What this MCCB delivers
The Siemens SENTRON 3VA1140-5EF36-0JH0 is a 3-pole molded case circuit breaker rated for 40 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. It is configured for line protection — no ground-fault monitoring, no undervoltage release, no communication module. The interrupting ratings are the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V.
Thermal derating and endurance
Above that, it derates gradually: 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C. Mechanical endurance is 15,000 operations — that's the latching endurance figure, not the electrical endurance under load.
Auxiliary and trip options
The integrated auxiliary trip order code is 3VA9688-0BL32. There is no undervoltage release, no phase-failure detection, and no communication function — it is a straightforward, non-communicating line protection device. The voltage trigger is present, meaning the shunt trip can be energized from a control voltage to open the breaker remotely.