Ratings that matter for coordination
The interrupting ratings cascade: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The steep drop at 690 V tells you this breaker is meant for 400 V-class systems — at 690 V the SCCR is only 3.7 kA, so if your panel feeds a 690 V motor drive, you need a different frame or a current-limiting upstream device.
The breaker includes two auxiliary switches (HQ type) and the undervoltage release, so no separate add-on modules are needed for remote status or undervoltage protection. Maximum power loss is 12.5 W, which is manageable for a 100 A frame but worth accounting for in a sealed, high-ambient cabinet.
