MCCB for high-fault panel feeds
The Siemens SENTRON 3VA1140-5EF32-0KC0 is a 3-pole molded case circuit breaker rated for 40 A continuous current (Iu) at 40 °C, with a TM240 thermal-magnetic overcurrent release.
Breaking capacity across voltage bands
The 187 kA at 240 V is the headline number, but the real-world selectivity story is at 415 V (121 kA) and 440 V (75.6 kA).
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The integrated shunt trip (STL) and two HQ auxiliary switches are wired via the front terminals; the auxiliary release designation 3VA9688-0BL33 is the factory-matched accessory. No undervoltage release or phase-failure detection on this variant, so external monitoring is needed if those functions are required.