Its TM220 thermal-magnetic release gives an overload pickup adjustable from 280 A to 400 A (Ir) and a fixed short-circuit pickup at 10 × In (Ii = 4000 A).
The 261 × 208 × 170 mm package fits standard IEC panel-mount cutouts for frame-400 breakers. The nut keeper kit (included) holds the mounting nuts captive during installation — a small detail that saves time when you are working alone inside a live panel. The N conductor is unprotected on this variant, so if you need a fully protected neutral, this is not the order code for that scheme.
RoHS compliant since 01 June 2012.