Trane RLY3081 Relay

The Trane RLY3081 Relay is a high-precision OEM furnace blower time delay relay designed for reliable sequence control in residential and light commercial HVAC systems. Functionally identical to Part Number 57T02-001, this component features a specific timing logic of 2 seconds on-delay and 45 seconds off-delay. This sequence is optimized to allow the heat exchanger to reach operating temperature before the blower engages and ensures all residual heat is distributed after the burn cycle concludes. Rated for 24VAC input with a 36A RLA at 240V, the RLY3081 is a critical HVAC blower control for maintaining system efficiency and protecting motors from rapid cycling.

• Precise Timing Logic: Features an factory-set 2-second activation delay and 45-second fan-off delay to maximize airflow efficiency.
• Universal OEM Compatibility: Directly replaces Trane 57T02-001, 57T02-001B1, and RLY03081 in numerous Trane and American Standard air handlers and packaged units.
• Industrial-Grade Build: Includes integrated PC board architecture designed to withstand the thermal stress of high-cycle furnace environments.
• Direct Maintenance Fit: Designed as a drop-in replacement for standard control boards, reducing bench time during repair calls.

Is the RLY3081 compatible with American Standard units?
Yes, as an OEM component, the Trane RLY3081 Relay is widely used in both Trane and American Standard furnaces and packaged heat pumps share identical part specifications.

What symptom indicates this time delay relay has failed?
The most common indicator of a faulty 57T02-001 relay is a blower motor that either fails to engage after the burner ignites or stays running indefinitely after the thermostat is satisfied.

Can I use this to replace a relay with different timing settings?
For proper performance and to meet manufacturer airflow requirements, always match the specific 2-second/45-second timing of the RLY3081 to the original system schematic.

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.