160 A MCCB with 75.6 kA interrupting — line protection, UVR included
The Siemens 3VA1116-3EF32-0CA0 is a SENTRON 3-pole molded case circuit breaker rated for 160 A continuous at 40 °C, with a breaking capacity of 75.6 kA at 240 V AC. The 160 A rating holds steady across 40 °C to 50 °C ambient, then derates to 158 A at 55 °C and 150 A at 70 °C. That's enough headroom for most panel environments without having to oversize the frame. The TM240 overcurrent release handles the thermal-magnetic trip curve. This is a fixed thermal-magnetic unit, not electronic, so no adjustments or communication module — set it, torque it, move on.
Interrupting rating drops as voltage climbs: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V.