The Siemens SENTRON 3VA1010-4ED32-0HA0 is a 3-pole molded case circuit breaker (MCCB) for line protection, rated 100 A continuous at 40 °C and carrying a 121 kA interrupting capacity at 240 V. The TM210 thermal-magnetic release handles overload and short-circuit curves; a built-in shunt trip (STL) allows remote tripping for emergency-off or supervisory control.
Interrupting ratings and thermal derating
Interrupting capacity drops across system voltages: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V. That means this breaker is sized for high-fault commercial or industrial panels at lower voltages; at 690 V it still clears 11.9 kA, enough for most 480/600 V class distribution. The thermal derating curve holds a full 100 A from 40 °C up to 50 °C, then steps down to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C — useful when the breaker lives near a hot transformer or in a crowded enclosure.
At 70 mm deep by 76.2 mm wide by 130 mm tall, this breaker fits a 3-pole MCCB footprint common to Siemens 3VA frames. The shunt trip (STL) auxiliary release allows remote undervoltage or shunt-trip control without an external contactor. No communication function onboard — this is a standalone line-protection device, not a power-monitoring breaker. Insulation voltage rated 800 V, operating range -25 °C to 70 °C, storage -40 °C to 80 °C.