Diameter: 5-1/4" Depth: 2-5/8" Polycarbonate Body with Brass Terminals Ignition Protected For use with 6 to 32 Volt Marine Electrical Systems Capacity - 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent Terminal Stud Size: 5/16" When used with Non-Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running. Specifications: AFD: Yes Lockable: No Positions: 2 Continuous Amperage: 380a Box Dimensions: 4"H x 4"W x 8"L WT: 2.25 lbs UPC: 085226021558 Quick Guide (pdf)