The Siemens SENTRON 3VM1132-4ED12-0AA0 is a 1-pole molded case circuit breaker (MCCB) rated for line protection, with a TM210 thermal-magnetic overcurrent release. It carries a 32 A continuous rating at 40 °C and holds that rating through 50 °C — at 55 °C it derates to 31 A, and at 70 °C to 30 A, so in a warm panel you lose only a couple amps. Breaking capacity is 76 kA at 240 V AC and 9 kA at 415 V AC, which covers most industrial service-entrance and feeder applications on the lower voltage side; at 415 V the 9 kA figure is adequate for downstream distribution but not for high-fault utility tie points.
Mounting and fit
Width is 25.4 mm (1 inch) — a single 1-pole module that snaps onto standard DIN rail. Depth of 70 mm and height of 130 mm mean it fits in shallow enclosures where a full-frame MCCB might not. The front face carries IP40 protection; no trip indicator or undervoltage release on this variant, so if you need visual flag or UVR you step to a different option code within the 3VM family.