Siemens SENTRON 3VA1080-2ED42-0AC0 — 80 A MCCB, Line Protection
The Siemens 3VA1080-2ED42-0AC0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection. It carries an 80 A continuous current at 40 °C (derated to 74 A at 70 °C) and a TM210 thermal-magnetic overcurrent release — the '210' designates a fixed thermal pickup with magnetic adjustment range typical of this series. The 4-pole configuration covers three-phase plus neutral, making it a fit for main or feeder protection in distribution panels where full isolation of all live conductors is required. Breaking capacity is voltage-dependent: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 500 V and 690 V. At 415 V — the common industrial three-phase level — the 32 kA SCCR provides headroom for most secondary distribution applications without requiring a current-limiting upstream device. Rated insulation voltage is 800 V, so the breaker is suitable for 690 V line-to-line systems. Power loss at rated current is 19.2 W maximum — a figure to factor into enclosure thermal calculations when grouping multiple breakers in a panel. The operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C.
Panel Fit and Integration
The 3VA1080-2ED42-0AC0 measures 70 mm deep, 101.6 mm wide, and 130 mm tall. That 101.6 mm (4-inch) width is the standard 4-pole MCCB footprint in the SENTRON 3VA platform — it occupies the same mounting cutout and busbar pitch as other 4-pole 3VA frames, so a panel laid out for a 3VA1010-2ED32-0AD0 will accept this breaker without rewiring the bus or re-drilling the mounting plate. The breaker ships with two HQ auxiliary switches fitted (design of the auxiliary switch: 2 auxiliary switches HQ). There is no undervoltage release, no ground-fault monitoring, and no communication function on this variant — it is a pure line-protection device with basic status indication. The trip indicator is not present, so visual trip status is read from the handle position or the auxiliary switch state.