This MCCB delivers 121 kA interrupting capacity at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V — figures that cover most low-voltage distribution fault levels.
Rated 160 A continuously at 40 °C, the breaker holds that rating through 50 °C, then derates to 156 A at 55 °C, 151 A at 60 °C, 147 A at 65 °C, and 142 A at 70 °C.
Physical fit and mounting
Dimensions are 105 mm wide, 158 mm high, 70 mm deep — a standard 3-pole MCCB footprint for Siemens SENTRON 3VA frames. Mounts via screw terminals to a backplate or DIN-rail adapter; the 70 mm depth leaves clearance for rear-connected busbars in a typical 600 mm deep enclosure.