Siemens 3VA1010-4ED32-0JC0 — 100 A SENTRON MCCB, Line Protection with Shunt Trip
The Siemens 3VA1010-4ED32-0JC0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A at 40 °C ambient. Its interrupting capacity at 240 V AC is 121 kA, which provides substantial fault-current headroom for downstream coordination in distribution panels. The breaker is fitted with a shunt trip release (STL) and two HQ auxiliary switches, enabling remote tripping and status feedback without an additional enclosure.
Breaking Capacity and Coordination
Per the specification, the interrupting capacity is rated at 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. For a panel designer performing selectivity analysis, the 121 kA figure at 240 V means this MCCB can safely clear a bolted fault at the main bus without upstream device intervention, provided the available fault current at the line side does not exceed that value. The rated insulation voltage is 800 V, which covers 480/277 V and 600 V nominal systems with margin.
Thermal Derating and Power Loss
The breaker carries 100 A continuously from 40 °C through 50 °C ambient. Derating begins at 55 °C (98 A), stepping down to 91 A at 70 °C. Maximum power loss is 25 W, which should be factored into enclosure thermal calculations, particularly in densely packed panels. Operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C.
Physical Dimensions and Panel Fit
The 3VA1010-4ED32-0JC0 occupies a 76.2 mm width (3 in), 130 mm height (5.12 in), and 70 mm depth (2.76 in). These dimensions match the standard SENTRON 3VA1 frame footprint, so a panel originally laid out for a 3VA1110-series MCCB will accept this unit without bus-bar or mounting-plate modifications. The 3-pole construction fits directly onto the DIN rail or mounting plate per the manufacturer's installation instructions.