UNITED ELECTRIC CONTROLS B402-120 TEMPERATURE SWITCH

Description:

The United Electric Controls B402-120 Temperature Switch is used in industrial process heating, boiler systems, heat exchangers, and equipment protection applications to monitor temperature and provide automatic electrical switching when preset temperature limits are reached. Commonly installed in power generation facilities, chemical processing plants, refineries, thermal fluid systems, and industrial process equipment requiring dependable temperature-actuated control. Maintenance teams and system integrators use this part for repair, retrofit, expansion, or replacement of existing temperature monitoring systems.

Applications:

The United Electric Controls B402-120 Temperature Switch is commonly used in boilers, heat exchangers, thermal oil systems, process vessels, industrial ovens, utility equipment, and manufacturing processes. The switch provides temperature-actuated electrical outputs for alarms, shutdown systems, heating control, and process regulation, helping maintain safe operating conditions and protecting critical equipment from temperature-related failures.

Technical Specifications:

• Brand: United Electric Controls
• Part Number: B402-120
• Product Type: Temperature Switch
• Series: 400 Series
• Switch Type: Electromechanical Temperature Switch
• Function: Temperature Monitoring and Control
• Sensing Method: Remote Bulb and Capillary Assembly
• Output Contacts: SPDT Snap-Action Switch
• Electrical Rating: 15A @ 125/250/480 VAC Resistive
• Enclosure Type: NEMA 4X Weatherproof Housing
• Housing Material: Epoxy-Coated Die-Cast Aluminum
• Setpoint Adjustment: External Reference Dial
• Application: Industrial Process Temperature Control
• Suitable for Boilers and Heat Exchangers
• Designed for Alarm and Shutdown Applications
• Compatible with Process Control Systems
• Intended for OEM Equipment and Replacement Installations
• Engineered for Continuous-Duty Industrial Service

Common Replacements:

• United Electric Controls B121-120 Temperature Switch
• United Electric Controls E402 Series Temperature Switch
• United Electric Controls 120 Series Temperature Switch