What this MCCB delivers
The Siemens 3VA1116-5FD42-0AA0 is a SENTRON molded case circuit breaker rated 80 A continuous, 4-pole, with a TM210 thermal-magnetic trip unit — meaning the thermal element handles overloads and the magnetic element clears short-circuits without external power. Interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V, so it can break fault currents at those levels without welding contacts or cascading upstream. Rated insulation voltage is 800 V, which covers most 480/600 V distribution panels with margin. Thermal derating is published across the full operating range: 160 A continuous at 40 °C, 158 A at 55 °C, 150 A at 70 °C. If your panel ambient runs hot, the 80 A frame still holds its rating comfortably — the headroom is there for derating downstream conductors or for upsizing the breaker in a warm enclosure. Power loss at rated load is 38 W maximum — modest for a 4-pole 80 A frame, so it won't drive up internal enclosure temperature much. Front-side IP40 protection keeps dust out of the handle and trip-indicator area in a typical panel environment.
Sizing and selectivity in the panel
The 3VA1116-5FD42-0AA0 measures 130 mm high, 101.6 mm wide, 70 mm deep — a standard 4-pole MCCB footprint that fits Siemens 3VA panelboards and most DIN-rail adapters. The 70 mm depth leaves clearance for rear-connection busbars or cable lugs without forcing a deeper enclosure. Line protection design means it's configured for feeder or main breaker duty, not motor protection (no adjustable overload class). The TM210 release is fixed thermal-magnetic; no electronic trip unit, no communication function, no undervoltage release — a straightforward, no-frills breaker for branch or main distribution. Operating temperature range is -25 °C to 70 °C; storage range -40 °C to 80 °C. If the breaker sits in an unheated warehouse before installation, the storage spec covers cold soak without damage.