It carries a breaking capacity of 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 53 kA at 690 V — covering the full low-voltage distribution range from 240 V through 690 V without derating the interrupt rating at the lower voltages.
The ETU340 release provides adjustable N-conductor protection (OFF or 100% of phase current), useful for 4-wire systems where you need to protect the neutral against harmonics or unbalanced loads. The 20 000 mechanical endurance cycles reflect a robust mechanism suited for switching applications where the breaker doubles as a disconnect under load.
Deployment context
This MCCB mounts into a standard panel or enclosure via the SENTRON 3VA mounting base; the 86 mm depth, 140 mm width, and 181 mm height fit within the typical 200 mm deep enclosure used for commercial and industrial distribution boards. Power loss is 4 W maximum, so heat dissipation in a dense panel is manageable.