The Siemens SENTRON 3VA1110-5EE32-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C ambient, with a TM220 thermal-magnetic overcurrent release. Its interrupting capacity hits 187 kA at 240 VAC — that's the headline number for fault-clearing duty on a high-capacity distribution board. The shunt trip (STL) auxiliary release allows remote tripping via a control signal, so this breaker can integrate into an emergency-stop chain or supervisory shutdown circuit without a separate undervoltage release.
What the ratings mean for fit
The 100 A rating holds flat from 40 °C through 50 °C, then derates to 98 A at 55 °C and 91 A at 70 °C. That's a tight thermal curve — useful when the breaker sits in a warm enclosure near other heat sources. The interrupting capacity drops from 187 kA at 240 V to 121 kA at 415 V and 75.6 kA at 440 V, so verify the available fault current at your system voltage. At 500 V and 690 V it still clears 17 kA, which covers most industrial motor-control panels. Rated insulation voltage is 800 V, meaning the internal clearances and creepage are designed for 690 V systems with margin.
Panel integration and wiring
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a 3-pole footprint that fits standard Siemens SENTRON mounting plates and busbar systems. The shunt trip release occupies the auxiliary slot, so no separate wiring compartment is needed for remote trip. Power loss is rated at 25 W maximum, which matters for enclosure thermal calculations when grouping multiple breakers.