MCCB for line protection with undervoltage release
The Siemens SENTRON 3VA1116-3EF36-0DA0 is a 3-pole molded case circuit breaker rated 160 A continuous at 40 °C, designed for line protection in distribution panels. It carries a TM240 thermal-magnetic release and an integrated undervoltage release (UVR) that trips the breaker when supply voltage drops below a set threshold — useful for preventing motor re-acceleration after a dip. Interrupting capacity is 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, covering most industrial fault-current scenarios. The breaker is rated for an insulation voltage of 800 V. Current rating holds at 160 A from 40 °C through 50 °C, then derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. Maximum power loss is 40.5 W.
Panel fit and environmental limits
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that drops into most DIN-rail or panel-mount assemblies without re-drilling. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.