Carrier HH18HA509 Limit Switch

Limit Switch, 155-195 Degree, Automatic

HH18HA509 is identical to HH18HA509A

Carrier HH18HA509 Limit Switch – OEM 155°F–195°F Automatic Limit Switch

Description:
The Carrier HH18HA509 Limit Switch is an official OEM replacement part designed for Carrier HVAC systems. This automatic limit switch, rated for 155°F–195°F, ensures your furnace or heating system operates safely by preventing overheating and maintaining proper temperature regulation. Built to Carrier’s high-quality standards, it offers reliable performance, durability, and a precise fit for compatible models.

Key Features:

• Genuine Carrier OEM replacement limit switch

• Automatic reset for consistent operation

• Temperature rating: 155°F–195°F

• Prevents furnace overheating and ensures system safety

• Durable construction for long-term reliability

• Easy installation with factory specifications fit

• Helps maintain optimal furnace performance

Specifications:

• Part Number: HH18HA509

• Product Type: Limit Switch

• Temperature Range: 155°F–195°F

• Reset Type: Automatic

• Brand: Carrier

• Application: HVAC/Furnace safety and temperature control

Applications:
Ideal for use in Carrier furnaces and HVAC units, the HH18HA509 Limit Switch provides dependable temperature control, protecting your system from damage caused by overheating.

Keep your Carrier system safe and efficient with the Carrier HH18HA509 OEM Automatic Limit Switch (155°F–195°F) — engineered for precision, reliability, and long-lasting performance.