The Siemens SENTRON 3VA1110-5EF32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C, with an interrupting capacity of 187 kA at 240 V. It is designed for line protection in industrial distribution panels, and the 187 kA rating means it can safely clear high-fault currents without upstream cascading — critical for main or tie-breaker positions where available fault current is high.
Interrupting and Continuous Ratings
Interrupting capacity drops with voltage: 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. The continuous current holds at 100 A 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. This thermal profile is typical for a 100 A frame — the breaker doesn't need to be oversized for a 40 °C panel ambient, but above 50 °C the derating curve governs the actual load it can carry. Rated insulation voltage is 800 V, and maximum power loss is 25 W. The breaker includes a trip indicator and a voltage trigger, with a shunt trip (STL) auxiliary release and 2 auxiliary switches plus 1 trip alarm switch (HQ). No undervoltage release or ground-fault monitoring is fitted on this variant.
Physical Fit and Integration
Dimensions are 70 mm depth, 76.2 mm width, and 130 mm height — a standard 3-pole MCCB footprint that mounts directly onto a DIN rail or panel-mount base in a distribution board. The 76.2 mm width (3 inches) matches the typical 3-pole MCCB slot pitch, so it drops into existing SENTRON or comparable panel layouts without busbar rework.