What this breaker is and where it fits
The Siemens SENTRON 3VA1110-6EF42-0AA0 is a 4-pole molded case circuit breaker (MCCB) designed for line protection — the primary feeder or distribution breaker in a panel, not a motor-protective device. It carries a TM240 thermal-magnetic overcurrent release, so the thermal element handles overloads and the magnetic element clears short-circuits. Rated 100 A continuously at 40 °C, it holds that rating through 50 °C before derating begins at 55 °C (98 A) and down to 91 A at 70 °C. The 220 kA breaking capacity at 240 V AC means it can safely interrupt a fault current up to that level without upstream fuses — a strong specification for high-fault service-entrance or industrial distribution boards. The front face is IP40, finger-safe but not washdown-rated; mount inside a closed panel.
Breaking capacity across voltages
This breaker's interrupting rating varies with system voltage: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The sharp drop above 440 V means you need to confirm the available fault current at your actual line voltage — at 690 V the 17 kA rating is still adequate for many industrial networks, but not for high-fault installations. The insulation voltage is rated 800 V, so the breaker is physically capable of 690 V service.
Dimensions and panel fit
The breaker measures 70 mm deep, 101.6 mm wide, and 130 mm tall. The 101.6 mm (4-inch) width is standard for a 4-pole MCCB in this class — it fits the common DIN-rail or mounting-plate footprint without surprises. Depth of 70 mm leaves room for rear busbar connections in a standard 200 mm deep enclosure. No undervoltage release or communication module fitted on this variant; it is a standalone thermal-magnetic breaker.