The Siemens 3VA2125-6HL36-0AA0 is a SENTRON molded case circuit breaker (MCCB) sized for line protection in distribution panels. Rated 25 A continuous current with a 3-pole configuration, it carries the ETU320 electronic overcurrent release — a microprocessor-based trip unit that provides adjustable overload and short-circuit protection curves, unlike fixed thermal-magnetic breakers. The interrupting capacity reaches 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V, so it handles high-fault scenarios typical of industrial main feeders or large branch circuits.
Mounting and integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The front face carries IP40 protection, sufficient for dry indoor panels; no additional sealing is needed for typical control-room environments. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C, so it can sit in unheated warehouses or hot machine cabinets.