Three poles, line-protection version, fitted with the ETU330 electronic trip unit. Breaking capacity hits 440 kA at 240 V, 330 kA at 415/440 V, and still holds 53 kA at 690 V, so it handles high-fault utility feeds without cascading upstream.
Trip unit and selectivity
The ETU330 electronic release gives adjustable long-time delay (tr) from 0.5 s to 17 s, letting you coordinate downstream breakers for selective tripping — critical on a distribution panel where you want the branch breaker to clear before the main.
Power loss is only 1.2 W maximum, so heat buildup in a dense cabinet is minimal. An optional motor drive can be added for remote tripping or re-closing.