The Siemens SENTRON 3VM1116-3GE42-0AA0 is a 4-pole molded case circuit breaker rated for line protection, carrying a TM220 thermal-magnetic overcurrent release and a maximum current of 1 600 A with a minimum of 1 A. Breaking capacity runs 76 kA at 240 V, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V — so at typical 400 V distribution levels you have solid fault-clearing headroom for most industrial feeders.
Rated continuous current holds at 160 A from 40 °C through 50 °C, then steps down to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. IP40 on the front keeps dust out of the mechanism without a sealed enclosure.
Maximum power loss is 38 W at full load — relevant for thermal calculations in a sealed MCC bucket. The 100% N-conductor protection design means the neutral pole is fully rated, not reduced, which matters for harmonic-rich loads or four-wire feeders where neutral current can approach phase current.