The Siemens SENTRON 3VA1110-3EF36-0KA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A at 40 °C, built for line protection in distribution panels and motor control centers. It carries a TM240 thermal-magnetic overcurrent release and an integrated shunt trip (STL) for remote tripping, with a rated insulation voltage of 800 V. Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V — figures that govern fault-clearing capability at the point of common coupling. The TM240 release is fixed-thermal, fixed-magnetic, so coordination studies rely on the published trip curve rather than field-adjustable settings.
Current derating and thermal limits
The breaker carries a full 100 A from 40 °C through 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. Operating ambient range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. Maximum power loss is 25 W.
Panel fit and dimensions
The 3VA1110-3EF36-0KA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. The 3-pole, 100 A frame mounts into standard SENTRON panelboard and MCCB enclosures. No undervoltage release or ground-fault monitoring is fitted on this variant; the shunt trip occupies the auxiliary release slot.