The Siemens 3VA2463-5HL32-0DB0 is a SENTRON 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with an ETU320 electronic trip unit. The 187 kA breaking capacity at 240 V and 121 kA at 415 V give it the headroom to handle high-fault scenarios typical of main feeders or large distribution panels — the 690 V rating of 9 kA tells you this is a line-protection device, not a motor-protection breaker, so verify your load type before specifying.
Breaking capacity drops from 187 kA at 240 V to 121 kA at 415 V, then 55 kA at 440 V, 36 kA at 500 V, and 9 kA at 690 V — that steep curve means you size the SCCR for your actual line voltage, not the best-case number. Continuous current derates from 630 A at 40 °C to 520 A at 70 °C; at 70 °C ambient you lose roughly 17 % of the headline rating, so account for enclosure heat rise in the panel schedule.
Integration and form factor
The 3VA2463-5HL32-0DB0 measures 138 mm wide, 248 mm high, and 110 mm deep. IP40 on the front protects against tools and small wires.
Trip unit and adjustability
The ETU320 electronic trip unit offers adjustable long-time pickup (Ir) from 0.5 to 1.0 × Iu, with a configurable delay (tr) between 0.5 and 12 seconds. The 630 A maximum Ir setting matches the breaker's rated continuous current.