The Crabtree 40A Curve B MCB Circuit Breaker Starbreaker 61/B40 is a high-quality manual reset circuit breaker suitable for wall mounting in interior rooms. With a maximum amperage of 40A and a tripping characteristic of Type B, this over- and short-circuit protection device is designed for electrical wiring applications. Featuring a trip indicator and made from ABS/plastic and plastic materials, this supplementary protector from Crabtree is a reliable choice for providing overload and short circuit protection in any room. With a voltage range of 201-250V and an instantaneous break time, this circuit breaker offers peace of mind in electrical systems.