The Siemens 3VA1110-6EF32-0HC0 is a SENTRON molded case circuit breaker (MCCB) rated at 100 A continuous current with a 3-pole configuration, designed for line protection in distribution panels and industrial switchgear. Its breaking capacity reaches 220 kA at 240 V AC, tapering to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V — so the real-world SCCR you can claim depends entirely on your system voltage. The 800 V rated insulation voltage (Ui) gives headroom for 690 V installations without derating the dielectric withstand. This MCCB carries a shunt trip release (STL) for remote tripping and two HQ auxiliary switches for status feedback to a PLC or annunciator panel. The base switch variant is 3VA11106EF320AA0, meaning the core mechanism is shared across the 3VA1110 family — useful if you're stocking multiple frame sizes.
Current derating and thermal limits
Rated 100 A at ambient temperatures up to 50 °C, the 3VA1110-6EF32-0HC0 begins derating above that: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your panel ambient runs at 60 °C, you lose 4 A of headroom — plan the load accordingly. Maximum power loss is 25 W, which factors into enclosure thermal calculations when grouping multiple breakers on a DIN rail. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage limit governs handling and warehousing, not running conditions.
Physical fit and panel integration
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a 3-pole MCCB footprint that fits standard Siemens 3VA panelboards and distribution blocks. The 76.2 mm width (3 inches) matches the typical 3-pole MCCB form factor for DIN-rail or bolt-on mounting. No undervoltage release is fitted; the shunt trip is the only auxiliary release, so if your safety circuit requires a UVR, you'll need a different variant or an add-on module.