MCCB for line protection — 80 A frame, high interrupting capacity
The Siemens SENTRON 3VA1080-3ED32-0CC0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries an 80 A continuous rating at 40 °C ambient, with minimal derating up to 70 °C — at 65 °C it still holds 75 A, so it stays useful in warm enclosures without oversizing the frame. Breaking capacity is the headline: 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V. That puts it in the high-interrupting class for a 80 A frame — it handles fault currents on strong utility feeds or near large transformers without needing a current-limiting fuse upstream. The unit includes an undervoltage release (UVR) as the auxiliary release type, and comes with two auxiliary switches HQ for status feedback. Rated insulation voltage is 800 V, so it's comfortable on 480/277 V or 600 V systems with margin.
Sourcing and lifecycle — current production, quoted to order
The SENTRON 3VA series is Siemens' standard MCCB platform for panel builders and OEMs. The 3VA1080 frame is the 80 A size, and this order code specifies line protection with an undervoltage release and two auxiliary switches — a common configuration for main breaker or feeder duty where loss-of-voltage tripping is required by code or safety logic.
Panel integration — footprint and mounting
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a compact 3-pole MCCB that fits standard Siemens SENTRON mounting bases and busbar systems. The 70 mm depth (2.76 in) keeps it within typical distribution panelboard clearances. Rated for operation from -25 °C to 70 °C ambient, with storage from -40 °C to 80 °C. Maximum power loss is 21.7 W at rated load — thermal management is straightforward in ventilated enclosures.