Line protection MCCB with 160 A continuous rating and 121 kA interrupt capacity
The Siemens SENTRON 3VA1116-4EF36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 160 A continuous current (Iu) with a TM240 thermal-magnetic overcurrent release. At 240 V it interrupts faults up to 121 kA. Current rating holds at 160 A up to 50 °C ambient; above that it derates 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. If the panel runs hot — say a packed enclosure near a furnace line — the 55 °C figure is the one to budget for. Mechanical endurance is rated at 15 000 operations. That's typical for a distribution MCCB — not a switching-duty contactor, but fine for infrequent isolation and fault protection.
Undervoltage release and auxiliary contacts
This variant ships with an undervoltage release (UVR) built in — the design is listed as undervoltage release (UVR), so it trips the breaker when control voltage drops below a threshold. That's a common requirement for safety circuits and emergency-stop chains where you want the breaker to drop out on loss of control power. It also carries 2 auxiliary switches (HQ type) for status feedback to a PLC or panel lamp. No communication function, no phase failure detection, no ground fault monitoring, and no voltage trigger are fitted on this order code. If you need those, you're looking at a different 3VA variant with the electronic trip unit or the communication module.
Physical fit and panel integration
Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep. Mounts on a DIN rail or direct panel-mount via the SENTRON base. The integrated auxiliary trip is order code 3VA9608-0BB25 — that's the factory-fitted internal accessory for shunt or UVR wiring. If you're replacing this breaker in an existing panel, verify the auxiliary wiring matches your control scheme before pulling the old one.