SENTRON 3VA1010-2ED36-0BC0 — 100 A MCCB with Undervoltage Release
The Siemens SENTRON 3VA1010-2ED36-0BC0 is a 3-pole molded case circuit breaker (MCCB) rated 100 A at 40 °C, designed for line protection in distribution panels and motor control centers. It carries a 52.5 kA breaking capacity at 240 V, derating to 32 kA at 415 V and 13.6 kA at 440 V — figures that govern its fault-interruption capability on a 400 V three-phase system. The breaker includes an undervoltage release (UVR) and two auxiliary switches HQ, so it can signal trip status and drop out on loss of control voltage without an external relay.
Breaking Capacity Across Voltages
The rated ultimate short-circuit breaking capacity (Icu) is specified per IEC 60947-2: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V. At a common 400 V supply the 32 kA figure applies — verify the prospective fault current at the installation point stays under that limit. The 7.5 kA at 690 V means this breaker can serve 690 V line-side applications where fault levels are moderate.
Thermal Derating and Power Loss
The 100 A rating holds at ambient temperatures up to 50 °C. Above that, derate linearly: 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 27.5 W — relevant for enclosure heat calculation when multiple breakers are ganged in a panel. Operating range spans -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Panel Fit and Auxiliary Wiring
Footprint: 76.2 mm wide (3 in), 130 mm tall (5.12 in), 70 mm deep (2.76 in) — fits standard SENTRON 3VA panel cutouts. The two auxiliary switches HQ mount internally and share the breaker's compact depth; no external add-on block needed. The undervoltage release (UVR) is wired to a separate control voltage; verify polarity and that the supply is stable — a dip below dropout will trip the breaker.