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3RV1 Circuit Breaker/MSP
SIRIUS System Manual
GWA 4NEB 430 0999-02 DS 01
2-9
Locking the circuit
breaker/MSPs
You can prevent the circuit breaker/MSP from being switched on by unau-
thorized persons by securing the switching mechanism (toggle switch or
rotary switch) with a padlock (shackle diameter 3.5 to 4.5 mm)
The device can only be locked in the Off position.
Fig. 2-5: Locking the toggle and rotary switch (example: frame size S00 and S0)
Resetting after a tripping operation
When the circuit breaker/MSP trips, the switch goes into the tripped position.
You use the switch to close the circuit again.
In the case of frame sizes S0 to S3, the rotary switch must be manually
turned to the OFF position after the device trips. Then the circuit breaker/
MSP can be turned on again.
In the case of frame sizes S2 and S3, it is possible to switch on and off using
a motorized remote-control mechanism (see Section 2.4, Accessories).
Testing overload
tripping
The following table shows you how overload tripping of the circuit breaker/
MSP can be tested:
Ø 3.5... 4.5 mm
RV-00251
S00
S0
Drawing Step Procedure
1
Switch the toggle switch/rotary
switch from 0 to 1.
2/3
Put a screwdriver in the test
opening and push it to the left.
Overload tripping is in working
order when the toggle switch
switches from 1 to 0 (frame
size S00) or goes into the
tripped position (frame sizes S0
to S3).
Table 2-3: Testing overload tripping (example: frame size S00)
1
2
RV -00223