Profile: Harmer and Simmons Ltd specializes in batteries and industrial power equipment. Our product line includes solar inverters, LED power supplies, power controllers, rectifiers & chargers and DC telecom systems. Our MPi2000C series is a self contained compact systems providing important space savings due to the high power density of the SM2000 rectifier and a compact system design. The performance of the MPi2000C-Series, with SM2000 rectifiers, provides an ideal solution for indoor or outdoor systems even under the most stringent environment. Our protect RCS DC system (SPRe/TPRe) has been developed and designed to provide high reliability power supply and battery charging capability. The protect RCS DC system is a thyristor-controlled rectifier suitable for charging nickel-cadmium or lead-acid batteries while supplying DC loads. It can also be used without batteries as direct power supplies.