What this MCCB brings to a 480 V panel
The Siemens SENTRON 3VA2325-6HN42-0AA0 is a 4-pole molded case circuit breaker rated for a continuous current of 250 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to the top of the operating window. That flat thermal curve is rare and simplifies panel build: you don't have to oversize the frame for a warm enclosure. Breaking capacity lands at 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 7.5 kA at 690 V — numbers that put it firmly in the high-interrupting class for industrial mains. The ETU350 electronic trip unit gives adjustable N-conductor protection (OFF, 50 %, 100 %) and line protection, with no undervoltage release or communication module onboard.
Lifecycle and sourcing posture
This order code carries a current-production lifecycle status — no phase-out or last-time-buy notice on record. It is sourced to order through independent distribution; availability and current pricing are confirmed at quote time against an RFQ.
Integration and environment
Dimensions are 248 mm high by 184 mm wide by 110 mm deep — a standard 4-pole MCCB footprint for panel-mount installation. Front-face protection is IP40, acceptable for enclosed switchboards. The operating temperature range of -25 °C to 70 °C and storage range of -40 °C to 80 °C cover most industrial and even some harsh-environment installations, including unheated electrical rooms or nacelle cabinets where condensation and cold starts are a concern. Rated insulation voltage is 800 V, and maximum power loss is 37.5 W — a figure to factor into enclosure thermal calculations if the panel is tightly packed.