The Siemens SENTRON 3VA2063-5HL32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with a rated insulation voltage of 800 V. Its interrupting capacity is 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — so at typical 400 V distribution voltages it clears faults up to 121 kA without the arc flashing upstream.
Thermal performance and derating
That simplifies panel design: you don't have to oversize the frame for a warm enclosure.
Built-in undervoltage release
That's a common requirement for motor circuits where you want automatic disconnection on brownout or phase loss, and it saves buying a separate shunt-trip module.
