160 A MCCB with 330 kA interrupting rating — selectivity at the main
The Siemens SENTRON 3VA2116-7HM32-0AA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current across its full ambient range of -25 °C to 70 °C, with no derating needed up to 70 °C. Its interrupting capacity hits 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — numbers that matter when you're coordinating a main breaker with downstream feeders in a high-fault industrial panel.
Ground-fault monitoring and line protection design
This breaker is configured for line protection (not feeder or motor protection) and includes a ground-fault monitoring version that uses summation current formation on the L-conductor — meaning it sums the phase currents internally to detect residual current without an external core-balance CT. That integration saves a DIN-rail slot and simplifies wiring in a main lug panel. The unit has no undervoltage release, no communication module, and no trip indicator, so it's a straight-line main breaker: wire it, torque it, forget it.
The 86 mm depth leaves room for rear bus connections in a typical 600 mm deep enclosure.
Maximum power loss is 25.5 W at rated current. That's low enough to avoid forced ventilation in most indoor switchboards, but if you're packing multiple breakers in a sealed enclosure, derate per the manufacturer's grouping factor.