It is designed for line protection in distribution panels and motor control centers, with a breaking capacity of 187 kA at 240 V AC, derating to 121 kA at 415 V and 3.7 kA at 690 V.
Breaking capacity and trip unit
At 415 V the rating is 121 kA, and at 690 V it drops to 3.7 kA, reflecting the physics of arc extinction at higher voltages. The ETU850 electronic trip unit allows field-adjustable long-time, short-time, and instantaneous pickup settings, plus ground-fault detection when paired with an external sensor (this unit ships without the ground-fault monitoring module).
This simplifies panel design: you can populate adjacent breakers at full rating without calculating temperature de-rates, provided the enclosure ambient stays within that band.
Physical integration
Dimensions are 181 mm height, 140 mm width, 86 mm depth. Front-face protection is IP40.