The Siemens 3VA1010-4ED36-0BF0 is a SENTRON molded case circuit breaker (MCCB) for line protection, rated 100 A at 40 °C across three poles. Its interrupting capacity hits 121 kA at 240 V, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — numbers that matter when you're coordinating selectivity downstream of a transformer or tying into a high-fault service entrance. The 800 V rated insulation voltage tells you it's built for 480/600 V class panels without derating the bus.
Ratings and what they mean for fit
The 100 A rating holds flat from 40 °C to 50 °C (–); above that it derates to 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 at 60 °C, you're still good for 96 A continuous — no need to oversize the frame. The 121 kA at 240 V is the headline SCCR number for North American 120/240 V split-phase or 240 V delta services; at 415 V (common in IEC 50 Hz plants) it's still 75.6 kA, enough for most distribution boards without a current-limiting fuse upstream. This breaker ships with an undervoltage release (UVR) built in and one auxiliary switch plus one trip alarm switch. That means it can drop the load on loss of control voltage — useful for emergency-stop circuits or undervoltage protection on motor starters — and the alarm contact signals a trip condition back to a PLC or annunciator without extra wiring.
Panel fit and integration
Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON distribution panels or DIN-rail adapter bases. The 27.5 W maximum power loss is moderate for a 100 A frame; factor it into enclosure thermal rise calculations if you're packing multiple breakers in a sealed cabinet.