What this MCCB delivers for a distribution panel
The Siemens SENTRON 3VA1180-4GD42-0AA0 is a 4-pole molded case circuit breaker rated at 80 A continuous, built around the TM210 thermal-magnetic trip unit. It is designed for line protection in commercial and industrial power distribution — the TM210 provides fixed thermal and magnetic settings, no electronic adjustment, which simplifies specification and reduces the chance of misconfiguration during commissioning. The interrupting capacity is the headline figure here: 121 kA at 240 V AC, 75.6 kA at 415 V AC, 52.5 kA at 440 V AC, and 11.9 kA at both 500 V and 690 V AC. That 75.6 kA at 415 V gives substantial fault-current headroom for most industrial panelboards fed from a typical 1 MVA transformer — you are unlikely to hit selectivity issues on the main breaker unless the upstream device is also tightly coordinated. Thermal derating is published across the full operating range: the breaker holds its full 80 A rating up to 50 °C ambient, then steps down to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If the panel sits in a non-conditioned space or near heat-generating gear, that derating curve tells you exactly where the continuous-current limit lands without guesswork.
Integration into the panel — footprint and connections
The 3VA1180-4GD42-0AA0 measures 130 mm high, 101.6 mm wide, and 70 mm deep. The 4-pole width (101.6 mm) is the standard 4-module footprint for SENTRON 3VA breakers, so it slots into existing panel layouts without re-drilling the mounting plate. Front-face protection is IP40 — fine for a closed panel, but not rated for washdown environments. Maximum power dissipation is 19.2 W at rated load. Rated insulation voltage is 800 V.