The ETU850 electronic trip unit gives you an adjustable overload protection window from 95 A up to 756 A — so this single frame covers a wide range of motor and feeder applications without swapping hardware. The interrupting ratings are the real story here: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. Designed for line protection per the product designation, this MCCB includes a communication function for integration into higher-level monitoring systems.
Thermal performance and panel integration
The 140 mm width is the critical dimension for panel layout: it occupies three standard 45 mm-wide module spaces on the DIN rail. Maximum power loss is 4 W — negligible for enclosure thermal calculations, but worth confirming if you are packing multiple breakers in a sealed cabinet.