DIN VDE 0100-410.
The requirement for "enhanced protection" with residual current
protective devices according to sections 411.3.3 and 415.1 of
DIN VDE 0100-410 does not mean that the application of this
protection is optional. Rather, it means that this enhanced pro-
tection may be required in relation to external influences and in
specific areas in coordination with further protective measures.
In several parts of the standards for Groups 4 and 7 of
DIN VDE 0100, this additional protection is required or
explicitly recommended. The following explains some of
the key requirements.
The general building standard for protection against electric
shock, DIN VDE 0100-410:2007-06 requires the use of residual
current protective devices with rated residual current ≤ 30 mA for
• All socket outlets with a rated current ≤ 20 A if they are
intended for use by non-experts and for general use
• Branch circuits for portable tools and equipment used
outdoors with a rated current ≤ 32 A
Note:
While DIN VDE 0100-410:06-2007 specifies two exceptions to
these requirements, these are not generally applicable to the
majority of applications.
The standard does not specify enhanced protection for socket
outlets that are used solely by electrical engineers and persons
with electrical training (e.g. in electrical workshops) or if it is
ensured that the socket outlet is permanently used solely for
"specific equipment".
The standard DIN VDE 0100-723:2005-06 "Requirements for
special installations or locations – class-rooms with experimental
equipment" stipulates that, for the supply of experimental equip-
ment and their circuits, the TN or TT systems must be fitted with
residual current protective devices, type B, with rated residual
current ≤ 30 mA.
Leakage protection (protection against indirect contact)
Indirect contact refers to the electric contact of persons with an
electrically conductive part which is not normally live under
operating conditions but has become live under fault conditions.
In such cases, it is essential that the power supply is automati-
cally disconnected if a fault means that the level and duration of
the touch voltage could pose a risk.
For this purpose, residual current protective devices with a rated
residual current of over 30 mA are also suitable. The interrupt
conditions must be observed if the protective effect is to be
obtained. Taking into account the grounding resistance and the
rated residual current, the dangerous touch voltage must not
persist for a time sufficient to cause a risk of harmful physiologi-
cal effect in a person.
Fire barrier
DIN VDE 0100-482 requires measures to be taken to prevent
fires in "Locations exposed to fire hazards" that may result
from insulation faults. This stipulates that cables and conductors
in TN and TT systems must be protected by means of residual
current protective devices with a rated residual current of
I
Δn
= 300 mA. This does not include mineral-insulated cables
and busbar systems.
In the case of applications where resistance-related faults may
cause a fire (e.g. ceiling heating with panel heating elements),
the rated residual current must be I
Δn
= 30 mA.
Protection against fires provided by separate residual current
protective devices should not be solely restricted to locations
exposed to fire hazards, but universally implemented.
PH_04.book Seite 44 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Configuration
Use
Residual current protective devices can be used in all three
system types (DIN VDE 0100-410).
In the IT system, tripping is not required for the first fault as this
situation cannot produce any dangerous touch voltages. It is
essential that an insulation monitoring device is fitted so that the
first fault is indicated by an acoustic or visual signal and the fault
can be eliminated as quickly as possible. Tripping is not re-
quested until the 2nd fault. Depending on the grounding situa-
tion, the trip conditions of the TN or TT system must be complied
with. A residual current protective device is also a suitable
circuit-protection device, whereby a separate residual current
protective device is required for each piece of current-using
equipment.
Grounding resistances
When using residual current protective devices in a TT system,
the maximum grounding resistances (as shown in the following
table) must be complied with, depending on the rated residual
current and the max. permissible touch voltage.
Design and method of operation of residual current
protective devices
The design of residual current protective devices is largely
determined by 3 function groups:
1) Summation current transformer for recording fault current
2) Releases to convert the electrical measured quantities into a
mechanical tripping operation
3) Breaker mechanism with contacts
The summation current transformer covers all conductors re-
quired to conduct the current, i.e. also the neutral conductor
where applicable.
