Overview
The Allen-Bradley 100L-C20NT4 is an open-frame, IEC-compliant lighting contactor designed for reliable control of industrial and commercial lighting systems. As part of the Bulletin 100L family, this electrically held contactor delivers robust switching performance for tungsten filament lighting, electric discharge (fluorescent) loads, electric furnaces, and non-motor applications up to 20 amps.
Key Features
- 4-Pole Configuration: Enables simultaneous switching of multiple lighting circuits
- Electrically Held Design: Maintains contact state without continuous solenoid coil power consumption
- Dual Coil Voltage Ratings: Compatible with both 50 Hz (240 VAC) and 60 Hz (277 VAC) power systems
- Open-Frame Construction: Compact form factor for panel mounting and retrofit installations
- UL/CUL/KC Certified: Meets North American and international safety standards
- Hold-In Contact Not Included: Auxiliary contacts available via suffix (-90) for specialized control requirements
Technical Specifications
- Amperage Rating: 20 A
- Number of Poles: 4 Pole
- Coil Voltage: 240 VAC at 50 Hz / 277 VAC at 60 Hz
- Contact Configuration: 4 Poles
- Enclosure Type: Open
- Operating Type: Electrically Held
- Certifications: UL, CUL, KC
- Weight: 2.62 lb
- Series: Bulletin 100L (IEC Standard)
Typical Applications
The 100L-C20NT4 is widely used in:
- Commercial and industrial lighting control systems
- Fluorescent and LED fixture arrays in warehouses and facilities
- Electric discharge and tungsten filament load switching
- Industrial automation lighting circuits
- Facility control panels and lighting management systems
- General electrical distribution and load switching (non-motor)
Compatibility & Replacements
Compatible With
- Rockwell Automation control systems and PLCs
- Bulletin 100L series lighting control circuits
- Standard 50 Hz and 60 Hz AC power distribution systems
- Industrial control panels with 240V or 277V coil circuits
- Non-motor and general lighting load applications
Replaces / Drop-In Replacement For
The 100L-C20NT4 is a direct replacement for earlier series 100L contactors with identical 20A, 4-pole, 240/277VAC specifications. Related variants include the 100L-C20ND4 (110/120VAC coil), which requires coil transformer conversion. Verify compatibility with your system integrator before ordering.
Works With
- Standard contactor auxiliary contact modules (e.g., -90 suffix for hold-in contacts)
- Lighting control relays and timers in industrial control systems
- AC/DC power circuits in facility automation
- IEC 60947-4-1 compliant control schemes
