Line protection MCCB with high interrupting capacity
The Siemens SENTRON 3VA1116-5EF36-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection duty, carrying a continuous current of 160 A through the TM240 thermal-magnetic release. The 187 kA breaking capacity at 240 V and 121 kA at 415 V mean this breaker clears high-fault currents without cascading upstream — critical for main feeders or high-capacity distribution panels where the available fault current is substantial. At 690 V the interrupting rating drops to 17 kA, so verify the system voltage against the curve before specifying.
The 160 A rating holds flat from 40 °C through 50 °C ambient. Above that the derating curve steps down: 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. Operating range spans -25 °C to 70 °C; storage extends from -40 °C to 80 °C.
Auxiliary contacts and shunt trip
The auxiliary release is a shunt trip (STL) — order code 3VA9688-0BL33 for the integrated auxiliary trip module if remote tripping is needed.