Trane RLY01720 – Genuine OEM Replacement Relay; Fan, SPNO/SPNC 7 A, 208/240 V Coil

The Trane RLY01720 is a high-performance power and fan relay engineered specifically for Trane and American Standard heating, air conditioning, and fan coil systems. As a critical component of your equipment's control circuitry, this enclosed relay plays a vital role in system safety and performance by safely allowing low-power control signals to switch heavier line-voltage power loads. Maintaining a strong and properly functioning fan relay is essential for preventing blower failures, ensuring seamless heating and cooling cycles, and protecting more expensive system components from electrical damage.

Operating with a 208/240V coil, this relay features a specialized SPNO/SPNC (Single Pole Normally Open / Single Pole Normally Closed) contact configuration rated for up to 7-8 Amps of inductive load. Opting for a Genuine OEM Trane replacement part matters immensely because it guarantees exact electrical compatibility and a precision fit within your system's existing control panel or bracket. This precise tolerance removes any risk of control board short-circuiting, prevents contact sticking, and eliminates the heavy modifications often required when resorting to generic aftermarket relays.

Key Features and Function:

• Precision Airflow Management: Reliable SPNO/SPNC switching handles fan motors and auxiliary system loads securely.

• Genuine OEM Reliability: Factory-engineered with durable silver cadmium oxide contacts and a heavy-duty phenolic enclosure to meet strict Trane standards.

• Safety Integration: Enclosed design protects internal relay components from moisture and dust, lowering the risk of electrical arcs or fire hazards.

• Plug-and-Play Setup: Features convenient 1/4" quick-connect terminals for fast field wiring and is suitable for bracket, panel, or universal mounting.

Product Details and Key Specifications:

• Part Number: RLY01720

• Manufacturer: Trane / American Standard (Genuine OEM)

• Part Type: Fan / General Purpose Power Relay

• Coil Voltage: 208/240 V

• Contact Configuration: SPST (1 Form A / 1 Form B) — effectively functions as an enclosed SPNO/SPNC setup

• Current Rating: 7-8A Inductive (Up to 25A Resistive depending on switching voltage)

• Phase / Hertz: Single-phase (1PH) / 50/60 Hz

• Mounting: Bracket, Panel, or Universal

• Shipping Weight: ~0.3 lbs

🛠️ HVAC Depot Pro Tip: Label Your Wires

When replacing a multi-terminal fan relay like the RLY01720, always turn off the high-voltage breaker to the air handler or furnace first. Before pulling any of the push-on quick connect spade terminals, use a permanent marker or electrical tape to label which wire goes to the normally open (NO), normally closed (NC), common (COM), and coil terminals. Reversing a line-voltage wire with a control circuit wire will cause an immediate short circuit and destroy your indoor control board or transformer.

Cross-Reference & Compatibility:

The RLY01720 is a direct OEM replacement for the following part numbers:

• OEM Numbers: RLY01720, White-Rodgers / RBM Equivalents

• Aftermarket/Fasco: General-purpose enclosed switching relays from brands like Packard (e.g., PR384/PR374) or White-Rodgers can serve as substitutes, provided the coil voltage and amperage limits align perfectly.

Extensive Model Compatibility List:

• Air Handlers & Fan Coils: Fits thousands of high-voltage (208/240V) Trane and American Standard indoor air handlers and fan coils utilizing a hardwired switching relay.

• Verify Specific Model: Consult your specific indoor equipment cabinet sticker or parts manual to verify compatibility with a 208/240V SPNO/SPNC fan relay.