What this MCCB is and what it does
The Siemens SENTRON 3VA1010-4ED36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, designed for line protection in industrial distribution panels. Its TM210 thermal-magnetic overcurrent release provides fixed thermal and magnetic trip settings, so it's a straightforward fit for feeder circuits where adjustable trip curves aren't needed. The 800 V rated insulation voltage means it can be used in 400 V and 690 V systems without derating the insulation clearance.
Breaking capacity — what the numbers mean for your fault duty
The 3VA1010-4ED36-0AA0 delivers 121 kA breaking capacity at 240 V AC, dropping to 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. These are the maximum fault currents it can safely interrupt at each voltage — critical for verifying SCCR compliance with the upstream transformer or generator. At 690 V the 11.9 kA rating is the binding limit; if your available fault current exceeds that at this voltage, you need a higher-rated frame or a current-limiting upstream device.
Thermal derating — real-world current capacity
The breaker carries its full 100 A rating from 40 °C through 50 °C ambient. Above that, it derates linearly: 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 hot, use the 70 °C figure for sizing.
Panel fit and integration
The 3VA1010-4ED36-0AA0 measures 70 mm deep, 76.2 mm wide, and 130 mm tall — a standard MCCB footprint that mounts directly onto a DIN rail or panel-mount adapter in most industrial enclosures. Maximum power loss is 25 W, which should be factored into enclosure thermal calculations if the panel is densely populated.