United Electric Controls E402-3BS Temperature Switch E4023BS

Description:

The United Electric Controls E402-3BS Temperature Switch is used in industrial temperature monitoring and control systems to provide automatic electrical switching when preset temperature limits are reached. Commonly installed in boilers, heat exchangers, process heaters, storage tanks, industrial ovens, and manufacturing equipment requiring reliable temperature regulation and equipment protection. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of existing temperature sensing and control systems.

Applications:

The United Electric Controls E402-3BS Temperature Switch is commonly used in process heating systems, chemical processing equipment, food and beverage production lines, HVAC systems, utility services, and industrial automation installations. The switch utilizes a remote bulb and capillary sensing assembly to detect temperature changes and actuate electrical contacts for alarms, shutdown functions, and automatic process control, helping maintain safe and efficient operation of critical industrial equipment.

Technical Specifications:

• Brand: United Electric Controls
• Part Number: E402-3BS
• Product Type: Temperature Switch
• Series: 400 Series
• Switch Type: Electromechanical Temperature Switch
• Function: Temperature Monitoring and Control
• Sensing Method: Remote Bulb and Capillary System
• Temperature Element: Fluid-Filled Thermal Sensor
• Output Contacts: SPDT Snap-Action Switch
• Electrical Rating: 15A @ 125/250/480 VAC
• Setpoint Adjustment: Internal Adjustable Setpoint
• Differential: Adjustable Switching Differential
• Enclosure Type: NEMA 4X Weatherproof Housing
• Housing Material: Epoxy-Coated Die-Cast Aluminum
• Electrical Connection: Conduit Entry
• Process Connection: Remote Temperature Bulb Assembly
• Suitable for Heating and Cooling Applications
• Designed for Alarm and Shutdown Functions
• Compatible with Boilers, Heat Exchangers, Tanks, and Process Equipment
• Intended for OEM Equipment and Replacement Installations
• Suitable for Maintenance, Retrofit, and Repair Projects
• Engineered for Continuous-Duty Industrial Service
• Industrial Process Control Compatible

Common Replacements:

• United Electric Controls E402-4BS Temperature Controller
• United Electric Controls B402-120 Temperature Switch
• United Electric Controls C400-121 Temperature Switch