The Siemens 3VA1163-5EF32-0BH0 is a SENTRON 3VA1 molded case circuit breaker for line protection in distribution panels. It carries 63 A continuously at 40 °C, derating to 58 A at 70 °C — so for a 60 A continuous load in a warm enclosure, this frame holds without nuisance tripping. The 3-pole design with an undervoltage release (UVR) means it drops the load on loss of control voltage, typical for safety isolation on conveyors or HVAC compressor banks.
Breaking capacity & selectivity
Rated short-circuit breaking capacity hits 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500/690 V. That 187 kA figure at 240 V means it can interrupt faults up to that level without upstream fuses — useful for high-fault service-entrance panels. Rated insulation voltage is 800 V, so it's rated for 480/600 V class systems with margin.
Auxiliary switch & undervoltage release
Comes with 2 auxiliary switches plus a trip alarm switch (HQ) and an undervoltage release (UVR). Verify coil voltage rating against your control supply before wiring.
Thermal derating & power loss
63 A continuous at 40 °C ambient, flat to 50 °C, then steps down: 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, 58 A at 70 °C. Maximum power loss is 19.8 W — relevant for panel heat budget in a sealed enclosure. Operating range -25 to 70 °C; storage from -40 to 80 °C. Mount with adequate ventilation around the arc chutes.
Panel fit & dimensions
Footprint: 130 mm high, 76.2 mm wide, 70 mm deep — fits standard 3-pole MCCB cutout in a SENTRON or third-party distribution board. No communication function on this variant; it's a straight thermal-magnetic breaker with UVR and aux switches. The trip indicator confirms the breaker has opened on fault, not manually.