Breaking capacity at 415 V is 121 kA, dropping to 75.6 kA at 500 V and 5.2 kA at 690 V. That 121 kA figure at common 400 V-class distribution voltages means it handles high-fault-current scenarios without the upstream breaker having to clear — useful for main or sub-feed positions in an industrial panel.
Motor protection specific — phase failure and undervoltage
This breaker is designed specifically for motor protection, with built-in phase failure detection. If one phase drops out — say a blown fuse or a loose connection on the line side — the breaker trips, keeping the motor from single-phasing and burning up. That's a real-world failure mode out here in the grease, and having it integrated saves adding a separate phase-loss relay. The UVR drops the breaker if the supply voltage sags below a set threshold, which is standard for applications where a motor must not re-accelerate unexpectedly after a brownout.
Integration dimensions
Footprint is 105 mm wide, 181 mm tall, and 86 mm deep — that's about 4.13 by 7.13 by 3.39 inches. It's a standard 3-pole MCCB form factor for panel mounting, not DIN-rail snap-on; expect to bolt it to a mounting plate and land lug kits or bus bars.