Part identification and lifecycle status
The S201DC-K25 is a 1-pole miniature circuit breaker with a K-trip characteristic, rated 25 A at 60 V DC/AC. It is classified as a BCPD (Branch Circuit Protective Device).
What the ratings mean for fit
The K-curve trips between 8-12x rated current, designed for motor and inductive loads where higher inrush is expected. At 25 A, it protects a branch circuit feeding a small motor or transformer bank on a DC or single-phase AC supply up to 60 V.