MFL205 fuse locator The Megger MFL205 is an easy-to-use instrument designed to identify a single fuse or circuit breaker on a fuse board or in a consumer unit. The MFL205 transmitter can be connected directly to a circuit using the supplied alligator clips or (with appropriate adapters) to a mains socket or light socket of the power circuit that protects the fuse to be identified or the circuit breaker. Benefits: