Specifications are subject to change without notice (30.09.2005) 1
Rated opera- Non-rep. Control Rated operational current
tional voltage voltage voltage 25A 50A 75A 100A
230VACrms 650Vp3 - 32VDC RM1A23D25 RM1A23D50 RM1A23D75 RM1A23D100
20 to 280VAC RM1A23A25 RM1A23A50 RM1A23A75 RM1A23A100
22 to 48VDC
400VACrms 850Vp4 - 32VDC RM1A40D25 RM1A40D50 RM1A40D75 RM1A40D100
20 to 280VAC RM1A40A25 RM1A40A50 RM1A40A75 RM1A40A100
22 to 48VDC
480VACrms 1200Vp4 - 32VDC RM1A48D25 RM1A48D50 RM1A48D75 RM1A48D100
20 to 280 VAC RM1A48A25 RM1A48A50 RM1A48A75 RM1A48A100
22 to 48VDC
600VACrms 1400Vp4 - 32VDC RM1A60D25 RM1A60D50 RM1A60D75 RM1A60D100
20 to 280VAC RM1A60A25 RM1A60A50 RM1A60A75 RM1A60A100
22 to 48VDC
• Zero switching (RM1A) or instant-on
switching (RM1B) AC Solid State Relay
• Direct copper bonding (DCB) technology
• LED indication
• Built-in varistor 230, 400, 480, 600V
• Clip-on IP 20 protection cover
• Self-lifting terminals
• Housing free of moulding mass
• 2 input ranges: 3-32* VDC and 20-280V AC/22-48VDC
• Operational ratings: Up to 100AACrms and 600VACrms
• Non-repetitive voltage: Up to 1400Vp
• Opto-insulation: > 4000VACrms
Product Description
The industrial, 1-phase relay
with antiparallel thyristor out-
put is the most widely used
industrial SSR due to its mul-
tiple application possibilities.
The relay can be used for
resistive, inductive and
capacitive loads. The zero
switching relay switches ON
when the sinusoidal curve
crosses zero and switches
OFF when the current cross-
es zero. The instant-on relay
Solid State Relay
Number of poles
Switching mode
Rated operational voltage
Control voltage
Rated operational current
Ordering Key
Solid State Relays
with DC control input can be
used for phase control. The
built-in varistor secures tran-
sient protection for the heavy
industrial applications, and
the LED indicates the status
of the control input. The clip-
on cover is securing touch
protection to IP 20. Protect-
ed output terminals can han-
dle cables up to 16mm2.
Type Selection
Switching mode Rated operational Control voltage Rated operational
voltage current
A: Zero Switching 23: 230VACrms A: 20-280VAC/22-48VDC 25: 25AACrms
B: Instant-on switching 40: 400VACrms D: 3-32VDC* 50: 50AACrms
(DC Control only) 48: 480VACrms *4 to 32VDC for 400, 480 and 600VAC types 75: 75AACrms
60: 600VACrms *4 to 32VDC for RM1B types 100: 100AACrms
Selection Guide
Industrial, 1-Phase ZS (IO) w. LED and Built-in Varistor
Types RM 23, RM 40, RM 48, RM 60
RM 1 A 23 D 25
2Specifications are subject to change without notice (30.09.2005)
Input Specifications
RM1A, RM1B
Output Specifications
RM1....25 RM....50 RM1....75 RM1....100
Rated operational current
AC51 @ Ta=25°C 25Arms 50Arms 75Arms 100Arms
AC53a @ Ta=25°C 5Arms 15Arms 20Arms 30Arms
Min. operational current 150mA 150mA 150mA 150mA
Rep. overload current t=1 s < 55AACrms < 125AACrms < 150AACrms < 200AACrms
Non-rep. surge current t=10 ms 300Ap580Ap1150Ap1900Ap
Off-state leakage current @
rated voltage and frequency < 3mArms < 3mArms < 3mArms < 3mArms
I2t for fusing t=1-10 ms < 450 A2s < 1680A2s < 6600A2s < 18000A2s
Critical dI/dt ≥50A/µs ≥50A/µs ≥100A/µs ≥100A/µs
On-state voltage drop @ rated current 1.6Vrms 1.6Vrms 1.6Vrms 1.6Vrms
Critical dV/dt off-state min. 1000V/µs 1000V/µs 1000V/µs 1000V/µs
General Specifications
RM1...D.. RM1...A..
Control voltage range
RM1A23... 3 - 32VDC 20 - 280VAC, 22 - 48VDC
RM1A40... RM1A48... RM1A60... 4 - 32VDC 20 - 280VAC, 22 - 48VDC
RM1B... 4 - 32VDC -
Pick-up voltage @ Ta = 25˚C
RM1A23... 2.5VDC 18VAC/DC
RM1A40... RM1A48... RM1A60... 3.5VDC 18VAC/DC
RM1B ... 3.5VDC -
Reverse voltage 32VDC -
Drop out voltage 1.2VDC 6VAC/DC
Input current @ max input voltage
RM1A ≤12 mA ≤20mA
RM1B ≤15 mA -
Response time pick-up
RM1A ≤1/2 cycle ≤12ms
RM1B ≤0.1ms -
Response time drop-out ≤1/2 cycle ≤40ms
RM1.23... RM1.40... RM1.48... RM1.60...
