The Siemens SENTRON 3VA1116-5EF32-0CH0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 160 A, configured for line protection with a TM240 thermal-magnetic overcurrent release and an integrated undervoltage release (UVR). Its interrupting capacity is specified per voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — these are the values that govern fault-clearing capability at the installed system voltage. The thermal derating curve is documented from 40 °C through 70 °C: the breaker carries the full 160 A up to 50 °C, then steps down to 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C. Panel ambient temperature determines the actual continuous rating.
The auxiliary contact configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ type). The integrated auxiliary trip is order code 3VA9608-0BB24. The undervoltage release is present as standard.
Dimensions: 70 mm depth, 76.2 mm width, 130 mm height. The 76.2 mm width corresponds to a 4-module DIN-rail footprint (18 mm per module), which governs spacing in the distribution board. Front IP40 rating means the breaker face is protected against tools and wires >1 mm, but the enclosure itself must provide the overall panel IP rating. Rated insulation voltage Ui is 800 V, so the breaker is suitable for 690 V line-to-line systems with adequate clearance. The TM240 release is a thermal-magnetic type — no electronic adjustment, no communication function, no phase-failure detection. This is a straightforward line-protection device for fixed-trip applications.
Mechanical endurance is rated at 15,000 operations. Storage temperature range is -40 °C to 80 °C; operating ambient is -25 °C to 70 °C. The trip indicator is present. No ground-fault monitoring version is fitted.