The Siemens SENTRON 3VA1110-5EF32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for line-protection duty, with a continuous current Iu of 100 A and an interrupting capacity of 187 kA at 240 V — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. Rated insulation voltage Ui is 800 V, and the interrupting curve drops to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — so the same breaker can be applied across 240–690 V systems as long as the available fault current stays under those thresholds. The 70 mm depth and 76.2 mm width match the standard 3VA fixed-mount footprint; it bolts directly onto the same busbar or mounting plate as other 3VA frames without re-drilling.
Thermal derating — what the 100 A means in a warm panel
At 55 °C it drops to 96 A, at 60 °C to 94 A, at 65 °C to 92 A, and at 70 °C to 90 A.
What is not on this variant
No auxiliary contact block is fitted (auxiliary contact version: Without), no trip indicator, no voltage trigger, no phase-failure detection, and no communication function. The only auxiliary release is the undervoltage release (UVR). If you need a shunt trip, auxiliary contacts, or an electronic trip unit, this is not the variant — the 3VA1110-5EE32-0JA0 carries a different release and auxiliary-contact configuration.
The UVR coil (order code 3VA9608-0BB24 for the integrated auxiliary trip) is factory-fitted; verify the control-voltage rating matches your circuit before applying power.