Siemens SIRIUS 3RU2 - Ground-fault protection (3 RB31 only)

Technical data
11.4 3RB30/3RB31 solid-state overload relays
SIRIUS Innovations - SIRIUS 3RU2 thermal overload relays / SIRIUS 3RB3 solid-state overload relays
Manual, 09/2014, A5E03656507420A/RS-AA/002
129
Type
3RB301.,
3RB311.
3RB302.,
3RB312.
Size
S00
S0
Width
45 mm
45 mm
Ground-fault protection (3RB31 only)
The information refers to sinusoidal fault currents at 50/60 Hz
• Tripping value I
Δ
> 0.75 x I
motor
• Operating range I
Lower current setting < I
motor
< 3.5 x upper current setting
• Response time t
trip
(in steady-state
condition)
s < 1
Current consumption of the integrated electrical
remote RESET (3RB31 only)
Connection terminals
A3, A4
24 V DC, max. 200 mA for approx. 20 ms, thereafter < 10 mA
Protective separation between auxiliary
current paths
acc. to IEC/EN 60947-1
V 300
CSA and UL rated data
Auxiliary circuit – Switching capacity
3RB30: B600, R300;
3RB31: B300, R300