It's a 3-pole unit with an undervoltage release (UVR) fitted, no auxiliary contacts, and no communication module — a straightforward power distribution breaker for panels where you need remote trip capability via undervoltage but don't need status feedback or network integration.
This breaker delivers 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. At 240 V it handles virtually any utility fault; at 415 V it still clears 154 kA, which covers most industrial secondary substations.
Thermal derating — when the 50 A rating holds and when it doesn't
At 55 °C it derates to 48 A, at 60 °C to 47 A, at 65 °C to 46 A, and at 70 °C to 45 A.
The undervoltage release (UVR) is the 3VA9608-0BB25 auxiliary trip; if you're replacing an older unit, confirm the UVR coil voltage matches your control circuit.