What this MCCB delivers
The Siemens 3VA1180-6EF36-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated 80 A at 40 °C, with a 3-pole configuration designed for line protection in distribution panels. Its interrupting capacity hits 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — figures that tell you it handles high-fault-current scenarios like transformer secondaries or large motor control centers without cascading failure upstream. At 500 V and 690 V the rating drops to 17 kA, still sufficient for most industrial 480/600 V systems when coordinated properly. The 80 A rating holds flat from 40 °C through 50 °C, then derates gradually to 74 A at 70 °C — a thermal curve that matters when you pack breakers into a warm enclosure. Insulation voltage is rated 800 V, so it's comfortable on 480/600 V systems with margin. This variant ships with an undervoltage release (UVR) fitted, plus two auxiliary switches and one trip alarm switch (HQ configuration). The UVR drops the breaker on loss of control voltage — standard for safety circuits where a voltage dip must open the load. No ground-fault monitoring module is included; that's a separate add-on if you need it.
Panel fit and thermal reality
The 3VA1180-6EF36-0DH0 measures 76.2 mm wide, 130 mm high, and 70 mm deep — a 3-pole MCCB footprint that drops onto a standard DIN rail or mounts via the rear screw terminals. At 21.7 W maximum power loss, it dumps enough heat that adjacent breakers need spacing per the manufacturer's derating table; don't pack them tight in a sealed enclosure without airflow. Operating range spans -25 °C to 70 °C, storage from -40 °C to 80 °C. The trip indicator gives a visual flag on fault — useful for panel walk-downs without opening the door.