MCCB for line protection — 80 A frame, high interrupting capacity
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.
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. Maximum power loss is 21.7 W at rated load — thermal management is straightforward in ventilated enclosures.