Alternating Relays and Controls


Marsh Bellofram alternating relays and controllers are designed to ensure equal run time on dual, triple and quadruple load installations in pump sequencing, level control, lift station, motor protection and other industrial applications.


ARM Series Integrated Duplex Controller

ARM Series Integrated Duplex Controller

The ARM Series Integrated Duplex Controller with Intrinsically Safe Inputs from the ATC Diversified Electronics division of Marsh Bellofram is a family of rugged, high-reliability alternating relays and duplex controllers, designed to ensure equal runtime of multiple load installations in […]

ARM Series Alternating Triplex Quadraplex Controllers

ARM Series Alternating Triplex Quadraplex Controllers

ARM Series Alternating Triplex Quadraplex Controllers from the ATC Diversified Electronics division of Marsh Bellofram is a family of rugged, high-reliability alternating relays and triplex and quadraplex controllers, designed to ensure equal runtime of multiple load installations in pump sequencing, […]