Breaking capacity across voltages
The 3VA1180-5EF36-0KC0: This MCCB delivers 121 kA at 415 VAC and 75.6 kA at 440 VAC, then drops to 17 kA at 500 V and 690 V. That steep roll-off above 440 V means the interrupting rating at 480/500 V systems is a tenth of the 240 V figure — the 17 kA at 500 V still clears most industrial fault levels, but you verify the available fault current at the point of installation before committing the BOM line. The insulation voltage is rated 800 V, so the breaker is physically capable of the higher potential; the limitation is the arc-extinction chamber's performance at those voltages.
Built-in auxiliary and release options
The breaker ships with two auxiliary switches (HQ design) and a shunt trip release (STL). The shunt trip allows remote tripping from a safety relay or emergency-stop circuit — useful for a burner management system or turbine protection logic where you need a hard-wired trip path independent of the controller. There is no undervoltage release fitted on this variant, and no ground-fault monitoring module. The voltage trigger is present, meaning the shunt trip coil is wired for a specific control voltage; confirm the coil rating against your 24 VDC or 110 VAC control supply before panel integration.
Physical fit and panel integration
The 3VA1180-5EF36-0KC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a 3-pole MCCB footprint that fits standard Siemens SENTRON mounting bases and busbar systems. The 70 mm depth is the body only; add clearance for the shunt trip wiring and auxiliary switch cable exit at the front. Panel builders working to a 200 mm deep enclosure will have room for the breaker plus rear-connected busbars. The maximum power loss is 19.2 W, so ventilation slots or a small fan are advisable if multiple breakers are ganged in a sealed cabinet.
Environmental limits and storage
Operating temperature range is -25 °C to +70 °C; storage range extends from -40 °C to +80 °C. The storage maximum of 80 °C governs handling during shipping or warehouse storage in hot climates — the breaker can sit in a non-climate-controlled container, provided it is not energized above 70 °C. The -40 °C storage floor is standard for cold-chain or outdoor substation spares.