The Schneider Electric A9N1P04CIN is a 1-pole miniature circuit breaker from the Acti9 xC60 family, rated 4 A with a C-curve trip characteristic. At 12–48 V DC the breaking capacity rises to 15 kA, and at 60 V DC it drops to 6 kA, which matters if you're using it in a DC control circuit. The toggle gives local ON/OFF indication. Thermal-magnetic trip technology covers both overload (thermal bimetal) and short-circuit (solenoid) protection in one unit. The part is certified to IS/IEC 60947-2, the standard for industrial circuit breakers — not the household IEC 60898. That means it's rated for isolation and carries a utilisation category A, so it's intended for distribution duty where selectivity with upstream breakers is designed in, not for direct motor starting.
Integration into a panel
Mounts via clip-on to 35 mm DIN rail. The white colour matches the rest of the Acti9 modular range for a clean panel layout.