The Siemens SENTRON 3VA1180-3GE46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 80 A continuous current (Iu) with a TM220 thermal-magnetic overcurrent release. Its interrupting capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — the 415 V figure is the one that governs most European industrial panel designs. The breaker holds its full 80 A rating from 40 °C up through 50 °C, then derates gradually to 74 A at 70 °C, which matters when it's packed into a warm enclosure alongside other heat sources.
Interrupting capacity and thermal performance
The interrupting capacity drops with system voltage — from 75.6 kA at 240 V down to 11.9 kA at 500 V and 690 V. That 11.9 kA floor at 690 V still covers most motor branch circuits on 690 V distribution. The TM220 release provides fixed thermal and magnetic trip settings; no adjustment dials on the front. The front face carries an IP40 protection class, meaning it's protected against tools and wires over 1 mm but not against water ingress — standard for panel-mount breakers behind a closed cabinet door.
Physical fit and panel integration
Dimensions are 101.6 mm wide, 130 mm high, and 70 mm deep. The 70 mm depth is the key fit check for shallow backpanels or gland-plate clearance — measure the available depth from the mounting surface to the door before committing. The 101.6 mm width (4 inches) occupies two standard 50 mm DIN-rail module spaces, so it fits a 4-pole MCCB footprint common across the SENTRON 3VA family. Rated insulation voltage is 800 V, storage range from -40 °C to 80 °C, operating range from -25 °C to 70 °C.