What this MCCB carries — and where it fits
The Siemens SENTRON 3VA1010-3ED36-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, with a continuous current Iu of 100 A and a TM210 thermal-magnetic release. The interrupting capacity hits 75.6 kA at 240 V and 52.5 kA at 415 V — numbers that matter when you're coordinating with an upstream transformer or a high-fault panel bus. At 440 V it still holds 32 kA, and at 500 V and 690 V it's rated 7.5 kA. That's a solid arc-extinction design for a 100 A frame; it means this breaker can sit close to the source without needing a current-limiting fuse ahead of it. The TM210 release is the overcurrent-protection element here — thermal for overload, magnetic for short-circuit. No undervoltage release, no ground-fault monitoring, no communication function. It's a straight line-protection MCCB: feed it, protect the cable, trip on fault. The auxiliary contact version is 2 auxiliary switches plus 1 trip alarm switch (HQ), which gives you a remote trip indication without needing a separate module.
Thermal derating — the real continuous current
The 100 A rating holds flat from 40 °C up to 50 °C. At 55 °C it derates to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A. If the panel ambient sits at 50 °C or below — which covers most ventilated enclosures — you get the full 100 A. Above that, the thermal element in the TM210 release responds earlier; the derating curve is linear enough to plan around. Maximum operating temperature is 70 °C, storage from -40 °C to 80 °C. Power loss is 25 W max. That's moderate for a 100 A frame — check your enclosure's thermal budget if you're stacking several breakers in a sealed box. The 70 mm depth and 76.2 mm width mean it fits the standard Siemens 3VA mounting footprint; no surprises on a DIN-rail or screw-fixed backplate.
Panel-fit dimensions
Height 130 mm, width 76.2 mm, depth 70 mm. That's a compact 3-pole MCCB for 100 A — it fits in the same cutout as earlier 3VA frames. The trip indicator and voltage trigger are present; the undervoltage release is not. If your panel was laid out for a 3VA1010-2ED32-0AD0, the footprint is identical, but check the auxiliary wiring — this one carries the HQ contact set (2 aux + 1 alarm) rather than a different configuration.