A range of four power units with a fixed 13.8V output ideally suited for powering CB radios communications transceivers & other devices that require a 13.8V supply. The power supplies are available in 3A 5A 7A & 10A versions 50 duty cycle rated output current. All four power supply units are finished in a smart black steel enclosure with illuminated rocker-type onoff switch & two binding posts black & red for the 13.8V output. A mains protection fuse is housed in a fuse holder on the rear panel. The power supplies have short-term overload & short-circuit protection to guard against momentary accidental misconnection but the units can be damaged by prolonged abuse. Please note these power supplies are designed for use in well ventilated areas. Specifications Input 240 Vac 50 Hz Output voltage 13.8 V Output current Type Continuous 50 Duty Surge Cycle 3A 2A3A5A5A 3A5A7A 7A 5A7A9A 10A7A10A12 A Overall dims.3A 141 x 141 x 82mm 5A 141 x 141 x 82mm 7A 187 x 181 x 113mm 10A187 x 181 x 113mm Weight 3A 1.95kg 5A 2.9kg 7A 3.8kg 10A5.25kg