The Siemens SENTRON 3VA2010-5KP32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, designed for line protection in distribution panels and industrial switchgear. Breaking capacity is 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — the 690 V figure is the ceiling for this frame, so on 690 V systems the available fault current must be limited to 3 kA or an upstream current-limiting device added. Rated insulation voltage is 800 V, and the breaker carries a shunt trip release (STL) for remote tripping — useful in emergency-stop or supervisory shutdown circuits. A communication function is built in, allowing integration with higher-level monitoring or control systems without an external adapter module.
Sizing and thermal performance
Continuous current holds at 100 A across the full ambient range from 40 °C to 70 °C — no derating needed up to the maximum operating temperature of 70 °C, which simplifies panel thermal calculations. Maximum power loss is 13.5 W, low enough that adjacent devices in a closed enclosure see minimal heat rise from this breaker alone. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Dimensions and panel fit
Footprint is 105 mm wide × 181 mm high × 86 mm deep — a standard MCCB form factor that fits most DIN-rail or panel-mount enclosures without re-drilling. The 105 mm width (4.13 in) matches the typical 3-pole MCCB slot in modular distribution boards, so it drops into existing SENTRON or comparable panel layouts.