The PET20BK25MR is a 25A, 277V AC, 1P, NEMA 3R, molded-case circuit breaker manufactured by Pro-Power. This circuit breaker is designed to protect against overload and short-circuit conditions and features a thermoplastic enclosure and a compact, lightweight design. It is UL Listed and CSA Certified, making it ideal for residential and commercial installations. The device also features manual and automatic reset options, push-to-test capability, and lockout capability.