Specifications are subject to change without notice (12.10.06) 1
Monitoring Relays
Product Description Ordering Key
Housing
Function
Type
Item number
Output
Power supply
TRMS AC/DC over or under voltage
monitoring relays
Selection of measuring range by DIP-switches
Adjustable voltage on relative scale
Adjustable hysteresis on relative scale
Adjustable delay function (0.1 to 30 s)
Programmable latching or inhibit at set level
Output: 8 A SPDT relay N.D. or N.E. selectable
For mounting on DIN-rail in accordance with
DIN/EN 50 022 (DUB03) or plug-in module (PUB03)
22.5 mm Euronorm housing (DUB03)
or 36 mm plug-in module (PUB03)
LED indication for relay, alarm and power supply ON
Input (voltage level)
DUB03 Terminals A1, A2
PUB03 Terminals 2, 10
Measures on own power
supply
Measuring ranges
Direct Level
Selectable by DIP-switch
24 VAC/DC 10 to 26 V 50 to 110%
48 VAC/DC 10 to 53 V 20 to 110%
115 VAC/DC 12 to 127 V 10 to 110%
240 VAC/DC 24 to 264 V 10 to 110%
The input voltage cannot
raise over 300 VAC/DC
with respect to ground
(PUB03 only)
1-Phase True RMS AC/DC Over or Under Voltage
Types DUB03, PUB03
Input Specifications
DUB 03 C W24
DUB03 and PUB03 are pre-
cise TRMS AC/DC over or
under voltage (selectable by
DIP-switch) monitoring
relays.
Owing to the built-in latch
function, the ON-position of
the relay output can be
maintained. Inhibit function
can be used to avoid relay
operation when not desired
(maintenance, transitions).
The LED's indicate the state
of the alarm and the output
relay.
DUB03 PUB03
Output SPDT relay
Rated insulation voltage 250 VAC
Contact ratings (AgSnO2)µ
Resistive loads AC 1 8A@250 VAC
DC 12 5 A @ 24 VDC
Small inductive loads AC 15 2.5 A @ 250 VAC
DC 13 2.5 A @ 24 VDC
Mechanical life 30 x 106operations
Electrical life 105operations
(at 8 A, 250 V, cos ϕ=1)
Operating frequency 7200 operations/h
Dielectric strength
Dielectric voltage
2kVAC (rms)
Rated impulse withstand volt. 4kV (1.2/50 µs)
Output Specifications
Type Selection
Mounting Output Frequency Supply: 12 to 240V AC/DC
DIN-rail SPDT 50 - 400 Hz DUB 03 C W24
Plug-in SPDT 50 - 400 Hz PUB 03 C W24
Power supply Overvoltage cat. III
Rated operational voltage (IEC 60664, IEC 60038)
through terminals:
A1 and A2 (DUB03) or 12 to 240 V AC/DC
2and 10 (PUB03) +10% -15%; 45 to 440 Hz
Dielectric voltage None
Rated operational power 4 VA(AC)
1.5W (DC)
Supply Specifications
2Specifications are subject to change without notice (12.10.06)
DUB03, PUB03
Mode of Operation
DUB03 and PUB03 monitor
both AC and DC over or
under voltage.
Example 1
(latch function disabled, ND
relay)
The relay operates when the
measured value exceeds (or
drops below) the set level for
more than the set delay time.
It releases when the voltage
drops below (or exceeds) the
set level (see hysteresis set-
ting), or when power supply is
interrupted.
Note
If the voltage drops below the
minimum power supply volt-
age and the relay is set for
undervoltage the output con-
tact isn’t necessarily ON.
Example 2
(latch function enabled, NE
relay)
The relay operates and latch-
es in operating position when
the measured value exceeds
(or drops below) the set level
for morethan the set delay
time.
The relay releases when
power supply is interrupted.
The red LED flashes until the
delay time has expired or the
measured value has dropped
below the set point (see hys-
teresis setting).
Power ON delay 1 s ± 0.5 s or 6 s ± 0.5 s
Reaction time (input signal variation from
-20% to +20% or from
+20% to -20% of set value)
Alarm ON delay < 100 ms
Alarm OFF delay < 100 ms
Accuracy (15 min warm-up time)
Temperature drift ± 1000 ppm/°C
Delay ON alarm ± 10% on set value ± 50 ms
Repeatability ± 0.5% on full-scale
Indication for
Power supply ON LED, green
Alarm ON LED, red (flashing 2 Hz
during delay time)
Output relay ON LED, yellow
Environment
Degree of protection IP 20
Pollution degree 3 (DUB03), 2 (PUB03)
Operating temperature -20 to 60°C, R.H. < 95%
Storage temperature -30 to 80°C, R.H. < 95%
General Specifications
Housing
Dimensions DUB03 22.5 x 80 x 99.5 mm
PUB03 36 x 80 x 94 mm
Weight Approx. 150 g
Screw terminals
Tightening torque Max. 0.5 Nm
acc. to IEC 60947
CE Marking Yes
EMC
Electromagnetic Compatibillity
Immunity According to EN 61000-6-2
Emission According to EN 61000-6-3
Adjust the input range set-
ting the DIP switches 1 and
2 as shown below.
Select the desired function
setting the DIP switches 3 to
6as shown below.
To access the DIP switches
open the grey plastic cover
as shown below.
Selection of level and time
delay:
Upper knob:
Setting of hysteresis on rela-
tive scale: 0 to 30% on set
value.
Centre knob:
Voltage level setting on rela-
tive scale: 10 to 110% on
full scale.
Lower knob:
Setting of delay on alarm
time on absolute scale (0.1
to 30 s).
Function/Range/Level and Time Delay Setting
Relay working mode
ON: Normally De-Energized
OFF: Normally Energized
Measuring range
ON OFF 24 V
OFF OFF 48 V
ON ON 115 V
OFF ON 240 V
Power ON delay
ON: 6 s ± 0.5 s
OFF: 1 s ±0.5 s
Contact input
ON: Latching
OFF: Not latching
Monitoring function
ON: Over voltage
OFF: Under voltage
Specifications are subject to change without notice (12.10.06) 3
DUB03, PUB03
L
N(-)
m
A1
A2 15
16 18
U
12-240V
AC/DC(+)
L
N(-)
m
10 1
43
U
2
12 - 240V
AC/DC(+)
Wiring Diagrams
DUB03 PUB03
Operation Diagrams
Over voltage - N.D. relay
Under voltage - N.D. relay
Power supply
Set level
Relay ON
Hysteresis
Red LED ON
Power supply
Set level
Relay ON
Hysteresis
Red LED ON
Over voltage - N.E. relay
Under voltage - N.E. relay
Power supply
Set level
Relay ON
Hysteresis
Red LED ON
Power supply
Set level
Relay ON
Hysteresis
Red LED ON
22.5
80
83.5
99.5
63
28.5
36
80
94
28.5
63
90
Dimensions
DIN-rail Plug-in