United Electric Controls E55S-E21BC Temperature Controller 55 Series Remote Bulb

Description:

The United Electric Controls E55S-E21BC Temperature Controller is used in industrial process heating, HVAC systems, refrigeration equipment, environmental chambers, and equipment protection applications to monitor temperature and provide automatic switching at adjustable setpoints. Commonly installed in food processing equipment, storage facilities, utility systems, heat exchangers, and industrial machinery requiring reliable remote temperature sensing and control. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of existing temperature control systems.

Applications:

The United Electric Controls E55S-E21BC Temperature Controller is commonly used in refrigeration systems, freeze protection applications, HVAC equipment, environmental monitoring systems, process heating installations, and industrial control panels. The remote bulb and capillary sensing system allows accurate temperature monitoring in locations where the controller enclosure cannot be mounted directly at the sensing point, providing dependable control, alarm, and shutdown functions.

Technical Specifications:

• Brand: United Electric Controls
• Part Number: E55S-E21BC
• Product Type: Temperature Controller
• Series: 55 Series
• Controller Type: Electromechanical Temperature Switch Controller
• Function: Temperature Monitoring and Control
• Temperature Range: 0°F to 150°F
• Sensor Type: Remote Bulb and Capillary Assembly
• Bulb Material: Stainless Steel
• Bulb Size: Approximately 3/8 in. OD × 4-3/8 in. Length
• Capillary Length: 6 ft Armored Capillary
• Output Contacts: Dual SPDT Snap-Action Switches
• Electrical Rating: 15A @ 125/250/480 VAC Resistive
• Setpoint Adjustment: External Dial Adjustment
• Enclosure Type: NEMA 4X Weatherproof Housing
• Housing Material: Epoxy-Coated Die-Cast Aluminum
• Electrical Connection: 1/2 in. NPT
• Suitable for Heating and Cooling Applications
• Designed for Alarm and Shutdown Functions
• Engineered for Continuous-Duty Industrial Service

Common Replacements:

• United Electric Controls E55A-E21BC Temperature Switch
• United Electric Controls E54-D22BS Temperature Controller
• United Electric Controls E402-4BS Temperature Control Switch