Relay And Duplex Controllers

Marsh Bellofram Corporation introduces its ARM Series of rugged, high-reliable alternating relays and duplex controllers, designed to ensure equal runtime of multiple load installations in pump sequencing, level control, lift station and motor protection applications. These microprocessor-based controllers evenly distribute runtime by alternating designated lead and lag loads between two pump sequences. They feature an inrush delay, which prevents both loads from energizing simultaneously. Additional features include an integral alarm output, five UL913 intrinsically safe low voltage/low current control switch inputs, a control switch fault detection and a test-and-clear switch.