The Siemens SENTRON 3VA1110-3EF36-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 100 A at 40 °C through 50 °C, with a TM240 thermal-magnetic release. The interrupting ratings span 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — so it handles high-fault utility feeds and transformer-secondaries down to the branch level. An integrated undervoltage release (UVR) is fitted as standard, which drops the breaker on loss of control voltage — common in emergency-stop chains or undervoltage protection schemes.
What the ratings mean for fit
The 100 A continuous rating holds flat from 40 °C to 50 °C, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C — so in a warm panel (say 55 °C ambient) you lose 4 A of headroom. The TM240 release means the thermal pickup is fixed at 240 A (2.4× In), magnetic instantaneous at a multiple of that; it is not adjustable, so selectivity studies need to account for that fixed band. The interrupting ratings at multiple voltage levels allow coordination downstream of a transformer or upstream of a distribution panel without oversizing the breaker for every fault scenario.
Panel integration
The breaker measures 70 mm deep, 76.2 mm wide, and 130 mm high — a standard SENTRON 3VA footprint that fits existing DIN-rail or screw-mount panel layouts. IP40 on the front means it is protected against tools and small wires but not washdown; mount inside a sealed enclosure for wet or dusty environments. The integrated auxiliary trip order code is 3VA9608-0BB25, which mates to the breaker's accessory slot for remote tripping or status feedback.