What this MCCB is for
The Siemens 3VA1110-6EF36-0HC0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection in distribution panels and motor control centers. Its 100 A continuous rating and 3-pole construction make it a fit for feeder circuits, main disconnects, or backup protection on 400 V class systems where the interrupting rating at 415 V (154 kA) covers high-fault locations like transformer secondaries or large motor banks. The TM240 thermal-magnetic release provides fixed thermal and magnetic trip settings — no field adjustment, which simplifies spec-in for a BOM line where the load current is known and stable. The 70 mm depth and 76.2 mm width fit standard Siemens panel footprints; plan for the 130 mm height when laying out busbar connections.
Breaking capacity across voltage levels
This MCCB carries a 220 kA interrupting rating at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. At 415 V, that 154 kA figure covers most industrial secondary substations without needing a current-limiting fuse upstream — a real advantage when panel space is tight and you want to avoid series-rated combinations.
Thermal derating and operating range
Rated continuous current Iu is 100 A from 40 °C through 50 °C ambient. Derating starts at 55 °C (96 A), dropping to 90 A at 70 °C. If the panel runs hot — near a drive cabinet or rooftop installation — the 70 °C figure gives a clear ceiling without guessing. Operating ambient range is -25 °C to 70 °C; storage range extends to -40 °C to 80 °C.
Integrated accessories and wiring
Factory-fitted with a shunt trip release (STL) for remote tripping and two auxiliary switches HQ for status feedback to a PLC or indication lamp. The auxiliary contact version is 2 form C (changeover) contacts, rated for control circuits up to the insulation voltage of 800 V. No undervoltage release, no ground fault monitoring, no communication module — this is a straightforward line-protection breaker with basic remote-trip capability.