Trane RLY1357 Relay

The Trane RLY1357 is a precision-engineered 24V DPDT pilot duty relay designed for reliable switching in commercial and residential HVACR control circuits. Rated for 3 amps, this double pole double throw relay provides the necessary isolation and sequence control for complex wiring configurations. As a genuine Trane OEM replacement part, the RLY1357 ensures seamless logic integration with existing Trane air handlers and rooftop units, maintaining circuit integrity without the risk of chatter or coil failure common in universal alternatives. HVAC technicians typically utilize this low voltage switching relay for controlling fan motors, dampers, or secondary contactor coils where dual-circuit control is required. Its compact design allows for easy mounting within tight control cabinets, and the robust terminal configuration simplifies field wiring for fast diagnostics and repair. By choosing the RLY1357 HVAC relay, contractors can ensure their installs meet original equipment specifications for voltage tolerances and switching speed.

• DPDT Configuration: Provides versatile switching capabilities by controlling two separate circuits simultaneously.
• OEM Reliability: Direct Trane RLY1357 replacement ensures exact fitment and mechanical compatibility with factory control boards.
• Pilot Duty Efficiency: Optimized for low-amp draw control circuits, reducing the load on the 24V transformer.
• Simplified Wiring: Standardized terminal markings facilitate rapid installation and troubleshooting during service calls.

What is the coil voltage for the RLY1357 relay?
This relay operates on a 24VAC control circuit, making it compatible with standard HVAC transformers and thermostats.

Can I use this to replace a SPDT relay?
Yes, as a double pole double throw (DPDT) relay, it can perform the functions of a single pole relay, though the additional terminals will remain unused.

What should I check if the relay coil is energized but the contacts don't close?
Verify the 24V signal at the coil terminals; if voltage is present and the mechanical bridge does not move, internal coil resistance should be checked for an open circuit.

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.