Line-down replacement: what bolts in
Siemens SENTRON 3VA1010-3ED42-0KA0 is a 4-pole molded case circuit breaker rated 100 A at 40 °C, fitted with a TM210 thermal-magnetic release and a factory-installed shunt trip (STL). Breaking capacity steps: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, 7.5 kA at 500 V and 690 V — covers the fault-current range for most 400 V industrial distribution panels.
Sizing and derating
Carries full 100 A up to 50 °C ambient. Derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, 91 A at 70 °C — the thermal curve matters if this breaker lands in a hot enclosure or near a drive. Rated insulation voltage 800 V, operating range -25 °C to 70 °C. Storage range -40 °C to 80 °C.
Panel fit
Mounts on standard DIN rail or panel-mount. Dimensions: 130 mm high, 101.6 mm wide, 70 mm deep — 4-inch width footprint, same as the 3VA1 frame family. 4-pole configuration with line-protection design. No communication module, no ground-fault monitoring — this is a straight thermal-magnetic breaker with a shunt trip for remote emergency-off.