
Lochinvar & A.O. Smith 100208490 Relay
The Lochinvar & A.O. Smith 100208490 Relay is a heavy-duty, 10AMP DPDT relay designed for high-reliability switching in commercial and residential HVACR systems. Engineering to handle demanding electrical loads, this double pole double throw relay provides precise control over dual circuits, making it a critical component for sequencing blowers, burners, or pumps. This genuine OEM replacement part is identical to industry part numbers RLY2051 and RLY2051K, ensuring drop-in compatibility with Lochinvar boilers and A.O. Smith water heaters. Operating with a 120V coil voltage, it provides the robust electromagnetic switching necessary to protect sensitive control boards from high-current draw. When troubleshooting intermittent ignition or fan failures, replacing a pitted or sticking relay with this HVAC control relay restores proper circuit isolation and system timing. This component is built to the exact technical specifications required for peak performance in mid-to-high efficiency thermal equipment.
Key Benefits:- Universal Compatibility: Direct cross-reference for parts RLY2051 and RLY2051K across multiple Lochinvar and A.O. Smith platforms.
- High Current Capacity: Rated for a 10AMP resistive load, providing a significant safety margin for standard HVAC inductive loads.
- DPDT Configuration: Allows for the simultaneous switching of two separate circuits from a single 120V control signal.
- Industrial Build Quality: Constructed with high-grade contact materials to resist arcing and extend the operational life of the switching cycle.
- What are the primary applications for the 100208490 relay? Professional technicians typically utilize this relay for controlling blower motors, high-limit safety circuits, and burner sequencing in commercial boilers and large-scale water heating units.
- Can I use this to replace a 3AMP or 5AMP relay? Yes, as long as the coil voltage (120V) and physical mounting match, the higher 10AMP rating provides superior durability and handles lower amp loads without issue.
- How do I verify if my current relay is failing? Check for continuity across the contacts when the coil is energized. If you notice carbon buildup (pitting) on the contacts or a humming sound without circuit engagement, it is time for a replacement.
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: $47.71
-65%$47.71
$16.70Lochinvar & A.O. Smith 100208490 Relay
The Lochinvar & A.O. Smith 100208490 Relay is a heavy-duty, 10AMP DPDT relay designed for high-reliability switching in commercial and residential HVACR systems. Engineering to handle demanding electrical loads, this double pole double throw relay provides precise control over dual circuits, making it a critical component for sequencing blowers, burners, or pumps. This genuine OEM replacement part is identical to industry part numbers RLY2051 and RLY2051K, ensuring drop-in compatibility with Lochinvar boilers and A.O. Smith water heaters. Operating with a 120V coil voltage, it provides the robust electromagnetic switching necessary to protect sensitive control boards from high-current draw. When troubleshooting intermittent ignition or fan failures, replacing a pitted or sticking relay with this HVAC control relay restores proper circuit isolation and system timing. This component is built to the exact technical specifications required for peak performance in mid-to-high efficiency thermal equipment.
Key Benefits:- Universal Compatibility: Direct cross-reference for parts RLY2051 and RLY2051K across multiple Lochinvar and A.O. Smith platforms.
- High Current Capacity: Rated for a 10AMP resistive load, providing a significant safety margin for standard HVAC inductive loads.
- DPDT Configuration: Allows for the simultaneous switching of two separate circuits from a single 120V control signal.
- Industrial Build Quality: Constructed with high-grade contact materials to resist arcing and extend the operational life of the switching cycle.
- What are the primary applications for the 100208490 relay? Professional technicians typically utilize this relay for controlling blower motors, high-limit safety circuits, and burner sequencing in commercial boilers and large-scale water heating units.
- Can I use this to replace a 3AMP or 5AMP relay? Yes, as long as the coil voltage (120V) and physical mounting match, the higher 10AMP rating provides superior durability and handles lower amp loads without issue.
- How do I verify if my current relay is failing? Check for continuity across the contacts when the coil is energized. If you notice carbon buildup (pitting) on the contacts or a humming sound without circuit engagement, it is time for a replacement.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lochinvar & A.O. Smith 100208490 Relay is a heavy-duty, 10AMP DPDT relay designed for high-reliability switching in commercial and residential HVACR systems. Engineering to handle demanding electrical loads, this double pole double throw relay provides precise control over dual circuits, making it a critical component for sequencing blowers, burners, or pumps. This genuine OEM replacement part is identical to industry part numbers RLY2051 and RLY2051K, ensuring drop-in compatibility with Lochinvar boilers and A.O. Smith water heaters. Operating with a 120V coil voltage, it provides the robust electromagnetic switching necessary to protect sensitive control boards from high-current draw. When troubleshooting intermittent ignition or fan failures, replacing a pitted or sticking relay with this HVAC control relay restores proper circuit isolation and system timing. This component is built to the exact technical specifications required for peak performance in mid-to-high efficiency thermal equipment.
Key Benefits:- Universal Compatibility: Direct cross-reference for parts RLY2051 and RLY2051K across multiple Lochinvar and A.O. Smith platforms.
- High Current Capacity: Rated for a 10AMP resistive load, providing a significant safety margin for standard HVAC inductive loads.
- DPDT Configuration: Allows for the simultaneous switching of two separate circuits from a single 120V control signal.
- Industrial Build Quality: Constructed with high-grade contact materials to resist arcing and extend the operational life of the switching cycle.
- What are the primary applications for the 100208490 relay? Professional technicians typically utilize this relay for controlling blower motors, high-limit safety circuits, and burner sequencing in commercial boilers and large-scale water heating units.
- Can I use this to replace a 3AMP or 5AMP relay? Yes, as long as the coil voltage (120V) and physical mounting match, the higher 10AMP rating provides superior durability and handles lower amp loads without issue.
- How do I verify if my current relay is failing? Check for continuity across the contacts when the coil is energized. If you notice carbon buildup (pitting) on the contacts or a humming sound without circuit engagement, it is time for a replacement.
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.












