Overview
The Eaton CN55GN3AB contactor is a NEMA Size 2 reversing unit from the Cutler-Hammer Freedom Series. This reversing contactor is designed for industrial motor control applications where forward-reverse switching is required. The 110/120V AC coil design makes it compatible with standard control circuits in North American plants and facilities.
Key Features
- NEMA Size 2 rated frame—suitable for mid-range horsepower motor applications
- Reversing contactor configuration for bidirectional motor control
- 110/120V AC coil at 50/60 Hz frequency
- Twin-break, silver cadmium oxide contacts for superior arc erosion resistance and reliability
- Open enclosure style for flexible mounting in control cabinets or standalone applications
- Heavy-duty construction rated for 2,000,000 electrical and 20,000,000 mechanical operations
Technical Specifications
- Frame Size: NEMA Size 2
- Coil Voltage: 110/120V AC, 50/60 Hz
- Pole Configuration: 3-pole (3P)
- Contact Material: Silver cadmium oxide twin-break
- Enclosure Type: Open frame
- Operating Duty: Reversing motor control
- Maximum Electrical Operations: 2,000,000 at rated load
- Maximum Mechanical Operations: 20,000,000
- Maximum Horsepower: 20 HP @ 460V (at rated conditions)
- Manufacturer: Eaton Cutler-Hammer
- Series: Freedom
- Revision: B1
Typical Applications
The CN55GN3AB reversing contactor is commonly used in:
- Machine tool motor control requiring forward-reverse operation
- Crane and hoist control systems
- Conveyor reversals and reversible conveyor systems
- Process automation equipment with directional motor requirements
- Industrial HVAC and fan reversing systems
Compatibility & Replacements
Compatible With
- Standard 110/120V AC control circuits (50/60 Hz)
- NEMA-rated motor control centers
- Cutler-Hammer Freedom Series accessories and control devices
- Industrial motor starters and contactors assemblies
- Motor protection relays and thermal overload devices
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The CN55GN3AB/B1 is the primary part number for this specific revision and coil voltage configuration.
Works With
- Cutler-Hammer motor starters and control devices
- NEMA-standard control circuits and pilot devices
- Standard industrial relay logic and manual control systems
- Electrical interlocks and mechanical disconnect switches
- Thermal and magnetic overload protection assemblies
