Siemens SENTRON 3VA1216-5MH32-0BA0 — 160 A MCCB with undervoltage release
Breaking capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V, 30 kA at 440 V, and 17 kA at 690 V. At 415 V, the 121 kA rating still covers most industrial transformer-fed busways. The thermal-magnetic TM120M release gives you a fixed thermal pickup at 160 A and a magnetic trip that responds to short-circuit currents. No electronic adjustability here — set it and forget it. If you need adjustable long-time or short-time delays, you'd be looking at the electronic trip variants in the 3VA family. An undervoltage release (UVR) is integrated as standard — the auxiliary trip module is order code 3VA9608-0BB11. No auxiliary contacts are fitted from the factory, so if you need status feedback to a PLC, you'll add them separately.
Above that, it 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.
Footprint: 105 mm wide, 158 mm tall, 70 mm deep. No special adapter brackets needed for most Siemens panelboards.
Motor switching capability
Rated operating power at AC-3 duty (400 V) is 55 W. That's not a motor-starting rating — it's the switching power for the auxiliary circuit. The breaker itself is a feeder protection device, not a motor starter. For motor branch circuits, pair it with a contactor and overload relay upstream or downstream as the coordination study dictates.