It is a 3-pole unit rated 20 A continuous at 40 °C, with a thermal derating curve that holds 20 A up to 55 °C and drops to 19 A at 60 °C and above — meaning in a warm enclosure you lose 1 A of headroom above 55 °C, a detail that matters for a panel builder sizing the breaker to a continuous load. The headline breaking capacity is 220 kA at 240 VAC, stepping down to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. Maximum power loss is 14.5 W per pole — a panel designer working on a multi-breaker lineup should sum these losses when calculating enclosure ventilation.
Width is 76.2 mm (3 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). That 76.2 mm width is a standard 3-module MCCB footprint — it occupies three 25.4 mm positions on a DIN rail or panel-mount plate.
What the auxiliary release and switches add
The two HQ auxiliary switches provide status feedback (open/closed) to a PLC or indication lamp. No communication function is built in, so remote monitoring requires an external I/O module reading the aux contacts.