Multiple-pump applications often require balanced runtimes and redundancy. Littelfuse SymCom provides pump controllers (both intrinsically safe and non-IS) that are designed to handle multiple pump applications. SymCom SSAC also provides alternating relays which are designed to balance the run time between two independent loads, typical in many pumping and compressor applications. By balancing the runtimes, redundant equipment is equally exercised to provide greater system reliability.