Overview
The Furnas 45CG20AF is a 2-pole, 20-amp definite purpose contactor engineered for industrial and commercial motor control, HVAC, and refrigeration applications. Class 45 construction with a 120V coil provides the low dropout voltage characteristic of the Furnas Centurion 2000 line, making it ideal for systems requiring dependable switching under variable supply conditions. Open enclosure design allows for easy inspection and maintenance in panel-mount installations.
Key Features
- Class 45 definite purpose contactor rated for 20 amperes and 2 poles
- 120V coil with low dropout voltage for stable operation in HVAC and refrigeration circuits
- Compact space-saving dimensions for smaller electrical panels
- Multiple mounting holes and slots for interchangeable installation with competitive models
- Thermoset polyester housing with reinforced construction
- Silver cadmium oxide contacts for reliable switching performance
Technical Specifications
- Poles: 2
- Rated Current (FLA): 20 amperes
- Coil Voltage: 120V AC (100–120V)
- Frequency: 50/60 Hz
- Maximum Voltage Rating: 600 VAC
- Contact Material: Silver cadmium oxide
- Enclosure Type: Open
- Operating Temperature Range: –40 to +65°C
- Weight: 0.55 lbs
- Housing Material: Thermoset polyester
Typical Applications
The Furnas 45CG20AF is widely used in:
- Air conditioning and heating systems
- Refrigeration and commercial cooling circuits
- Pump and motor control circuits rated up to 20 A
- Industrial control panels requiring definite-purpose switching
- HVAC compressor and condenser fan motor control
Compatibility & Replacements
Compatible With
- Standard 120V AC control circuits (50/60 Hz)
- Motor circuits up to 600 VAC maximum
- Panel-mount electrical enclosures with DIN or standard mounting rails
- HVAC and refrigeration control systems
- Industrial automation control panels
Replaces / Drop-In Replacement For
- Equivalent Furnas Class 45 2-pole 20A contactors with 120V coil
- Cutler-Hammer C25BNB220A (electrically compatible, mechanically interchangeable)
- Eaton DP220120F (cross-reference equivalent)
Works With
- Standard control relay circuits and timers
- PLC and industrial controller outputs (24 VDC to 120 VAC pilot circuits)
- Electromagnetic and solid-state control devices
- Standard electrical enclosures and control systems
