3RU11, 3RB10, and 3RB12 overload relays
SIRIUS System Manual
GWA 4NEB 430 0999-02b
4-47
4.7.3 3RB12 electronic overload relays
Ty p e 3RB12 46 3RB12 53 3RB12 57 3RB12 62
Width 70 mm 120 mm 145 mm 230 mm
General specifications
Tripped at
Overload, phase loss, phase imbalance (>40% in acc. with NEMA),
ground fault, and operation of thermistor motor protection
1
)
Tripping class
In acc. with IEC 60 947-4-1 CLASS 5, 10, 15, 20, 25, and 30; adjustable by means of a 6-way rotary
switch
Phase loss sensitivity
Ye s
Overload warning
Yes, as of 1.5 x
I
e
given a symmetric load, and as of 0.85 x
I
e
given an
asymmetric load
Resetting and recovery
Resetting options after tripping Manual, remote, and automatic resetting
1
)
Recovery time With automatic reset min When tripped by overcurrent: 5 (stored permanently)
When tripped by thermistor: time until the motor temperature 5K
sinks under the operating temperature
When tripped by ground fault: no automatic reset
With manual reset min When tripped by overcurrent: 5 (stored permanently)
When tripped by thermistor: time until the motor temperature 5K
sinks under the operating temperature
When tripped by ground fault: immediate
With remote reset min When tripped by overcurrent: 5 (stored permanently)
When tripped by thermistor: time until the motor temperature 5K
sinks under the operating temperature
When tripped by ground fault: immediate
Configuration
Indication of operating status on device Yes, with 3 LEDs; green "Ready" LED, red "Overload" LED, and red
"Ground fault" LED
2
)
Test function Yes, with combined TEST/RESET button
2
)
Reset button Yes, with combined TEST/RESET button
2
)
Stop button Yes, with combined TEST/RESET button
2
)
For the safe operation of motors with
increased safety protection
EC special test certificate number in
compliance with directive 94/9/EC
PTB 01 ATEX 3220
Ambient temperatures
Storage/transportation °C -40 to +80
Operation °C -25 to +70
Temperature compensation °C Up to 70
Permissible rated current at Internal cubicle temperature of 60 °C % 100 (current reduction is not required at above +60 °C)
Internal cubicle temperature of 70 °C % 100 (current reduction is not required at above +60 °C)
Repetition terminals
Terminal for contactor coil Not required
Auxiliary switch repetition terminal Not required
Degree of protection
In acc. with IEC 60 529/DIN VDE 0470
Part 1
IP 20 (
≤
100 A max. set current
I
e
IP 00 (
≤
100 A max. set current
I
e
Shock protection
In acc. with DIN VDE 0106 Part 100 Protected
against finger
touch
Protected against finger touch with cover
Sinus shock resistance
In acc. with IEC 68 Part 2-27
g
/ms 15/11
EMC noise immunity
Conducted
disturbance neutralization - burst
In acc. with IEC 61 000-4-4:
(corresponds to severity grade 3)
kV 2
Conducted
disturbance neutralization - surge
In acc. with IEC 61 000-4-5:
(corresponds to severity grade 3)
kV 2
Electrostatic discharge In acc. with IEC 61 000-4-2:
(corresponds to severity grade 3)
kV 8
Field-related disturbance neutralization In acc. with IEC 61 000-4-3:
(corresponds to severity grade 3)
V/m 10
EMC emitted interference
Limit value class B in acc. with EN 55 011
Resistance to extreme climates
(atmospheric humidity)
%100
Dimensions
See dimensioned drawings
Site altitude
m Up to 2000 above sea level
Construction type/mounting
Stand-alone
installation
3
)
Direct mounting/stand-alone installation without addi-
tional terminal bracket
4
)
1) Tripped at ground fault only in the case of devices with the order number suffi-
xes 20 and 30 or in conjunction with the external summation current transformer
3) Snap-on attachment to 35 mm rail or screw-on attachment with
accessories
2) For a detailed explanation, see "Description". 4) For screw-on attachment
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