3-pole unit rated 63 A at 40 °C, rated insulation voltage 800 V. The breaking capacity tells you where this breaker can live: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 500 V and 690 V.
At 55 °C it drops to 62 A, at 60 °C to 61 A, at 65 °C to 60 A, and at 70 °C to 58 A. That's a gentle slope; you lose only 5 A over a 30 °C rise. If your panel ambient runs 60 °C, you can still pull 61 A continuous without nuisance tripping, which is better than many older frame designs that shed 15% by 50 °C. That's standard industrial — fine for unheated warehouses and roof-top enclosures in most climates.
Bolts directly to mounting plate.
What the accessories mean for your wiring
The factory-fitted shunt trip (STL) lets you trip the breaker remotely from an E-stop, a safety relay, or a PLC digital output — it's a voltage-triggered release, so you need a control voltage source at the breaker. The two auxiliary switches (HQ) provide normally-open / normally-closed status contacts for the panel PLC or indicator lamps.