The Siemens 3VM1132-4ED32-0AA0 is a SENTRON molded case circuit breaker (MCCB) with 3 poles, rated for 32 A continuous current (Iu) and fitted with a TM210 thermal-magnetic overcurrent release. Its interrupting capacity reaches 121 kA at 240 V AC, 76 kA at 415 V AC, 53 kA at 440 V AC, and 11.9 kA at 500 V AC — figures that cover most industrial fault-current scenarios up to those voltage levels. The TM210 release has an adjustable long-time pickup (lg) from 32 A to 320 A, so you set the overload threshold to the actual load, not the breaker's nameplate.
What the interrupting ratings mean for your panel
The interrupting ratings — 121 kA at 240 V, 76 kA at 415 V, 53 kA at 440 V, 11.9 kA at 500 V — tell you the maximum fault current this MCCB can safely clear at each voltage without welding contacts or rupturing the case. In a 480 V panel with a transformer-fed bus that can deliver 50 kA symmetrical, this breaker has headroom. At 500 V the rating drops to 11.9 kA, so verify your available fault current at that voltage before committing the BOM line.
Thermal derating and panel fill
The 32 A rating holds from 40 °C to 50 °C ambient; above that it derates to 31 A at 55–60 °C and 30 A at 65–70 °C. If the breaker sits in a crowded enclosure near other heat sources, use the 30 A figure for continuous load planning. The 10.6 W maximum power loss at rated current is modest — no special ventilation required in a standard IP40 front panel, but group several breakers and the cumulative heat may shift the derating curve.
Physical fit and environment
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep. The IP40 front protection means it is suitable for dry indoor panels where no water jets or dust ingress are expected. Storage range is -40 °C to 80 °C; operating range is -25 °C to 70 °C. Rated insulation voltage is 690 V, and maximum DC operating voltage is 500 V — useful for battery or DC bus applications within that limit.