The Siemens 3VA1110-6EF36-0JH0 is a SENTRON 3-pole molded case circuit breaker (MCCB) rated 100 A at 40 °C, with a maximum breaking capacity of 220 kA at 240 V. It's designed for line protection duty — the core job of an MCCB in a distribution panel: clear high fault currents upstream of branch circuits without cascading failures. The 220 kA figure at 240 V tells you this breaker handles utility-level fault currents, typical at a service entrance or main switchboard in industrial and commercial buildings.
Ratings that govern the fit
The 100 A rating holds flat from 40 °C to 50 °C, then derates gradually to 91 A at 70 °C. That thermal curve matters if this breaker sits in a hot switchroom or a non-ventilated enclosure — you don't lose headroom until the ambient climbs above 50 °C. The 220 kA at 240 V is the high-end interrupting rating; at 415 V it's still 154 kA, and at 690 V it drops to 17 kA. For most 400 V-class industrial panels, the 154 kA figure is what you coordinate against downstream breakers.
Built-in accessory set
Factory-fitted with a shunt trip (STL) for remote tripping and a 2-auxiliary-switch + 1-trip-alarm-switch HQ configuration. That means you get status feedback (open/closed), a separate alarm contact on trip, and remote shutdown capability — all without adding external relay logic. No undervoltage release or ground-fault monitoring on this variant, so if those are needed, they'd be external add-ons.
Physical fit and panel integration
Width is 76.2 mm (3 in), depth 70 mm, height 130 mm. That 3-inch width is the standard 3-pole MCCB footprint for this current class — it occupies one 3-pole space on a DIN rail or panel-mount base. The 70 mm depth keeps it inside a 200 mm shallow enclosure without crowding the gland plate.