That kind of headroom means it can clear a bolted fault downstream without the upstream breaker having to trip, so selectivity stays intact. A built-in shunt trip release (STL) lets a remote signal — fire alarm, emergency-stop relay, or a PLC output — force the breaker open without anyone pulling the handle. The part is designed for panel mounting; its 105 mm width and 86 mm depth fit standard MCCB cutouts, and the 181 mm height leaves room for cable entry below the line lugs.
This breaker's interrupting rating drops as system voltage rises: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. If your panel feeds a 480 V motor control center, the 75.6 kA figure at 500 V is the one to compare against your available fault current — not the headline 187 kA.
Environmental tolerance and panel integration
Power loss is 4 W maximum — negligible for thermal budget inside a packed panel.