CBW58-HL4-20A-5X with Fuse is an Omnifuse Class B surface-mount circuit breaker manufactured by Optifuse. It features a 20 amp fuse, thermal fuse, maximum current rating of 1kA, input voltage ratings of 32/50V,125/250V, and measures 35x14.4x31mm. It is designed to protect circuits from overcurrent, as well as short circuits and thermal overloads. It is rated IPS, ITC, HACR, and UL 1077.