L482A1004 | Honeywell Low Limit Refrigeration Control 15–55°F 120–277VAC

Honeywell · Industrial Automation & Electrical

Description  The Honeywell L482A1004 is a low limit refrigeration control designed to protect air conditioning and refrigeration systems from damage caused by low temperatures. It uses a 20-foot temperature-sensing capillary to respond to the coldest detected point and actuates dual SPST switches for control or alarm functions. This control is commonly applied in HVAC and refrigeration systems requiring dependable frost protection.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category HVAC Controls Part Number L482A1004 Subcategory Temperature Limit Controls Control Type Low limit / freeze protection Setpoint Range 15°F to 55°F Differential 5°F Sensor Type Capillary bulb Capillary Length 20 ft Switch Configuration 2 × SPST (1 NO / 1 NC) Voltage Rating 120 to 277 VAC Display Type Mechanical Enclosure Finish Enamel, gray Mounting Type Panel / surface mount Application Use HVAC and refrigeration systems Operating Function Limit control / frost alarm Ingress Protection General-purpose enclosure Weight Approx. 1.1 lb     Information About L482A1004 The L482A1004 is part of Honeywell’s L482A series of low limit controllers used for temperature limiting and freeze protection. It is designed to operate electric motors for dampers, valves, compressors, or fans when temperatures fall below a preset threshold. The controller senses temperature along its entire capillary length, ensuring accurate response to localized cold spots. Its mechanical design and wide voltage rating make it suitable for a broad range of domestic HVAC and refrigeration installations. Key Features: Low Limit Temperature Control: Protects HVAC and refrigeration systems from freezing conditions. 20-Foot Capillary Sensor: Responds to the lowest temperature detected along the sensing element. Dual SPST Outputs: Includes one normally open and one normally closed switch for flexible control. Wide Voltage Compatibility: Operates on 120 to 277 VAC for versatile system integration. Mechanical Display: Provides clear, reliable temperature setpoint indication without electronics. Adjustable Setpoint Range: Supports temperature settings from 15°F to 55°F. Freeze Protection Capability: Can shut down compressors or fans to prevent frost damage. Frost Alarm Functionality: Suitable for alarm signaling in cold storage and sensitive environments. Dual Temperature Scaleplate: Displays both Fahrenheit and Celsius for user convenience. The L482A1004 delivers the reliability and precision required for low-temperature protection in HVAC and refrigeration applications.

Brand: Honeywell · Category: Industrial Automation & Electrical

Key features

• Low Limit Temperature Control: Protects HVAC and refrigeration systems from freezing conditions.
• 20-Foot Capillary Sensor: Responds to the lowest temperature detected along the sensing element.
• Dual SPST Outputs: Includes one normally open and one normally closed switch for flexible control.
• Wide Voltage Compatibility: Operates on 120 to 277 VAC for versatile system integration.
• Mechanical Display: Provides clear, reliable temperature setpoint indication without electronics.
• Adjustable Setpoint Range: Supports temperature settings from 15°F to 55°F.
• Freeze Protection Capability: Can shut down compressors or fans to prevent frost damage.
• Frost Alarm Functionality: Suitable for alarm signaling in cold storage and sensitive environments.
• Dual Temperature Scaleplate: Displays both Fahrenheit and Celsius for user convenience.

Specifications

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