Standard Ignition RY-961 HVAC Automatic Temperature Control (ATC) Relay

HVAC Relay for Ford and Lincoln Applications

Standard Ignition RY-961 is an HVAC automatic temperature control relay built for 12-volt systems that need reliable switching in demanding under-hood environments. It uses a square, 4-terminal blade design with a 40 amp rating and is listed for a wide range of Ford, Lincoln, Mercury, Mazda, and Isuzu applications.

For buyers searching for a Ford Fusion HVAC relay, a Ford Escape AC relay, or a Lincoln MKZ climate control relay, RY-961 provides a direct-fit service part for confirmed applications. The relay construction uses a composite housing, aluminum contacts, and epoxy sealing to help protect internal components from heat, dust, and moisture.

Key Features

• Part number: RY-961
• HVAC automatic temperature control relay
• 40 amp amperage rating for 12-volt systems
• Square connector shape with 4 blade terminals
• Male terminal design
• Composite housing for harsh temperature exposure
• Aluminum contacts for durability and electrical longevity
• Epoxy-sealed construction to help resist dust, heat, and moisture
• Manufactured in a TS16949 and ISO9001 certified facility

Detailed Description

Standard Ignition RY-961 is a multi-function HVAC relay used in climate control circuits across select Ford, Lincoln, Mercury, Mazda, and Isuzu vehicles. It is a square relay with 4 male blade terminals and a 40 amp rating, making it a direct replacement for applications that require this specific electrical and connector configuration. This part cross-references Four Seasons 20283 for the same application.

Common fitment includes 2007-2012 Ford Fusion, 2006-2008 Ford Escape, 2007-2011 Lincoln MKZ, 2006-2009 Mercury Milan, and 2013-2019 Ford Fiesta. It also appears in select Ford F-250 Super Duty, Ford Expedition, Lincoln Town Car, Mercury Mariner, and Isuzu Rodeo applications. If you are replacing a Ford F-150 HVAC relay or a Mercury Milan climate relay, confirm the square housing, 4-terminal layout, and amperage rating before installation.

What It Helps Fix

• HVAC blower or temperature control relay failure
• Intermittent climate control operation
• No-response heating and air conditioning relay circuits
• Electrical issues caused by heat-damaged relay contacts
• Moisture- or dust-related relay degradation

Installation Notes and Tips

Verify the relay shape, terminal count, and amperage rating against the original part before replacement. This part is listed for specific Ford, Lincoln, Mercury, Mazda, and Isuzu vehicles, including 2006-2008 Ford Escape, 2007-2012 Ford Fusion, and 2007-2011 Lincoln MKZ applications. Match the connector style and circuit function to the original relay location for proper operation.

Quality Assurance

Standard Ignition manufactures this relay in a TS16949 and ISO9001 certified facility. The composite housing, aluminum contacts, and epoxy-sealed construction are used to support consistent electrical performance in harsh automotive conditions.