The Siemens 3VA1463-5EF32-0BH0 is a SENTRON molded case circuit breaker built for line protection duty — 3-pole, rated a full 630 A at 40 °C ambient, and carrying a 187 kA interrupting rating at 240 V. That kind of breaking capacity means it'll clear a hard fault without the arc flash propagating upstream, which is what you want when you're coordinating a main or feeder in a distribution panel.
If your enclosure runs hot, you'll want to check the thermal curve against your actual load rather than just the nameplate. Breaking capacity drops as voltage climbs: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 11.9 kA at 690 V.
Mounting and fit
The breaker measures 248 mm tall, 138 mm wide, and 110 mm deep. The storage range is wider because the breaker isn't dissipating heat when it's sitting on a shelf. If you're commissioning in a cold plant, the -25 °C lower limit is fine for most indoor industrial environments.
The base switch assembly is order code 3VA14635EF320AA0. If you're BOM-freezing a panel design, note that the auxiliary switch config (2 aux + 1 trip alarm) and the UVR are factory-integrated — you're not adding those in the field on this variant.