The CHALLENGER C240 40 Amp 2 Pole 120/240V 10K Circuit Breaker is a reliable and efficient electrical component suitable for both interior and exterior walls. With a maximum amperage of 40A and thermal overload protection, this circuit breaker provides safe and secure power distribution. The black plastic housing and plug-on neutral feature make it easy to install and maintain. Designed for AC current type and featuring a selective break time, this main breaker from Challenger is a essential component for any electrical system.