MCCB for line protection — 160 A continuous, 4-pole, TM220 release
The Siemens SENTRON 3VA1116-5GE42-0AA0 is a 4-pole molded case circuit breaker rated for 160 A continuous at 40 °C, with a TM220 thermal-magnetic overcurrent release. Short-circuit breaking capacity is specified per voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. These figures confirm the breaker can handle high fault currents at low voltages while maintaining adequate interrupting capacity at higher distribution voltages — a key selectivity consideration for downstream coordination studies.
Panel integration and mounting
The breaker occupies a 101.6 mm width, 130 mm height, and 70 mm depth — a standard footprint for 160 A frame MCCBs. It mounts on a DIN rail or directly to a backplate via screw terminals. The 4-pole configuration (3 phases + neutral) suits three-phase four-wire distribution where the neutral requires overcurrent protection. Verify the TM220 release curve matches your load profile: thermal-magnetic is general-purpose for cable and busbar protection, not motor-start duty.