SENTRON 3VA1110-6EF36-0AC0 — MCCB for Line Protection
The Siemens 3VA1110-6EF36-0AC0 is a 3-pole SENTRON molded case circuit breaker (MCCB) designed for line protection, carrying a TM240 thermal-magnetic overcurrent release and a 100 A rating at 40 °C ambient. Its 154 kA breaking capacity at 415 V AC gives it the interrupting capability for high-fault industrial distribution panels — the kind of SCCR headroom that avoids cascading upstream breakers during a bolted fault. Rated insulation voltage is 800 V, which covers 690 V line-to-line systems with margin for surge coordination.
What the Ratings Mean for Fit
The 100 A continuous rating holds flat from 40 °C to 50 °C — no derating needed in a typical 50 °C panel interior. Above that it drops to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your enclosure runs hot, that 91 A ceiling at 70 °C is the number to size against, not the 100 A label. Breaking capacity drops with 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. On a 480 V system (common in North America) the 121 kA at 440 V is the closest published figure — expect a similar or slightly lower value at 480 V. The TM240 release is a thermal-magnetic type — thermal element for overload protection, magnetic short-circuit trip. No electronic adjustment, no communication function, no ground-fault monitoring built in. It is a fixed-trip breaker for straightforward line protection where selectivity is set by frame size and cable impedance.
Mounting and Integration
Width is 76.2 mm (3 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). That 76.2 mm footprint matches the standard 3-pole MCCB pitch on a DIN rail or panel-mount base — drops into the same cutout as most SENTRON 3VA1 frame breakers. Comes with 2 auxiliary switches (HQ type) factory-fitted. No undervoltage release, no voltage trip, no trip indicator. If your safety circuit requires a shunt trip or UVR for emergency stop, this variant does not carry it — you would need a different order code in the 3VA1 family. The basic switch variant is 3VA11106EF360AA0 — that is the internal switching mechanism; the -0AC0 suffix adds the auxiliary switches and the specific TM240 release configuration.
Lifecycle and Sourcing
Operating temperature range is -25 °C to +70 °C; storage from -40 °C to +80 °C. The storage minimum matters if the breaker sits in an unheated warehouse before installation — it can handle the cold, just not powered.