Operational voltage range
RM1A... 24 to 265VACrms 42 to 440VACrms 42 to 530VACrms 42 to 660VACrms
RM1B... 42 to 265VACrms 42 to 440VACrms 42 to 530VACrms 42 to 660VACrms
Non-rep. peak voltage ≥650Vp≥850Vp≥1200Vp≥1400Vp
Zero voltage turn-on ≤10V ≤10V ≤10V ≤10V
Operational frequency range 45 to 65Hz 45 to 65Hz 45 to 65Hz 45 to 65Hz
Power factor
> 0.5 @ 230VACrms > 0.5 @ 400VACrms > 0.5 @ 480VACrms > 0.5 @ 600VACrms
Approvals UL, cUL, CSA UL, cUL, CSA UL, cUL, CSA UL, cUL, CSA
CE-marking Yes Yes Yes Yes *
* Heatsink must be connected to ground
Specifications are subject to change without notice (30.09.2005) 3
All dimensions in mm
Thermal Specifications
RM1....25 RM1....50 RM1....75 RM1....100
Operating temperature -20° to 70°C -20° to 70°C -20° to 70°C -20° to 70°C
Storage temperature -40° to 100°C -40° to 100°C -40° to 100°C -40° to 100°C
Junction temperature ≤125°C ≤125°C ≤125°C ≤125°C
Rth junction to case ≤0.80K/W ≤0.50K/W ≤0.35K/W ≤0.30K/W
Rth junction to ambient ≤20K/W ≤20K/W ≤20K/W ≤20K/W
Weight
25A, 50A Approx. 60g
75A, 100A Approx. 100g
Housing material Noryl GFN 1, black
Baseplate
25A, 50A Aluminium
75A, 100A Copper, nickel-plated
Potting compound None
Housing Specifications
Functional Diagram
A1( )
A2( )
T1
L1
ZCIO
REGULATION
+
~
~
-
Dimensions
APPLY
HEATSINK
COMPOUND
LED
Relay
Mounting screws M5
Mounting torque 1.5-2.0Nm
Control terminal
Mounting screws M3 x 9
Mounting torque 0.5Nm
Power terminal
Mounting screws M5 x 9
Mounting torque 2.4Nm
Housing Specifications (Cont.)
RM1A,RM1B
Carlo Gavazzi Heatsink Thermal ...for power
(see Accessories) resistance... dissipation
No heatsink required --- N/A
RHS 300 5.00K/W > 0W
RHS 100 3.00K/W > 25W
RHS 45C 2.70K/W > 60W
RHS 45B 2.00K/W > 60W
RHS 90A 1.35K/W > 60W
RHS 45A plus fan 1.25K/W > 0W
RHS 45B plus fan 1.20K/W > 0W
RHS 112A 1.10K/W > 100W
RHS 301 0.80K/W > 70W
RHS 90A plus fan 0.45K/W > 0W
RHS 112A plus fan 0.40K/W > 0W
RHS 301 plus fan 0.25K/W > 0W
Consult your distribution > 0.25K/W N/A
Infinite heatsink - No solution
--- N/A
Heatsink Selection
Rated insulation voltage ≥4000VACrms
Input to output
Rated insulation voltage ≥4000VACrms
Output to case
Insulation
4Specifications are subject to change without notice (30.09.2005)
Heatsink Dimensions (load current versus ambient temperature)
RM....25
2.70 2.34 1.98 1.61 1.25 0.89
3.10 2.69 2.28 1.86 1.45 1.04
3.61 3.13 2.65 2.18 1.70 1.23
4.26 3.70 3.14 2.59 2.03 1.47
5.14 4.47 3.80 3.14 2.47 1.80
6.38 5.56 4.73 3.91 3.09 2.27
8.25 7.19 6.14 5.08 4.02 2.97
11.4 9.94 8.49 7.04 5.59 4.14
17.7 15.4 13.2 11.0 8.74 6.51
- - - - 18.2 13.6
25.0
22.5
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
Load
current [A] Thermal resistance
[K/W]
TA
Ambient temp. [°C]
Power
dissipation [W]
28
24
21
18
15
12
9
7
4
2
20 30 40 50 60 70
RM....50
1.03 0.86 0.70 0.53 0.37 0.20
1.27 1.09 0.90 0.71 0.52 0.33
1.54 1.32 1.10 0.89 0.67 0.45
1.85 1.59 1.34 1.08 0.82 0.57
2.26 1.95 1.65 1.34 1.03 0.72
2.85 2.47 2.08 1.70 1.32 0.94
3.73 3.24 2.75 2.26 1.77 1.27
5.22 4.54 3.86 3.19 2.51 1.83
8.21 7.16 6.11 5.05 4.00 2.95
17.2 15.0 12.9 10.7 8.51 6.33
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
Load
current [A] Thermal resistance
[K/W]
TA
Ambient temp. [°C]
