What this MCCB carries and where it fits
The Siemens SENTRON 3VA1010-2ED42-0KH0 is a 4-pole molded case circuit breaker (MCCB) rated for 100 A at 40 °C ambient, with a breaking capacity of 52.5 kA at 240 V AC. It's designed for line protection in distribution panels — the 4-pole configuration covers three-phase plus neutral, common in North American and European commercial/industrial switchboards where a switched neutral is required or local code demands it. Rated insulation voltage is 800 V, so it's comfortable in 480/277 V and 600 V systems with headroom. The 100 A frame at 40 °C holds flat through 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C — useful if the breaker sits in a warm enclosure or near other heat sources. Breaking capacity steps down with voltage: 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. That 7.5 kA at 690 V is the figure to check if you're feeding a 690 V drive or transformer primary — it's not a high-fault-duty rating at that voltage, so verify available fault current at the panel.
Auxiliaries and releases — what's built in
This variant ships with a shunt trip (STL) release and an auxiliary switch block: 2 auxiliary switches plus 1 trip alarm switch (HQ configuration). The shunt trip lets you remotely trip the breaker via a control signal — typical for emergency-stop circuits or interlocking with a fire-suppression panel. The HQ block gives status feedback: one set for breaker position (open/closed), one for trip indication. There's no undervoltage release on this order code, and no ground-fault monitoring module. If you need UVR or GF protection, you'd step to a different suffix. The trip indicator flag is present, so a quick visual check at the panel door confirms a trip event. Power loss is listed at 25 W maximum — that's the heat the breaker dissipates at full rated current. Factor it into enclosure thermal calculations if you're packing multiple breakers in a closed panel.
Mounting and dimensions
Dimensions: 130 mm height, 101.6 mm width, 70 mm depth. The 101.6 mm width (4 inches) is standard for a 4-pole MCCB in this frame size — it'll fit existing SENTRON 3VA panel footprints and most DIN-rail or backplate mounting patterns. Depth of 70 mm is shallow enough for compact enclosures.