What this MCCB carries and where it fits
The Siemens SENTRON 3VA1110-5EF36-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, with a TM240 thermal-magnetic overcurrent release. At 40 °C it carries 100 A continuously, derating to 91 A at 70 °C — so in a warm panel you lose about 9 % of the headroom. The interrupting ratings are the headline here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA at 690 V. That 187 kA figure at 240 V means this breaker can clear a fault on a high-capacity transformer secondary without the upstream fuse needing to open — real selectivity headroom for a distribution board. It ships with a shunt trip (STL) auxiliary release built in — the design-of-auxiliary-release field confirms it, and the supplied basic switch is order code 3VA11105EF360AA0. That means you can remote-trip this breaker from an E-stop or a PLC digital output without adding an external shunt module. No undervoltage release, no ground-fault monitoring, no communication function — this is a straight line-protection MCCB with a remote trip option, sized for a distribution panel where you need the interrupting capacity but don't need the bells and whistles.
Physical fit and panel integration
Dimensions: 130 mm height, 76.2 mm width (3 inches), 70 mm depth. That 70 mm depth (2.76 in) is the body-only — it mounts on a DIN rail or directly to a backplate via the standard SENTRON 3VA footprint. If you're swapping into a panel that was laid out for a 3VA1110-5ED36-0AC0, the width and depth are identical; the height matches too, so no re-drilling or bus-bar rework. The 3-pole format with the shunt trip adds about 25 W max power loss at full load — factor that into your enclosure thermal calc if the panel is tight on dissipation.
Temperature derating and operating range
Rated current holds flat at 100 A from 40 °C through 50 °C. At 55 °C it drops to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A. The operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Insulation voltage is rated 800 V, so it's comfortable on 480 V and 600 V class systems with margin. The TM240 release is a thermal-magnetic type — the thermal element handles overloads, the magnetic element handles short-circuits up to the interrupting rating.