The Siemens SENTRON 3VA2163-5MN32-0CA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across its full operating temperature range from -25 °C to 70 °C. It's designed specifically for motor protection, with integrated phase failure detection and an undervoltage release built in. That UVR is the key differentiator here — it's not an add-on accessory; it's part of the base design, so if your safety circuit needs a drop-out on voltage loss, this breaker handles it without extra wiring.
Interrupting capacity — what the numbers mean for your panel
This breaker punches hard at low voltage: 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V. At 690 V it's down to 3.7 kA. That steep roll-off means you need to check your system voltage against the available fault current — at 480 V you've still got solid headroom for most industrial services, but at 690 V this isn't your high-fault breaker. The 63 A rating holds steady from 40 °C all the way to 70 °C, so no derating headache in a warm enclosure.
Physical fit and panel integration
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That's a standard 3-pole MCCB footprint for the SENTRON 3VA frame — it'll drop into most DIN-rail or panel-mount bases designed for this series. Max power dissipation is 6.5 W, so thermal management in a sealed enclosure is manageable. No trip indicator on this variant, and no communication module — it's a straight electromechanical breaker with the UVR as the only auxiliary release.