Siemens 3VA1112-5EE32-0AA0 SENTRON MCCB, 125 A, 3-Pole, TM22

The Siemens 3VA1112-5EE32-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a 125 A continuous rating at 40 °C through 50 °C, then derates to 114 A at 70 °C — the thermal curve matters if your panel runs hot or you're pushing the bus near its limit. Breaking capacity is 187 kA at 240 V AC, dropping to 121 kA at 415 V and 75.6 kA at 440 V — still well above typical fault levels for most commercial and industrial services. At 500 V and 690 V it holds at 17 kA, which is adequate for motor branch circuits with proper coordination. The TM220 overcurrent release combines a thermal-magnetic trip with fixed settings — no adjustment dials, which simplifies specification but means you select the exact amp rating at ordering. No undervoltage release, no shunt trip, no communication module on this variant; it's a straight thermal-magnetic breaker for standard feeder protection. Front IP40 rating means it's protected against tools and small wires entering the front face, but not against water ingress — mount inside a panel, not in a washdown zone. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep; it fits a standard 3-pole MCCB footprint on DIN rail or panel-mount.