Toshiba GR200 Series Instruction Manual page 473

6F2S1914 (0.49)
The 'CB1-BRIDGE' signal is used to combine any 'per-phase trip signal' into the three-
phase trip signal in the TRC function. Thus, the CB will be tripped in three-phases forcibly
even if a GEN.TRIP-A (TRIP COMMAND-A) signal is only generated in the TRC function
during the 'ARC1 UNREADY' being decided (as well as GEN.TRIP-B or GEN.TRIP-C).
GRL200 (Soft 033 & 037)
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