Overview
The United Electric I921N12 is a temperature controller engineered for HVAC and refrigeration applications. With a setpoint range of 0-250°F, the I921N12 delivers dependable electromechanical temperature control in a compact form factor. United Electric Controls manufactures proven switches and controllers for process monitoring, alarm functions, and emergency shutdown across diverse industrial sectors.
Key Features
- Temperature setpoint range: 0-250°F
- Compact electromechanical design for reliable control and switching
- Suitable for HVAC, refrigeration, and process temperature applications
- Snap-acting mechanism reduces spurious trips and improves setpoint stability
- Field-adjustable setpoint for flexible deployment
Technical Specifications
- Temperature Range: 0-250°F (-18 to +121°C)
- Model: I921N12
- Manufacturer: United Electric Controls
- Application Category: HVAC & Refrigeration Thermostat
- Control Type: Electromechanical Temperature Switch
- Output: SPDT (Single Pole Double Throw) relay switching
Typical Applications
The United Electric I921N12 is used in:
- HVAC heating and cooling control systems
- Refrigeration unit temperature monitoring
- Freeze protection and heat tracing circuits
- Commercial and industrial process temperature control
- Temperature alarm and emergency shutdown functions
Compatibility & Replacements
Compatible With
- Standard 24 VAC/VDC control systems
- HVAC equipment and refrigeration compressors
- Building automation and process control panels
- Thermowell-mounted temperature sensing applications
Replaces / Drop-In Replacement For
The United Electric I921N12 is a legacy model. Verify compatibility with your system integrator before ordering for specific cross-references to current production models.
Works With
- Standard relay logic control circuits
- Building management systems (BMS)
- HVAC control panels and thermostats
- Temperature sensing and monitoring networks
