Switching Relays

Product DescriptionThe Marley Engineered Products 4520-0010-000 Fan Delay Relay is designed to enhance the performance of HVAC systems by ensuring efficient and smooth fan operation. This component is essential for controlling the operation of fans within the system. Adjustable delay settings allow for precise...

'-Molded terminal numbers and circuit diagram on top of relay provide easy identification for wiring and checking system operation.Untaped coil assures cooler operation.Laminated magnet construction for higher efficiency.Base designed for easy replacement of competitive relays.Double quick-connect coil terminals.Plug compatible with Steveco 90-340 and Mars...

Product DescriptionThe Argo AZ-3 Az-3 Same As Azv-243-40 is a three-zone relay for zone valves with a 40VA transformer. Three-zone relay system Includes 40VA transformer Suitable for zone valves Product HighlightsThis relay system offers a reliable solution for controlling multiple zone valves. Ideal for...

Product DescriptionThe Taco SR504-EXP-4 is a versatile and expandable 4-zone switching relay designed for optimal performance in hydronic heating and cooling systems. Engineered by Taco, this relay facilitates easy and efficient management of multiple heating zones, enhancing system functionality. Integrates with up-to 20 zones...

Product DescriptionThe Resideo R8225A1017 is a 24V fan relay designed for SPDT (Single Pole Double Throw) switching, suitable for refrigeration and air conditioning equipment, appliances, and similar applications. The relay is engineered to provide both general purpose and heavy duty switching. Efficient operation with...

Product DescriptionFunctional Devices, Inc. presents the RIBD2421C Time Delay Pilot Relay, a reliable solution for industrial automation and power distribution needs. This Single Pole Double Throw (SPDT) relay is encased in a durable and protective enclosure, making it fit for tough environments. 10 Amp...

Product DescriptionTaco SR502-4 is a 2-zone switching relay designed to optimize your HVAC systems efficiency and operation. It features dual zones with priority control, making it an essential component for multi-zone heating systems. Expandable up to 120 zones with additional control panels. Includes external...

Product DescriptionThe Taco SR501-4 1-Zone Switching Relay offers dependable performance for controlling one zone in heating or cooling installations. Engineered with the professional in mind, this device integrates seamlessly with both conventional and programmable thermostats. Universal compatibility with 24V, 120V, and 240V systems. Fuse...

Product DescriptionThe Honeywell HPSR104 is a four zone switching relay designed for hydronic zoning applications. This relay allows for efficient management of multiple heating zones, ensuring both comfort and energy savings. Installation is simplified with reduced wiring requirements, making it suitable for HVAC professionals....

Product DescriptionThe Argo ARM-6P 6 Zone Expandable Switching Relay is designed for efficient zoning applications. It includes many features that ensure reliability and optimal performance. Electronic Fuse - Auto reset Double-sided printed circuit board construction - 100 percent factory tested for reliability 5-second Time...

Product DescriptionThe Taco SR506-EXP-4 is a 6 Zone Expandable Switching Relay designed for efficient HVAC system management. This Relay optimizes boiler operations by allowing the expansion up to 20 zones with additional PowerPort and Add-on Power Control modules, making it highly suitable for large...

Product DescriptionThe Modine Fan Relay (5H0730350000) is essential for controlling fan operations in HVAC systems. This compact relay effectively manages the power supply to the fan motor, enabling precise air circulation and temperature management in industrial settings. Designed for easy installation and wiring. Durable...

Product DescriptionThe Enviro-tec 2 Pole 30A 24V N/O Fan Relay, model PE-08-0004, is engineered to control fans and electrical loads in both industrial and commercial environments. This high-performance relay facilitates efficient operation with its robust design and technology. Designed for single-phase load switching with...

Product DescriptionThe White-Rodgers 90-130 Fan Control Center is designed to optimize HVAC systems. This control center enables effective fan management in various environments. It supports primary voltages of 120, 208, and 240 VAC, while providing a reliable secondary voltage of twenty-four VAC. Featuring a...

Product DescriptionTaco Four Zone Switching Relay (SR504) allows for effective power management with four independently controlled zones. Designed for industrial applications, the SR504 ensures consistent and efficient electrical load control. Four switching zones Programmable priority settings Solid-state switching technology Product HighlightsThis relay is equipped...

Product DescriptionThe Taco SR501-OR-4 is a professional-grade switching relay designed to optimize the performance of hydronic heating systems through precise temperature regulation. This reliable tool ensures efficient energy management, even in outdoor installations. Outdoor installation capability enhances versatility. Advanced control features activate or deactivate...

Product DescriptionThe Taco SR501-EXP-4 is a versatile switching relay designed for single-zone applications. It features a robust design that can replace any brand's equipment without necessitating rewiring, making it a top choice for simplifying installation projects. Compatible with both conventional and programmable thermostats. Incorporates...