MCCB with starter-protection duty and high interrupting capacity
Its interrupting capacity reaches 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V — figures that cover most industrial fault-current scenarios without cascading upstream. The overcurrent release is an ETU310M electronic trip unit, and an undervoltage release (UVR) is integrated.
The 63 A rating holds flat from 40 °C through 50 °C; derating begins at 55 °C (60.48 A) and drops to 56.7 A at 70 °C. For a panel that runs warm — say a motor control center at 55 °C ambient — the breaker still carries 60.48 A, so a 63 A feeder or motor circuit is safe. The 330 kA interrupting capacity at 240 V is the headline number, but the 242 kA at 415 V is the one that governs most 400 V-class industrial distribution.
Panel integration and dimensions
The 105 mm width fits a 3-pole MCCB footprint; adjacent breakers or contactors in a multi-unit lineup need that pitch respected.
Environmental and endurance limits
The latching endurance is rated at 20,000 operations — this is the mechanical life under no-load conditions, not the electrical endurance under fault.