Nordyne Blower Relay 621931R

Nordyne / Miller / Nortek 621931R Blower Relay | 30A SPDT OEM

The Nordyne 621931R is a genuine factory-authorized heavy-duty blower relay. As an Original Equipment Manufacturer (OEM) component, it is manufactured by Zettler (Model AZ2280-1C-24A) specifically for Nortek Global HVAC systems. This relay acts as a high-capacity switch, using a 24V AC coil to control the power supply to the indoor blower motor.

Unlike standard single-circuit relays, this model features a Single Pole Double Throw (SPDT) configuration. This design provides both Normally Open (NO) and Normally Closed (NC) contacts, allowing the control board to toggle power between different motor speeds or system components depending on the heating or cooling demand.

Compatibility & Cross-Reference

The 621931R is the current manufacturer standard and serves as the direct service replacement for several legacy and specific production part numbers:

  • Directly Replaces Part Numbers: 621931, 6219310, and 621931R.
  • Manufacturer Reference: Zettler Model AZ2280-1C-24A.
  • Equipment Fitment: Primarily used in Nordyne, Miller, and Intertherm gas furnaces, electric furnaces, and air handlers.
  • Broad Brand Support: Compatible with units branded as Frigidaire, Maytag, Gibson, Westinghouse, Tappan, Kelvinator, GrandAire, and Philco.

Technical Specifications

FeatureDetail
Part Number621931R
Coil Voltage24 VAC
ConfigurationSPDT (Normally Open / Normally Closed)
AC Contact Rating30A (NO) / 20A (NC) @ 277 VAC
DC Contact Rating20A (NO) / 10A (NC) @ 28 VDC
Horsepower Rating2.0 HP (NO) / 0.5 HP (NC) @ 250 VAC

Why Choose a Genuine Nortek OEM Relay?

  • High-Amperage Capacity: Rated for up to 30 Amps, this relay is built to handle the high-inrush current of large blower motors without the contacts welding or "pitting" over time.
  • Precision Timing: Manufactured to Nortek's exact engineering tolerances to ensure the switching speed matches the control board's logic, preventing "relay chatter" during the transition between speeds.
  • Direct Physical Fit: Features a standard terminal layout and footprint, allowing for a secure installation into the existing control cabinet without drilling or mounting modifications.
  • Versatile Switching: The SPDT design makes it a versatile service part that can handle multiple wiring configurations used in varied furnace and air handler models.

Shipping & Order Details

  • Continental US Shipping: We offer reliable shipping rates for all orders delivered within the Continental United States.
  • Authenticity: This is a brand-new, genuine Nordyne-Nortek part in original factory packaging. We prioritize OEM components to ensure your system maintains its original safety and performance ratings.

$32.00

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  • Model: 621931R
  • Manufactured by: Nordyne
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