It carries a continuous current rating of 50 A at 40 °C, with minimal thermal derating up to 70 °C (45 A at 70 °C). That makes it a fast mover for standard 50 A feeder circuits in commercial and light industrial switchboards. Three poles, 800 V rated insulation voltage, and interrupting ratings that step from 121 kA at 240 V down to 11.9 kA at 690 V. The 121 kA at 240 V covers high-fault service-entrance positions on 240/120 V split-phase or 208Y/120 V systems; the 75.6 kA at 415 V handles most 400 V-class industrial distribution.
Built-in trip unit and auxiliary hardware
The shunt trip lets a remote PLC or emergency-stop circuit force the breaker open — typical for safety interlocks on conveyor feeders or pump panels. No undervoltage release is installed on this variant. The breaker is 76.2 mm wide, 130 mm tall, 70 mm deep, so it fits a standard 3-pole MCCB footprint on a DIN rail or panel-mount base.