Designed to charge up to a maximum of two 12 volt batteries in seriesthis unit is ideally suited to the small motor workshop, service station or small fleet operation.Two rotary switches allow for the selection of five charge rates, at either 6 volts, 12 volts or 24 volts .The output is fuse protected against reverse polarity by a standard automotiveblade fuse and overload protected by a manually resettable circuit breaker .The input is also fuse protected. Complies with SABS IEC 335-2-29 Thermal overload protection.Automatic circuit breaker protection. Easy to follow instructions. Robust ,epoxy coated steel cabinet. Two year warranty. Code Ref .No.HAW12/20G PRO30