What this MCCB carries and where it fits
The Siemens SENTRON 3VA1010-3ED36-0AA0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, designed for line protection in distribution panels and industrial switchboards. Its TM210 overcurrent release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit response — a fixed-trip design that doesn't require adjustment in the field. Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V — numbers that tell you this breaker handles high fault current at lower voltages but derates sharply above 440 V. Rated insulation voltage is 800 V, so the internal clearance and creepage suit 690 V systems with margin.
Thermal derating — the real current you get
At 40 °C, 45 °C, and 50 °C the breaker holds the full 100 A rating. 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. Maximum power loss is 25 W — useful to know for enclosure heat calculations when the panel runs near the upper end of the operating range. Operating temperature spans -25 °C to 70 °C; storage range is -40 °C to 80 °C, so the breaker can sit in an unheated warehouse without issue.
Panel fit and dimensions
The 3VA1010-3ED36-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that mounts on a DIN rail or directly to a backplate with the provided screw terminals. No undervoltage release, no shunt trip, no communication module — this is a bare breaker for straightforward line protection where you don't need remote signaling or auxiliary functions.