MCCB with shunt trip for line protection
The Siemens SENTRON 3VA1010-4ED42-0KA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A at 40 °C. Its TM210 thermal-magnetic release provides overload and short-circuit protection, and the integrated shunt trip (STL) allows remote tripping via a control voltage — useful for emergency-stop or interlock circuits where you need to drop the load without manual intervention.
Breaking capacity across the voltage range
This breaker delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Those numbers govern selectivity coordination downstream — at 415 V common in industrial panels, 75.6 kA gives headroom for most transformer-fed fault currents without cascading upstream.
Thermal derating — what the 100 A rating actually means
The 100 A rating holds at 40 °C, 45 °C, and 50 °C. Above that, it steps down: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your panel ambient runs warm — say, inside a non-ventilated enclosure near other heat sources — size the load to the derated figure, not the nameplate 100 A.
Physical footprint and panel fit
Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep. The 4-pole width (101.6 mm) is standard for this frame size — it occupies four 25.4 mm module spaces on a DIN rail, matching the SENTRON 3VA family footprint. The rated insulation voltage is 800 V, so it suits 480 V and 600 V class systems with margin.