It carries 20 A at 40 °C ambient across three poles, with a breaking capacity of 52.5 kA at 240 V — enough to handle high-fault industrial feeds without cascading upstream. At 415 V the rating drops to 32 kA; at 690 V it holds at 7.5 kA, reflecting the voltage-dependent arc extinction limits typical of MCCBs.
Rated current holds at 20 A from 40 °C up to 55 °C, then derates to 19 A at 60–70 °C. That flat thermal curve means it can sit in a warm panel without losing headroom — useful for enclosures near motors or ovens. Maximum power loss is 12 W per pole — a useful figure for thermal management in a multi-breaker enclosure.
Built-in accessories and panel integration
The shunt trip allows remote tripping from a PLC or emergency-stop circuit; the auxiliary switches report breaker status back to the control system. Dimensions are 76.2 mm wide, 70 mm deep, 130 mm tall — a 3-pole footprint that fits standard Siemens SENTRON mounting and bus-bar systems.