MCCB with TM240 release and undervoltage release — line protection variant
The Siemens 3VA1116-4EF36-0DA0 is a 3-pole SENTRON molded case circuit breaker rated for 160 A continuous current with a TM240 thermal-magnetic overcurrent release. It carries 121 kA breaking capacity at 240 V, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — numbers that tell you this breaker handles high-fault utility feeds or transformer secondaries without cascading upstream. The TM240 release is fixed-trip; no interchangeable rating plugs. An undervoltage release (UVR) is fitted as standard, so if your safety circuit drops control voltage the breaker opens — common on emergency-stop chains or mains disconnect schemes where loss of control power must kill the line.
Current derating and thermal management
Full 160 A rating holds through 50 °C ambient — no derating needed in most ventilated enclosures. At 55 °C it drops to 153.6 A, at 60 °C to 150.4 A, at 65 °C to 147.2 A, and at 70 °C to 144 A. If your panel runs hot near the top of a sealed gland plate, size your load below the 55 °C column. Operating range is -25 °C to 70 °C; storage from -40 °C to 80 °C. IP40 on the front means tools or fingers won't reach live parts, but the breaker is not sealed against washdown — keep it inside a rated enclosure.
Physical fit and panel integration
Footprint is 130 mm high, 76.2 mm wide (roughly 3 inches — standard MCCB width for 160 A frame), 70 mm deep. No auxiliary contacts fitted; no communication module. The UVR coil is the 3VA9608-0BB25 — verify coil voltage against your control circuit before wiring. The breaker accepts screw terminals; torque values per the device manual. It mounts on a DIN rail or directly to a backplate via the four mounting slots. For a 160 A feed, plan for cable lugs sized to the terminal pad — typically M8 or M10 studs depending on the lug kit.
Comparison with 3VA1010-2ED32-0JA0
The 3VA1010-2ED32-0JA0 is a smaller-frame 100 A MCCB from the same SENTRON family. The 3VA1116-4EF36-0DA0 steps up to 160 A continuous and adds the undervoltage release as a factory-fit option. Both use the TM thermal-magnetic release, but the 160 A frame has higher interrupting ratings across the voltage range. If your panel was laid out for the 100 A frame, the 160 A unit is physically wider and deeper — check the mounting footprint before assuming a drop-in swap.