The CBi QFL-3(13)D is a three-phase DIN rail-mounted surge protector rated 275V with a 10kA discharge capacity, designed to safeguard electrical installations against transient overvoltages from power surges and lightning strikes. It employs metal oxide varistor (MOV) technology for voltage clamping and includes a thermal disconnect device to prevent thermal runaway, with LED indication for SPD condition monitoring. Ideal for use as a backup to an MCB in panel boards, distribution boards, and industrial electrical systems.
