User Manual

SIRIUS 3RU2/3RB3 overload relays
5.10 Technical data
SIRIUS Innovations
546 System Manual, 01/2011, A8E56203870002-03
5.10.3 3RB30/3RB31
5.10.3.1 General technical data
Table 5- 43 General technical data for 3RB30/3RB31 overload relays
Type 3RB30 1., 3RB31 1. 3RB30 2., 3RB31 2.
Size S00 S0
Width 45 mm 45 mm
Tripping in the event of Overload, phase failure, and phase asymmetry +
ground fault (3RB31 only)
Tripping class acc. to
IEC/EN 60947-4-1
CLASS 3RB30: 10 / 20,
3RB31: Select from 5, 10, 20, and 30
Phase loss sensitivity Yes
Overload warning No
Resetting and recovery
 Reset options following tripping
Manual, automatic, and remote RESET (depending on the version)
 Recovery time
- Automatic RESET min approx. 3 min
- Manual RESET min Immediately
- Remote RESET min Immediately
Equipment
 Display of operating state on device
Yes, via switch position indicator slide
 TEST function
Yes, electronics can be tested by pressing the TEST button/
auxiliary contacts and wiring of control circuit are tested by
moving the switch position indicator slide/
self-monitoring
 RESET button
Yes
 STOP button
No
Explosion protection – safe operation of motors with
"increased safety" explosion protection type
 EC type examination certificate number
conforming to Directive 94/9/EC (ATEX)
PTB 09 ATEX 3001 II (2) GD
Ambient temperatures
 Storage/transport
°C -40 ... +80
 Operation
°C -25 ... +60
 Temperature compensation
°C +60
 Permissible rated current
- At internal cabinet
temperature 60 °C
% 100 100
1)
- 70 °C % On request