SENTRON 3VM1116-4EE42-0AA0 — 160 A MCCB with TM220 Release
The Siemens 3VM1116-4EE42-0AA0 is a SENTRON molded case circuit breaker rated for line protection, carrying a continuous current of 160 A up to 50 °C before the thermal curve begins to bite — at 55 °C it's still good for 158 A, and it holds 150 A all the way to 70 °C. That's a shallow derate slope, meaning you can pack it into a warm panel without losing much headroom. Four poles, TM220 thermal-magnetic release with an adjustable li of 1600 A for the magnetic trip. The 121 kA breaking capacity at 240 V AC is the headline number, but the real-world value is the 76 kA at 415 V — that covers most European industrial distribution without an upstream current-limiting fuse. Rated insulation voltage Ui of 690 V, max DC operational voltage of 500 V. Front IP40 means it's fine inside a clean enclosure; no ground-fault monitoring, no communication module, no neutral conductor protection built in — this is a straight feeder breaker, not a multifunction device.
Sizing and Thermal Reality Check
The 160 A rating holds flat from 40 °C to 50 °C — that's the sweet spot for most panel ambient conditions. At 55 °C you lose 2 A; at 70 °C you're at 150 A. If your panel runs hot from transformer or drive heat, the 3VM1116 still delivers 93% of its nameplate at the top of the operating range (-25 °C to 70 °C). Dimensions are 101.6 mm wide by 130 mm tall by 70 mm deep — a 4-pole MCCB that fits standard DIN-rail or screw-mount patterns. The 38 W maximum power loss at rated load is heat that stays in the enclosure; factor it into your thermal budget if you're stacking multiple breakers in a row.
Lifecycle and Sourcing
Listed as current production — no end-of-life notice on this order code. The 3VM1116-4EE42-0AA0 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.