What this MCCB delivers for your line
The Siemens SENTRON 3VA1180-5EF36-0AC0 is a 3-pole molded case circuit breaker rated 80 A at 40 °C, with a TM240 thermal-magnetic release designed for line protection. It carries a 187 kA interrupting capacity at 240 V, dropping to 121 kA at 415 V and 75.6 kA at 440 V — enough headroom for most industrial distribution panels where high fault current is a concern. The 800 V rated insulation voltage means it handles 480 V and 600 V class systems without derating the dielectric gap. Rated current holds steady at 80 A from 40 °C through 50 °C, then tapers to 74 A at 70 °C — useful if the breaker sits in a warm enclosure near other heat sources. Power loss at full load is 19.2 W, which matters for thermal coordination inside a sealed panel.
Physical fit and panel integration
Dimensions are 130 mm height, 76.2 mm width, and 70 mm depth — a standard 3-pole MCCB footprint that mounts on a DIN rail or directly to a backplate via the screw terminals. The 70 mm depth is shallow enough for most 200 mm deep enclosures, leaving room for wiring and busbars behind the breaker.