What this 100 A MCCB carries — and what it doesn't
The Siemens SENTRON 3VA2010-5HN36-0JH0 is a 3-pole molded case circuit breaker rated 100 A continuous across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Interrupting capacity hits 187 kA at 240 V AC, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3 kA at 690 V. That's a lot of fault-clearing headroom for a 100 A frame; it's sized for high-available-fault-current panels where a standard 65 kA MCCB would be marginal. This variant is configured for line protection (not feeder or motor protection), with a shunt trip (STL) release and a complement of two auxiliary switches plus one trip alarm switch HQ. No undervoltage release, no ground-fault monitoring, no communication module — it's a straightforward interrupting device with remote trip capability and status feedback. Power loss at rated current is 13.5 W maximum — figure that into enclosure thermal calculations if you're packing several breakers in a confined DIN-rail assembly.
Panel fit — dimensions and mounting
Footprint is 105 mm wide, 181 mm tall, 86 mm deep. That 86 mm depth (3.39 in) is the dimension that matters for gland-plate clearance and cover-bowl depth on a panel door — standard 120 mm deep enclosures clear it with room for wiring gutters. The 105 mm width (4.13 in) is the 3-pole frame width; verify against existing busbar or finger-safety shrouds if retrofitting into a live panel.
Auxiliary wiring and shunt trip note
The shunt trip (STL) lets you remotely open the breaker from a PLC dry contact or emergency-stop circuit — verify the release coil voltage matches your control supply (the order code doesn't encode coil voltage; it's a separate ordering step). The two auxiliary switches plus trip alarm switch give you three discrete status signals: breaker open/closed, and a separate alarm contact that changes state only on a fault trip. Useful for SCADA feedback without adding an external interposing relay.