Siemens 3VA2463-6JP32-0HL0 — 630 A SENTRON MCCB, Line Protection, Current Lifecycle
The Siemens 3VA2463-6JP32-0HL0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous current, 3-pole, designed for line protection. It carries a 242 kA breaking capacity at 240 V and 187 kA at 415 V, with a derated 9 kA at 690 V. The adjustable thermal-magnetic trip unit covers a 945 A minimum to 5 670 A maximum range, letting you tune the instantaneous pickup to the fault current your downstream gear can withstand. The 110 mm depth and 138 mm width fit standard panel cutouts, and the communication function (likely PROFIBUS or PROFINET via an optional module) allows remote monitoring of breaker status and load current — useful for a maintenance planner tracking a 630 A feeder without walking the line.
Thermal Derating and Power Loss
At 40 °C ambient the breaker carries its full 630 A. Above that, derate linearly: 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. If your panel ambient runs 50 °C, plan for 570 A maximum — the 630 A nameplate only holds below 40 °C. Maximum power loss is 162 W at rated load, which matters for enclosure heat rise calculations in a sealed cabinet.
Auxiliary and Release Configuration
Factory-fitted with 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type), plus a shunt trip (STL) release. The trip indicator and voltage trigger are present; undervoltage release is not included. Ground-fault monitoring is absent — if you need GF protection, this variant is not it.