In a fault-free system, the magnetizing effects of the conductors
through which current is flowing cancel each other out for the
summation current transformer as, in accordance with Kirch-
hoff's current law, the sum of all currents is zero. There is no
residual magnetic field left that could induce a voltage in the
secondary winding.
However, by contrast, if a residual current is flowing due to an in-
sulation fault, this destroys the equilibrium and a residual mag-
netic field is left in the transformer core. This generates a voltage
in the secondary winding, which then uses the release and the
breaker mechanism to switch off the electrical circuit afflicted by
the insulation fault.
This tripping principle operates independently of the supply
voltage or an auxiliary power supply. This is also a condition for
the high protection level provided by residual current protective
devices according to IEC/EN 61008 (VDE 0664).
Only this way can it be ensured that the full protective action of
the residual current protective device is maintained even in the
event of a system fault, e.g. failure of a phase conductor or an
interruption in the neutral conductor.
Test b ut ton
All residual current protective devices are equipped with a test
button. Simply press this button to test whether the residual
current protective device is ready to run. Pressing the test button
generates an artificial residual current – the residual current
protective device must trip.
We recommend testing the functionality when commissioning
the system and then at regular intervals – approx. every six
months.
Furthermore, it is also essential to ensure compliance with the
test intervals specified in the pertinent rules and regulations
(e.g. accident prevention regulations).
3-pole connection
4-pole residual current protective devices can also be operated
in 3-pole systems. In this case, connection must be at terminals
1, 3 and 5 and 2, 4 and 6.
The function of the test equipment is only ensured if a jumper is
fitted between terminals 3 and N.
Rated residual
current
Max. permissible grounding resistance at a
max. permissible touch voltage of
I
Δn
50 V 25 V
10 mA 5000 Ω2500 Ω
30 mA 1660 Ω830 Ω
100 mA 500 Ω250 Ω
300 mA 166 Ω83 Ω
500 mA 100 Ω50 Ω
1 A 50 Ω25 Ω
L1
L2
L3
N
PEN
NPE
PE
TN-C TN-S
TN system
RCCB RCCB
I201_06153
L2
L3
N
L1
PEPE
L2
L3
N
L1
TT network
RCCB RCCB
I201_06154
L2
L3
L1
PEPE
IT network (conditional)
RCCB RCCB
I201_06155
135
N
6N
24
L1 L2 L3 N
135N
6N
24
L1 L2 L3
I201_07557a
3 x AC 230 V + N
3 x AC 400 V + N
3 x AC 230 V
3 x AC 400 V
PH_04.book Seite 45 Montag, 11. Januar 2016 3:03 15
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46 Siemens · 10/2015
Configuration
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
SIGRES RCCBs for severe ambient conditions
Our SIGRES RCCBs have been developed for use in environ-
ments with increased pollution gas loads, such as
• Indoor swimming pools: chlorine gas atmosphere
• Agriculture: ammoniac
• Construction site distribution boards, chemical industry:
Nitrogen oxide [NO
x
] and sulfur dioxide [SO
2
].
A significant increase in service life is achieved using our
patented active condensation protection.
When using SIGRES RCCBs, the following points must be
observed:
• The infeed must always be from below, at terminals
2/N or 2/4/6/N
• Before carrying out insulation tests on installation systems with
voltages greater than 500 V, the SIGRES RCCB must be
switched off or the cables on the input side (below) must be
disconnected
Short-time delayed tripping, super resistant
æ
Electrical loads that temporarily produce high leakage currents
when they are switched on (e.g. temporary residual currents
flowing through interference-suppression capacitors between
phase conductor and PE) may trip instantaneous residual cur-
rent protective devices if the leakage current exceeds the rated
residual current I
Δn
of the residual current protective device.
