What this MCCB carries and where it fits
The Siemens SENTRON 3VA1110-4EF36-0AB0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection duty. It carries a continuous current of 100 A at 40 °C, derating to 91 A at 70 °C — the thermal-magnetic TM240 release handles overload and short-circuit response without an undervoltage or shunt trip module (no voltage trigger, no undervoltage release fitted). Breaking capacity is the headline number here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA at 240 V means it can safely interrupt a fault current up to that level without upstream fuses or a larger frame — useful for high-fault panels close to a transformer. Rated insulation voltage is 800 V, so the breaker is rated for 690 V line-to-line systems with margin. The 25 W maximum power loss is the heat the breaker dumps into the enclosure at full load — factor that into panel thermal calculations if you're packing multiple breakers in a sealed cabinet.
Physical fit and mounting
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. The 76.2 mm width fits Siemens SENTRON 3VA mounting bases.
What the TM240 release means for coordination
The TM240 overcurrent release is a thermal-magnetic type with a 240 A fixed magnetic pickup. That means the thermal element tracks the 100 A frame rating, while the magnetic instantaneous trip is set at 240 A — roughly 2.4x In. For selective coordination with downstream breakers, this gives a narrow magnetic band; verify the instantaneous threshold against your downstream device's let-through before committing the BOM.