It carries a continuous current rating of 125 A at 40 °C, with thermal derating to 114 A at 70 °C, so the full 125 A is available at typical panel ambient temperatures below 55 °C. The interrupting capacity reaches 121 kA at 240 V AC and 75.6 kA at 415 V AC, giving substantial fault-clearing headroom for high-available-fault-current installations like transformer secondaries or large motor control centers. That means it can signal its status to a PLC or annunciator without a separate add-on module.
The breaker occupies a 76.2 mm wide by 130 mm tall by 70 mm deep footprint — a standard 3-pole MCCB width for this current class. The UVR coil draws its signal from the line side; verify the control voltage matches the panel's auxiliary supply before commissioning.