Four poles, line-protection design, with the ETU850 electronic trip unit that supports communication and additional measurement functions. Breaking capacity reaches 187 kA at 240 V AC and 121 kA at 415/440 V, dropping to 3 kA at 690 V; that SCCR headroom covers most industrial service-entrance and feeder applications without cascading upstream.
The ETU850 release is field-configurable, and the communication port allows integration with higher-level monitoring systems.
At 690 V the 3 kA rating is lower, but that voltage level is uncommon in standard industrial distribution; the 121 kA at 415 V covers the typical European 400 V feeder. The ETU850 electronic trip unit provides adjustable long-time, short-time, instantaneous, and ground-fault protection (though this variant is shipped without ground-fault monitoring — the '0AA0' suffix indicates no ground-fault module).