Short-time delayed, super resistant residual current protective
devices can be installed for this type of application, where it is
not possible, or only partially possible, to eliminate such inter-
ference sources. These devices have a minimum tripping delay
of 10 ms, i.e. they should not trip for a residual current pulse of
10 ms. This complies with the maximum permissible break times
according to IEC/EN 61008-1 (VDE 0664-10). The devices have
a high surge current withstand capability of 3 kA.
Short-time delayed, super resistant residual current protective
devices have the identification code
æ
.
Selective tripping
î
Residual current protective devices normally have an instanta-
neous tripping operation. This means that a series connection of
this type of residual current protective devices does not provide
selective tripping in the event of a fault. In order to achieve se-
lectivity for a series connection of residual current protective de-
vices, both the tripping time and the rated residual current of se-
ries-connected devices must be time graded. Selective residual
current protective devices have a tripping delay.
Furthermore, selective residual current protective devices must
have an increased surge current withstand capability of at least
3 kA according to IEC/EN 61008-1 (VDE 0664-10). Siemens de-
vices have a surge current withstand capability of ≥5 kA.
Selective residual current circuit breakers have the identification
code
î
.
The table below shows the time grading options available for re-
sidual current protective devices for selective tripping in series
connection with devices without time delay and super resistant
with short-time delay
æ
.
Versions for 50 ... 400 Hz
Due to their principle of operation, the standard versions of
residual current protective devices are designed for maximum
efficiency in 50/60 Hz systems. Product standards and tripping
conditions also refer to this frequency. The sensitivity decreases
with increasing frequency. In order to implement effective
residual current protection for applications in systems up to
400 Hz (e.g. industry), you need to use suitable devices. Such
residual current protective devices fulfill the tripping conditions
up to the specified frequency and provide the appropriate level
of protection.
RCCBs with left-side N connection
The fact that the RCCBs are usually located to the left of the
miniature circuit breakers, but have their N conductor connec-
tion on the right-hand side, interferes with the integrated busbar
connection. For this reason, RCCBs require a special busbar
when used with miniature circuit breakers. In order to enable the
use of standard busbars, four-pole RCCBs are also provided
with their N connection on the left-hand side. This means that
RCCBs can continue to be installed to the left of miniature circuit
breakers using standard busbar connections.
K
K
S
S
100 mA
300 mA
500 mA
1000 mA
50 ...150 ms ≤ 40 ms 20 … 40 ms
RCCB
10 mA or 30 mA
10 mA, 30 mA or 100 mA
10 mA, 30 mA ,100 mA
300 mA
RCCB
RCCB
RCCB
Main
distribution
board
Selective
version
Sub-distribution board
Instantaneous or super resistant
Downstream RCCB
or
Upstream RCCB
for selective
disconnection
Break time
at 5 x ∆n
Break time
at 5 x ∆n
Break time
at 5 x ∆n
Instantaneous
version
Super resistant
version
I201_15510a
PH_04.book Seite 46 Montag, 11. Januar 2016 3:03 15
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Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Configuration
Surge current withstand capability
During thunderstorms, atmospheric overvoltages in the form of
traveling waves can penetrate the installations of a system over
an overhead system and trip the residual current protective
devices.
To prevent such inadvertent tripping operations, residual current
protective devices sensitive to power pulse currents must pass
specific tests to verify the surge current withstand capability.
These tests are carried out using a surge current of the stan-
dardized surge current wave 8/20 μs.
Surge current wave 8/20 μs (front time 8 μs: Time to half-value 20 μs)
Siemens residual current protective devices of types A and B all
have a high surge current withstand capability. The following
table shows the surge current withstand capability of the various
versions:
Breaking capacity, short-circuit strength
In accordance with the installation specifications
DIN VDE 0100-410 (protection against electric shock) residual
current protective devices can be installed in all three system
types (TN, TT and IT systems).
