The S201-C40 is a 1-pole miniature circuit breaker rated 40 A at 277 VAC, with a Trip Curve C characteristic and a 6 kA interrupting rating. The 40 A continuous current handles branch circuits feeding resistive or moderate motor loads up to that ampacity — think lighting banks, small HVAC units, or distribution subfeeds. DIN-rail mounting snaps directly into standard 35 mm rail in any enclosure or subpanel.
Panel Integration — DIN-Rail Footprint, Single-Pole Width
Single-pole width (roughly 18 mm per module) means it occupies one position in a distribution board. The thermal-magnetic trip mechanism is self-contained — no external shunt or undervoltage release required for basic overcurrent protection. Wire termination accepts copper conductors up to the breaker's rated capacity; torque settings per the nameplate.