
Lochinvar & A.O. Smith 100208502 Relay
The Lochinvar & A.O. Smith 100208502 Relay is a high-performance 1.5HP pump relay kit engineered for precise load management in commercial and residential hydronic systems. As a critical OEM replacement part, this heavy-duty relay ensures seamless electrical sequencing for 1.5 horsepower circulation pumps, preventing motor lag and protecting the integrated control board from high-amperage spikes. This component is widely utilized across the Lochinvar FTXL and Copper-Fin2 series, as well as A.O. Smith Cyclone MXi and BTH models, where maintaining consistent flow rates is vital for thermal efficiency and heat exchanger longevity.
Designed for professional-grade reliability, the 100208502 relay serves as a robust pump motor controller that handles the inductive load requirements of high-capacity circulators. Its simplified wiring interface allows for rapid field installation, reducing downtime during critical boiler maintenance. By isolating the pump's power draw from the sensitive logic circuits, this 1.5hp pump relay stabilizes system operation and mitigates the risk of nuisance intermittent failures in commercial water heaters and hydronic heating systems.
Key Benefits- High Load Capacity: Specifically rated as a 1.5HP relay to handle the startup and running amps of large circulation pumps without contact pitting.
- Universal Compatibility: Serves as a direct Lochinvar replacement part and A.O. Smith OEM relay for simplified inventory and broad application.
- System Protection: Effectively isolates high-voltage pump circuits from low-voltage controls, safeguarding boiler control boards from electrical interference.
- Optimized Thermal Performance: Ensures consistent pump cycling to maintain optimal GPM flow through heat exchangers, preventing overheating.
What equipment is compatible with the 100208502 pump relay?
This relay is a standard component for Lochinvar FTXL (FTX400-FTX1000), Copper-Fin2, and various A.O. Smith commercial series including Cyclone BTH and MXi models.
Can this relay control a pump larger than 1.5 horsepower?
No, this unit is strictly rated for 1.5HP pump motors. Using it for higher horsepower applications may lead to premature contact failure and system instability.
Is this a direct OEM replacement part?
Yes, the 100208502 is an authentic Lochinvar and A.O. Smith OEM part, ensuring factory-spec electrical performance and fitment without the need for field modifications.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $90.59
-65%$90.59
$31.71Lochinvar & A.O. Smith 100208502 Relay
The Lochinvar & A.O. Smith 100208502 Relay is a high-performance 1.5HP pump relay kit engineered for precise load management in commercial and residential hydronic systems. As a critical OEM replacement part, this heavy-duty relay ensures seamless electrical sequencing for 1.5 horsepower circulation pumps, preventing motor lag and protecting the integrated control board from high-amperage spikes. This component is widely utilized across the Lochinvar FTXL and Copper-Fin2 series, as well as A.O. Smith Cyclone MXi and BTH models, where maintaining consistent flow rates is vital for thermal efficiency and heat exchanger longevity.
Designed for professional-grade reliability, the 100208502 relay serves as a robust pump motor controller that handles the inductive load requirements of high-capacity circulators. Its simplified wiring interface allows for rapid field installation, reducing downtime during critical boiler maintenance. By isolating the pump's power draw from the sensitive logic circuits, this 1.5hp pump relay stabilizes system operation and mitigates the risk of nuisance intermittent failures in commercial water heaters and hydronic heating systems.
Key Benefits- High Load Capacity: Specifically rated as a 1.5HP relay to handle the startup and running amps of large circulation pumps without contact pitting.
- Universal Compatibility: Serves as a direct Lochinvar replacement part and A.O. Smith OEM relay for simplified inventory and broad application.
- System Protection: Effectively isolates high-voltage pump circuits from low-voltage controls, safeguarding boiler control boards from electrical interference.
- Optimized Thermal Performance: Ensures consistent pump cycling to maintain optimal GPM flow through heat exchangers, preventing overheating.
What equipment is compatible with the 100208502 pump relay?
This relay is a standard component for Lochinvar FTXL (FTX400-FTX1000), Copper-Fin2, and various A.O. Smith commercial series including Cyclone BTH and MXi models.
Can this relay control a pump larger than 1.5 horsepower?
No, this unit is strictly rated for 1.5HP pump motors. Using it for higher horsepower applications may lead to premature contact failure and system instability.
Is this a direct OEM replacement part?
Yes, the 100208502 is an authentic Lochinvar and A.O. Smith OEM part, ensuring factory-spec electrical performance and fitment without the need for field modifications.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Product Information
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Description
The Lochinvar & A.O. Smith 100208502 Relay is a high-performance 1.5HP pump relay kit engineered for precise load management in commercial and residential hydronic systems. As a critical OEM replacement part, this heavy-duty relay ensures seamless electrical sequencing for 1.5 horsepower circulation pumps, preventing motor lag and protecting the integrated control board from high-amperage spikes. This component is widely utilized across the Lochinvar FTXL and Copper-Fin2 series, as well as A.O. Smith Cyclone MXi and BTH models, where maintaining consistent flow rates is vital for thermal efficiency and heat exchanger longevity.
Designed for professional-grade reliability, the 100208502 relay serves as a robust pump motor controller that handles the inductive load requirements of high-capacity circulators. Its simplified wiring interface allows for rapid field installation, reducing downtime during critical boiler maintenance. By isolating the pump's power draw from the sensitive logic circuits, this 1.5hp pump relay stabilizes system operation and mitigates the risk of nuisance intermittent failures in commercial water heaters and hydronic heating systems.
Key Benefits- High Load Capacity: Specifically rated as a 1.5HP relay to handle the startup and running amps of large circulation pumps without contact pitting.
- Universal Compatibility: Serves as a direct Lochinvar replacement part and A.O. Smith OEM relay for simplified inventory and broad application.
- System Protection: Effectively isolates high-voltage pump circuits from low-voltage controls, safeguarding boiler control boards from electrical interference.
- Optimized Thermal Performance: Ensures consistent pump cycling to maintain optimal GPM flow through heat exchangers, preventing overheating.
What equipment is compatible with the 100208502 pump relay?
This relay is a standard component for Lochinvar FTXL (FTX400-FTX1000), Copper-Fin2, and various A.O. Smith commercial series including Cyclone BTH and MXi models.
Can this relay control a pump larger than 1.5 horsepower?
No, this unit is strictly rated for 1.5HP pump motors. Using it for higher horsepower applications may lead to premature contact failure and system instability.
Is this a direct OEM replacement part?
Yes, the 100208502 is an authentic Lochinvar and A.O. Smith OEM part, ensuring factory-spec electrical performance and fitment without the need for field modifications.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