However, if using the neutral conductor as a protective conduc-
tor in TN systems, a fault may cause residual currents similar to
a short-circuit. For this reason, residual current protective devic-
es must be installed together with a back-up fuse and have the
appropriate short-circuit strength. Tests have been defined for
this purpose.
The short-circuit strength of the combination must be specified
on the devices.
Siemens residual current protective devices, together with a
suitable back-up fuse, have a short-circuit strength of 10000 A.
This is the highest possible level of short-circuit strength as
specified in the VDE regulations.
Data for the rated breaking capacity according to
IEC/EN 61008, i.e. the maximum permissible short-circuit
back-up fuses for 5SM3 residual current protective devices are
contained in the following table:
Example:
Short-circuit strength 10 kA with max. permissible short-circuit
series fuse 100 A.
Version Surge current withstand capability
Instantaneous > 1 kA
Short-time delayed,
super resistant æ > 3 kA
Selective î> 5 kA
%
100
90
50
10
0
01T
STr
t
m
I201_06165
Tail
Front
Peak Characteristics of a current
impulse acc. to
DIN VDE 0432 Part 2
Ts Front time in s
Tr Virtual time to half-value
on tail in s
01 Virtual origin
m Peak value
Rated current of the
residual current
protective device
Rated switching
capacity I
m
acc. to
IEC/EN 61008 (VDE
0664) for a grid dis-
tance of 35 mm
Maximum permissible
short-circuit back-up
fuse LV HRC, DIAZED,
NEOZED
Operational class gG for
residual current protec-
tion device
Type AC
Type A
Type F
Type B 125 AC
... 400 V 500 V AC
Type B+
AA A A
16 ... 40 2 MW 500 63 --
63, 80 2.5 MW 800 100 --
100, 125 2 MW 1250 125 --
25, 40 (400 Hz) 4 MW 800 80 --
25 ... 63 4 MW 800 100 63
80 4 MW 800 100 --
100 4 MW 1000 100 --
125 4 MW 1250 125 --
kHz
100 A
10 000
PH_04.book Seite 47 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
48 Siemens · 10/2015
Configuration
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Types of current
Due to the use of electronic components in household
appliances and industrial plants, insulation faults can also
cause residual currents that are not AC residual currents to
flow through residual current protective devices, even in the
case of devices with ground terminals (safety class I).
The regulations for residual current protective devices contain
additional requirements and test regulations for residual currents
whose power supply frequency is zero or virtually zero within a
certain period.
Residual current protective devices that trip for both sinusoidal
AC residual currents and pulsating DC residual currents (type A)
are identified by the mark .
Residual current protective devices that also trip for smooth DC
residual currents (type B) are identified by the mark .
1)
Tripping operations according to IEC/EN 61008-1 (VDE 0664-10);
for smooth DC residual currents defined to IEC 60755 UB1 INT.
Note:
For more information on the subject of
You will find residual current protective devices in the technology
primer "Residual Current Protective Devices",
Article No.: E10003-E38-2B-G0090.
Type of current Current
waveform
Correct function of
residual current protective devices of type
Tripping current
1)
Type AC Type A Type F
Type B
Type B+
AC fault current ✓ ✓ ✓ ✓ ✓ 0.5 ... 1.0 I
Δn
Pulsating DC residual currents
(pos. or neg. half-waves)
-- ✓ ✓ ✓ ✓ 0.35 ... 1.4 I
Δn
Truncated half-wave currents -- ✓ ✓ ✓ ✓ Start angle 90°
0.25 ... 1.4 I
Δn
-- ✓ ✓ ✓ ✓ Start angle 135°
0.11 ... 1.4 I
Δn
Half-wave current during
superimposition with smooth
direct current
--
--
✓
+ 6 mA
✓
+ 10 mA
✓
+0.4 mA
✓
+0.4 I
Δn
Max. 1.4 I I
Δn
+ DC
Residual current from mixed
frequency
-- -- ✓ ✓ ✓ 0.5 ... 1.4 I
Δn
Smooth direct current -- -- -- ✓ ✓ 0.5 ... 2.0 I
Δn
kHz
PH_04.book Seite 48 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
49
Siemens · 10/2015
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
Configuration
■
Application
Note:
For reasons of basic fire protection, we recommend the use of
residual current protective devices with maximum 300 mA rated
residual current.
