Rated 40 A continuously at 40 °C, it holds that full rating up to 50 °C before derating begins (39 A at 55 °C, 38 A at 65 °C, 37 A at 70 °C). The 3-pole frame handles three-phase circuits up to 800 V insulation class. Breaking capacity is the key fit parameter here: 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That covers high-fault industrial panels where a standard MCB would weld closed.
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON distribution boards and most DIN-rail enclosures. Maximum power loss is 13.3 W — account for that in sealed enclosures.