Carrier HN61KA002 Relay

The Carrier HN61KA002 Relay is an essential electromagnetic switching component designed for integration within Carrier, Bryant, and Payne HVAC systems. This SPDT (Single Pole Double Throw) relay features a 24V coil voltage, making it the standard interface for low-voltage control circuits managing high-voltage inductive loads like blower motors and compressors. Engineers designed this General Purpose HVAC Relay with 1/4-inch quick-connect terminals to streamline field wiring and ensure secure electrical junctions. As a genuine OEM Carrier replacement part, it ensures the precise pull-in and drop-out voltage tolerances required to prevent contact chatter and premature wear in cycling applications. This HVAC contactor relay is rated for Pilot Duty and specific inductive FLA/LRA loads, providing the reliability necessary for maintaining system sequence of operations. Integrating this relay restores thermostat-to-component communication, ensuring the air handler or furnace operates within factory parameters for peak efficiency and safety.

Key Benefits

• Broad Compatibility: Direct replacement for various Bryant and Payne switching relays, ensuring correct footprint and terminal layout.
• Robust Contact Design: Silver-cadmium oxide or similar alloy contacts reduce pitting and arcing during high-cycle heating and cooling demands.
• Simplified Installation: Standard 24VAC coil logic integrates seamlessly with existing control boards and 18-gauge thermostat wiring.
• Compact Enclosure: Low-profile design fits into tight control cabinets without interfering with capacitor or transformer clearance.

Common Questions

How do I verify the contact rating for this relay?
The Carrier HN61KA002 is typically rated for 12-15 Amps at 120V or 240V. Always check the inductive load requirements of your fan or motor against the nameplate data on the relay housing to ensure it can handle the startup inrush current.

Can I use this as a universal SPNO relay if I don't need the NC contact?
Yes, as an SPDT relay, it features both Normally Open (NO) and Normally Closed (NC) terminals. If your application only requires an SPNO relay, you can utilize the COM and NO terminals and leave the NC terminal unused.

What are the signs that this switching relay has failed?
Common failure modes include a "chattering" sound indicating coil weakness, high resistance across contacts due to carbon buildup, or a complete failure to energize the load when 24V is present across the coil terminals.

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.