What this MCCB carries — the 100 A TM210 spine
The Siemens 3VA1010-3ED36-0KH0 is a 3-pole SENTRON molded case circuit breaker rated for 100 A continuous current (Iu) with a TM210 thermal-magnetic overcurrent release. That TM210 designation means the thermal pickup is fixed at 100 A, and the magnetic short-circuit trip is set at 10x In — so it holds motor inrush without nuisance tripping but clears a bolted fault fast. Breaking capacity runs from 75.6 kA at 240 V down to 7.5 kA at 690 V, which covers most industrial distribution panels up to the 690 V tier.
Derating and thermal budget — the real-world current
This breaker holds 100 A flat from 40 °C through 50 °C. At 55 °C it derates to 96 A, at 60 °C to 94 A, and at 70 °C to 90 A. That means in a warm panel — say 55 °C ambient — you lose 4 A of headroom. If your continuous load is 95 A at that temp, it holds; if you're pushing 98 A, you need to either ventilate the enclosure or step up to the next frame.
Auxiliary contacts and shunt trip — what's wired in
Factory-fitted with 2 auxiliary switches plus 1 trip alarm switch (HQ configuration) and a shunt trip release (STL) — order code 3VA9688-0BL33 for the integrated auxiliary trip module. That shunt trip lets you remote-trip the breaker via a PLC or E-stop relay, which is standard for safety circuits or remote disconnect panels. No undervoltage release, no communication module, no ground-fault monitoring on this variant — it's a clean line-protection build.
Panel fit — dimensions and IP
Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep — standard 3-pole MCCB width for a 100 A frame. IP40 on the front, meaning it's protected against tools and wires >1 mm but not sealed against moisture; keep it inside a panel, not in a washdown zone.