Standards Application Required I
Δn
Recommended Siemens
residual current protective devices
[mA] Type A Type F SIQUENCE
type B/
type B+
SIGRES
DIN VDE 0100-410 Protection against electric shock 30 ... 500 ✓ ✓ ✓ ✓
Socket outlets up to 20 A, plants outdoors 10 ... 30 ✓ ✓ -- --
DIN VDE 0100-482 Fire protection for particular risks or safety hazards 30, 300 ✓ ✓ ✓ --
DIN VDE 0100-701 Rooms with baths or showers, socket outlets in zone 3 10 ... 30 ✓ ✓ -- --
DIN VDE 0100-702 Basins for swimming pools and other basins 10 ... 30 ✓-- -- ✓
DIN VDE 0100-703 Rooms and cabins with sauna heating 10 ... 30 ✓-- -- ✓
DIN VDE 0100-704
BGI 608
Building sites, socket outlet current circuits up to 32 A and for
handheld equipment, plug-and-socket devices I
n
> 32 A ≤ 30 ✓ ✓ ✓ ✓
≤ 500 ✓ ✓ ✓ ✓
DIN VDE 0100-705 Agricultural and general horticultural premises, socket outlet
circuits ≤ 500 ✓ ✓ -- ✓
≤ 30 ✓ ✓ -- ✓
DIN VDE 0100-706 Conductive areas with limited freedom of movement,
permanently attached resources 10 ... 30 ✓-- -- --
DIN VDE 0100-708 Electrical installations on camping sites, fixed feeding points for
every socket outlet and every final circuit 10 ... 30 ✓-- -- ✓
DIN VDE 0100-710 Medical premises in TN-S system, depending on application group
1 or 2 and equipment 10 ... 30 ✓-- ✓--
≤ 300 ✓-- ✓--
DIN VDE 0100-712 Solar PV power supply systems (without simple separation) ≤ 300 -- -- ✓--
DIN VDE 0100-723 Classrooms with experimental equipment 10 ... 30 -- -- ✓--
DIN VDE 0100-739 Additional protection against direct contact in homes 10 ... 30 ✓-- -- --
EN 50178
(VDE 0160)
Fitting of power installations with electronic equipment General requirements
for correct selection
when using res. current
protection
✓ ✓ ✓ --
EN 50293
(VDE 0832-100)
Traffic signal systems
•Class T1
•Class U1 ≤ 300
≤ 30
✓
✓
--
-- --
--
✓
✓
Food processing and chemical industry ≤30 (recommended) ✓-- -- ✓
PH_04.book Seite 49 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
50 Siemens · 10/2015
Notes
Residual Current Protective Devices / Arc Fault Detection Devices (AFDDs)
PH_04.book Seite 50 Montag, 11. Januar 2016 3:03 15
© Siemens AG 2016
© Siemens AG 2016
–
The information provided in this brochure contains merely general
descriptions or characteristics of performance which in case of actual
use do not always apply as described or which may change as a result
of further development of the products. An obligation to provide the
respective characteristics shall only exist if expressly agreed in the
terms of contract. Availability and technical specifications are subject
to change without notice.
All product designations may be trademarks or product names of
Siemens AG or supplier companies whose use by third parties for their
own purposes could violate the rights of the owners.
Siemens AG
Energy Management
Low Voltage & Products
Postfach 10 09 53
93009 REGENSBURG
GERMANY
Subject to change without prior notice
PDF (3ZW1012-5SM33-0AC1)
PH 0216 En
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© Siemens AG 2016
