Breaking capacity and what it means for your fault-current study
This MCCB delivers 330 kA interrupting capacity at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.
Trip unit and protection curve
The ETU850 is an electronic trip unit with adjustable protection parameters — it supports LSIG (long-time, short-time, instantaneous, ground-fault) functions, though this variant ships without ground-fault monitoring. The trip indicator is not fitted on this order code, so visual trip indication is not available at the breaker face.
Thermal performance across ambient temperature
Maximum power loss is 25.5 W at rated load.
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard 3-pole MCCB footprint for the 3VA2 frame. The unit accepts screw-type lug connections; no special adapter plate needed for most switchboard cutouts.