Carrier HH12HA163 Limit Switch, 160 Degree, Manual Reset

The Carrier HH12HA163 is a 160°F manual reset limit switch engineered to protect furnace heat exchangers and heating systems from dangerous overtemperature conditions. When supply air temperatures exceed the 160°F setpoint, this limit switch opens the circuit to shut down the burner, preventing equipment damage and potential safety hazards. Because it is a manual reset type, the switch requires a deliberate technician reset before the system can resume operation — ensuring that the root cause of the overtemperature event is identified and corrected before restart.

Designed as a genuine Carrier OEM replacement part, the HH12HA163 delivers a precise fit and reliable performance in compatible Carrier heating equipment, eliminating the guesswork of aftermarket substitutions.

Key Features

• 160°F (71°C) trip temperature for accurate high-limit protection
• Manual reset operation requires deliberate technician intervention after a trip event
• Genuine Carrier OEM replacement part for assured compatibility
• Protects heat exchangers and system components from overtemperature damage
• Helps maintain safe furnace operation and system integrity

Applications

• Carrier residential and light commercial furnaces and air handlers
• High-limit overheat protection in forced-air heating systems
• Direct OEM replacement for worn or failed limit switches in compatible equipment

Specifications

• SKU / Part Number: HH12HA163
• Brand: Carrier
• Trip Temperature: 160°F
• Reset Type: Manual Reset
• Component Type: Limit Switch