What the ratings mean for fit
The Siemens SENTRON 3VA2463-7HL32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a breaking capacity of 330 kA at 240 V AC and 242 kA at 415 V AC. That 330 kA at 240 V means it can safely interrupt a fault current up to that level without upstream cascading — critical for high-fault-capacity installations like transformer secondaries or large motor control centers. The 630 A frame is sized for heavy feeder or main breaker duty in a 400 V class distribution panel. The continuous current rating is temperature-dependent: 630 A at 40 °C derates to 520 A at 70 °C. If the breaker sits in a warm enclosure or near other heat sources, use the 70 °C column for sizing — the 630 A number only holds at 40 °C ambient. Physical footprint is 138 mm wide, 248 mm tall, 110 mm deep — a standard 3-pole MCCB form factor that fits most DIN-rail or panel-mount enclosures sized for SENTRON 3VA2 frames. The 162 W maximum power loss at full load means the enclosure must dissipate that heat; factor it into your thermal budget.
Built-in auxiliary and trip functions
The breaker ships with 2 auxiliary switches plus 1 trip alarm switch (HQ design), and a shunt trip release (STL) for remote tripping. The trip indicator and voltage trigger are standard. No undervoltage release or ground-fault monitoring on this variant — those are separate order code options if needed.