4 A Curve C — what the trip curve means for your load
The S202M-C4: At 277 VAC the interrupting capacity is 6 kA — enough for most commercial lighting panels and industrial control transformers. On the DC side it's rated 10 kA at 125 VDC, which covers control power supplies and battery-backed circuits.
Panel fit and DIN-rail integration
Snaps onto standard DIN rail — same footprint as every other S200M 2-pole breaker. Two poles mean it switches both line conductors in a single-phase circuit or both legs in a DC system. The neutral is not switched unless you add a separate 1-pole unit — this breaker is for line-side protection only.
Lifecycle and sourcing — still a current production part
For a line-down replacement or a BOM freeze, the S202M-C4 is a straight drop-in for any S200M 2-pole slot. If you need a higher amp rating, the S202M-C10, S202M-C16, or S202M-C20 share the same physical footprint and interrupting ratings.