Functions
5.6 Additional functions
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
58 Manual, 09/2016, A5E03656507420A/RS-AB/003
Test function for the 3RB20 / 3RB21 and 3RB30 / 3RB31 electronic overload relay
The correct function of the relay when ready for operation can be checked by pressing the
TEST button with the motor current flowing (device/electronics test). Current sensing, the
motor model, and the tripping unit are tested.
The switch position indicator slide can be used to test the auxiliary contacts and the control
current wiring. The tripping of the relay can be simulated by moving the slide, thereby
providing a means of checking that the auxiliary circuit has been wired correctly.
Can be found in the Chapter ...
RESET after release (Page 117).
About the test function TEST function (Page 120).
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