What this MCCB delivers — and where the ratings matter
The Siemens SENTRON 3VA1132-5EF36-0JH0 is a 3-pole molded case circuit breaker rated for 32 A continuous current (Iu) with a TM240 thermal-magnetic overcurrent release. The headline number here is the interrupting capacity: 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V. That means it can safely clear a bolted fault at those levels without welding contacts or rupturing the case — critical for high-fault panels close to the transformer secondary. At 690 V the rating drops to 17 kA, still enough for most industrial motor branch circuits. The 32 A rating holds flat from 40 °C to 50 °C; above that it derates gradually to 28.8 A at 70 °C, so if this breaker lives in a hot enclosure you need to account for the thermal curve.
Panel fit and integration
Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall — a standard SENTRON 3VA frame size that bolts directly into the same footprint as other 3VA1-series breakers. The front face carries an IP40 protection class, fine for a closed panel; no washdown rating here. Auxiliary contact block is factory-fitted as 2 auxiliary switches plus 1 trip alarm switch (HQ version), so you get remote status and fault indication without adding a separate module. A shunt trip release (STL) is integrated — order code 3VA9688-0BL32 for the trip coil itself. No undervoltage release, no communication module, no ground-fault monitoring on this variant; it's a straight line-protection breaker.