Power
dissipation [W]
61
53
46
39
33
26
20
15
10
5
20 30 40 50 60 70
RM....75 RM....100
Junction to ambient thermal resistance, Rth j-a < 20.0 K/W
Junction to case thermal resistance, Rth j-c < 0.80 K/W
Case to heatsink thermal resistance, Rth c-s < 0.20 K/W
Maximum allowable case temperature 100 deg.C
Maximum allowable junction temperature 125 deg.C
Junction to ambient thermal resistance, Rth j-a < 20.0 K/W
Junction to case thermal resistance, Rth j-c < 0.50 K/W
Case to heatsink thermal resistance, Rth c-s < 0.20 K/W
Maximum allowable case temperature 100 deg.C
Maximum allowable junction temperature 125 deg.C
Junction to ambient thermal resistance, Rth j-a < 20.0 K/W
Junction to case thermal resistance, Rth j-c < 0.35 K/W
Case to heatsink thermal resistance, Rth c-s < 0.10 K/W
Maximum allowable heatsink temperature 100 deg.C
Maximum allowable junction temperature 125 deg.C
Junction to ambient thermal resistance, Rth j-a < 20.0 K/W
Junction to case thermal resistance, Rth j-c < 0.30 K/W
Case to heatsink thermal resistance, Rth c-s < 0.10 K/W
Maximum allowable heatsink temperature 100 deg.C
Maximum allowable junction temperature 125 deg.C
0.91 0.78 0.65 0.52 0.39 0.26
1.10 0.96 0.81 0.66 0.51 0.36
1.34 1.17 1.00 0.83 0.66 0.49
1.60 1.40 1.20 1.00 0.80 0.60
1.93 1.68 1.44 1.20 0.96 0.72
2.38 2.08 1.78 1.49 1.19 0.89
3.06 2.68 2.30 1.91 1.53 1.15
4.21 3.68 3.16 2.63 2.10 1.58
6.51 5.70 4.88 4.07 3.26 2.44
13.5 11.77 10.09 8.41 6.73 5.04
75.0
67.5
60.0
52.5
45.0
37.5
30.0
22.5
15.0
7.5
Thermal resistance
[K/W]
Load
current [A] Power
dissipation [W]
TA
Ambient temp. [°C]
77
68
59
50
42
34
26
19
12
6
20 30 40 50 60 70
0.54 0.45 0.36 0.27 0.18 0.09
0.68 0.58 0.47 0.37 0.27 0.17
0.86 0.74 0.62 0.50 0.38 0.26
1.08 0.94 0.80 0.66 0.52 0.38
1.37 1.20 1.03 0.85 0.68 0.51
1.70 1.49 1.28 1.06 0.85 0.64
2.21 1.93 1.66 1.38 1.10 0.83
3.06 2.68 2.30 1.91 1.53 1.15
4.78 4.18 3.59 2.99 2.39 1.79
9.98 8.73 7.49 6.24 4.99 3.74
Thermal resistance
[K/W]
Load
current [A] Power
dissipation [W]
TA
Ambient temp. [°C]
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
111
97
84
71
59
47
36
26
17
8
20 30 40 50 60 70
RM1A, RM1B
Specifications are subject to change without notice (30.09.2005) 5
RM1A, RM1B
FASTON terminals
Fork Terminals
All accessories can be ordered pre-assembled with Solid State Relays.
Other accessories include DIN rail adaptors, fuses, varistors and spacers.
For futher information refer to Accessories datasheets.
•Faston tabs
•Tab dimensions accord-
ing to DIN 46342 part 1
•Pure tin-plated brass
•Terminal adaptors
for 35mm2cable
•Type RM635FK
• Pack size: 20 pieces
RS, RM Solid State Relay
Faston terminals
Tab orientation
Input Tab width: 4.8mm
Output Tab width: 6.3mm
Ordering Key
Ordering Key
Screw mounted
Faston terminals
RM1A48D25 F 4
*
Other Accessories
•Heatsinks and fans
•Type RHS....
•0.25 to 5.00 k/W
•Single and dual
relay types
•Touch safety cover
•Type RMIP20
•IP20 protection degree
•Pack size: 20 pieces
RS, RM Solid State Relay
Tab orientation
** 48: 4.8mm faston for input
63: 6.3mm faston for output
Faston terminals
in packs of 20
RM48 F4
*
**
0: Flat (0º)
4: Angled (45º)
*
RM terminal adaptor
Touch protected (optional)
RM635FK P
