The Crabtree 40 Amp Curve B MCB Circuit Breaker Starbreaker 61/B40 in black clip is a Type B circuit breaker designed for wall mounting in interior spaces. With a maximum amperage of 40A and operating temperature of 55°C, this analog/mechanical control style breaker provides instantaneous tripping characteristics. Made from ABS/plastic material, this circuit breaker from Crabtree is suitable for any room and features a screw terminal electrical connection for easy installation. Ideal for electrical wiring applications, this circuit breaker offers reliable protection in a compact design.