What this MCCB carries
The Siemens SENTRON 3VA1010-3ED42-0AC0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A at 40 °C with the TM210 thermal-magnetic release. Rated insulation voltage is 800 V, and the interrupting ratings step from 75.6 kA at 240 V down to 7.5 kA at 690 V — so the SCCR headroom depends on your system voltage. Thermal derating is flat to 50 °C (full 100 A), then drops to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C — the figure to watch if the breaker lives in a warm enclosure.
Lifecycle and compliance posture
The part is designed with two auxiliary switches (HQ type) and uses the 3VA10103ED420AA0 as its basic switch module — the auxiliary switch count is fixed at two, no communication function, no undervoltage release, and no ground-fault monitoring on this variant.
Panel fit and integration
Dimensions are 130 mm high, 101.6 mm wide, and 70 mm deep — standard MCCB footprint for a 4-pole 100 A frame, mounts on a DIN rail or panel-mount adapter. Maximum power loss is 25 W, so factor that into enclosure thermal calculations if the panel is sealed or tightly packed. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.