DTK-120S20A 
                The DTK-120S20A  ‘Critical Load’ surge protector from DITEK is a true multi-stage series  hybrid design which provides the best filtering and lowest clamp levels  in its class. Designed for critical 120V circuits, it meets both  government and military specs for fire panel applications. A user  replaceable fuse means less down time and longer service life. 120V,  20A series connected surge protector.  | 
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