The Siemens SENTRON 3VA1116-5EE32-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for continuous 160 A at 40 °C, with a massive 187 kA interrupting capacity at 240 V AC — that's the headline number for fault-current duty on a low-voltage distribution board. At 415 V it still breaks 121 kA, and at 440 V it holds 75.6 kA, so it handles high-fault scenarios common in industrial mains without cascading upstream.
Line protection and auxiliary fit
Designed for line protection — meaning it sits on the feeder, not a motor circuit. The unit ships with an undervoltage release (UVR) pre-installed, so it drops out on a sag below the release threshold. Auxiliary switching comes as 2 auxiliary switches plus 1 trip alarm switch HQ, enough for status feedback to a PLC or remote I/O. Rated insulation voltage is 800 V, and the operating temperature span runs from -25 °C to +70 °C, with storage down to -40 °C. The 40.5 W max power loss at full load matters for enclosure thermal budgeting — factor it into your panel heat calculation.
Panel integration
Mounts on a standard DIN rail. Footprint is 70 mm deep, 76.2 mm wide, 130 mm tall — three poles in a 76.2 mm width is a compact fit for a 160 A MCCB. The 70 mm depth stays inside a 200 mm enclosure depth, leaving room for cables and busbars behind the door.