The SENTRON 3VA2063-5HN32-0CC0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That kind of short-circuit headroom means it clears high-fault events without cascading upstream, which matters in industrial switchboards where the available fault current is stiff.
What the ratings mean for fit
The 63 A frame is line-protection rated, not motor-protection — the design is for feeder and distribution circuits, not overload curves tuned to induction-motor starts. The undervoltage release (UVR) built in lets you drop the breaker on loss of control voltage, which is standard for emergency-stop chains or undervoltage safety schemes. Operating temperature spans -25 °C to 70 °C, storage -40 °C to 80 °C, so it handles unheated enclosures and nacelle environments without a heater.
Panel integration notes
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep (–). That is a standard 3-pole MCCB footprint for a 63 A frame — it fits common DIN-rail or panel-mount cutouts without surprises. Power loss is 7.9 W maximum, so heat dissipation in a sealed enclosure is manageable; no forced cooling required for a single unit. The 2 HQ auxiliary switches give status feedback for PLC or SCADA inputs.