It is designed for DIN rail mounting in distribution panels and industrial control enclosures, protecting branch circuits against overloads and short circuits. Rated at 480Y/277 VAC with a 10 kA interrupting capacity, the S283-K50W can safely clear fault currents up to 10,000 A at that voltage level, which covers most commercial and light industrial panelboard applications.
Unit depth is 68 mm, so it fits flush in a standard distribution board without protruding beyond the cover. Accepts conductor sizes from 18 AWG to 2 AWG. The thermal-magnetic trip mechanism provides both overload protection (thermal element) and short-circuit protection (magnetic element), with the K-curve magnetic trip set at 10–14× rated current — appropriate for motor starting inrush without nuisance tripping.