What the ratings mean for fit
The Siemens 3VA2463-5JP32-0DL0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a 3-pole configuration designed for line protection in industrial distribution panels. The 187 kA breaking capacity at 240 V AC means it can safely interrupt very high fault currents typical of transformer-fed busways or large motor control centers without upstream cascading. At 415 V and 440 V it still holds 121 kA, dropping to 75.6 kA at 500 V and 9 kA at 690 V — so the voltage class of your system directly governs the available short-circuit protection. The unit includes a built-in undervoltage release and a communication function for integration with higher-level monitoring systems.
Thermal derating and panel integration
The continuous current rating is temperature-dependent: 630 A at 40 °C, derating to 450 A at 70 °C. If the breaker sits in a warm enclosure or near other heat sources, use the 70 °C figure for sizing. The 110 mm depth, 138 mm width, and 248 mm height fit standard MCCB mounting footprints in switchgear; the 164.5 W maximum power loss must be factored into enclosure ventilation calculations.