UNITED ELECTRIC CONTROLS C400-121 TEMPERATURE SWITCH C400121

Description:

The United Electric Controls C400-121 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, HVAC equipment, and manufacturing machinery 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 C400-121 Temperature Switch is commonly used in process heating systems, chemical processing equipment, food and beverage production lines, utility services, HVAC systems, and industrial automation installations. The switch utilizes a liquid-filled thermal sensing system 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: C400-121
• Product Type: Temperature Switch
• Series: 400 Series
• Switch Type: Industrial Temperature Switch
• Temperature Range: 25°F to 225°F
• Temperature Range Metric: -4°C to 107°C
• Function: Temperature Monitoring and Control
• Sensing Method: Liquid-Filled Thermal System
• Temperature Element: Remote Bulb and Capillary Assembly
• Output Contacts: SPDT Snap-Action Switch
• Electrical Rating: 15A @ 125/250/480 VAC
• Setpoint Adjustment: Internal Adjustable Setpoint
• Enclosure Type: NEMA 4X Weatherproof Housing
• Housing Material: Epoxy-Coated Die-Cast Aluminum
• Electrical Connection: Conduit Entry
• 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

Common Replacements:

• United Electric Controls C100-120 Temperature Switch
• United Electric Controls B402-120 Temperature Switch
• United Electric Controls B121-120 Temperature Switch