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Can you get remote indication for ERMS maintenance mode

Published date: 10 May 2019

Can you get remote indication for ERMS mode being active?

Product Line:
Circuit breakers

Powerpact and Masterpact breakers

There are two ways to get remote indication that the trip unit is set to ERMS mode.
  1. Connect IO module output 3 (O3) to a relay instead of directly to the light on the lighted switch.  
    Use one relay contact to illuminate the switch light per drawing.  Use a second contact for remote signaling.  See attached for switch ratings.
  2. Monitor register 808 at address 0x0327 with the BMS system.
    Bit 0 = 0: ERMS mode OFF
    Bit 0 = 1: ERMS mode ON
    See attached.

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