Description
Schneider Electric (Square D) LC1D40AB7 Non-Reversing Contactor Overview
The Schneider Electric (Square D) LC1D40AB7 is a heavy-duty, 3-pole non-reversing contactor engineered for reliable motor and load switching in commercial and industrial HVAC applications. Rated at 40 amps with a 24VAC control coil, this contactor delivers dependable performance in demanding electrical environments where precision switching and long service life are essential.
Key Features
- 3-pole configuration for three-phase load control
- 40-amp continuous current rating for robust motor and resistive load switching
- 24VAC coil voltage for compatibility with standard low-voltage control circuits
- Non-reversing design for straightforward single-direction motor starting applications
- Everlink power connection technology for secure, vibration-resistant screw terminal connections that maintain consistent contact pressure over time
- One normally open (NO) auxiliary contact for control circuit interlocking and status signaling
- One normally closed (NC) auxiliary contact for safety interlocks and feedback circuits
- Screw terminals on both power and control connections for fast, reliable field wiring
Everlink Power Connection Technology
The LC1D40AB7 features Schneider Electric’s proprietary Everlink power connection system. Unlike standard screw terminals, Everlink uses a captive screw mechanism that applies uniform clamping force across the conductor, reducing the risk of loose connections caused by thermal cycling and mechanical vibration — a critical advantage in HVAC compressor and air handler applications.
Auxiliary Contact Configuration
The integrated auxiliary contact block provides one normally open (NO) and one normally closed (NC) contact. These contacts are ideal for control circuit interlocking, remote status indication, and safety shutdown sequences in building automation and HVAC control panels.
Typical HVAC & Commercial Applications
- HVAC compressor motor starting and switching
- Air handling unit fan motor control
- Chiller and cooling tower motor circuits
- Pump motor control in hydronic systems
- Commercial refrigeration equipment
- Industrial motor control centers (MCCs)
Product Specifications
- Brand: Schneider Electric (Square D)
- Model / SKU: LC1D40AB7
- Poles: 3
- Current Rating: 40 Amps
- Coil Voltage: 24VAC
- Operation: Non-reversing
- Power Terminal Type: Everlink screw terminals
- Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)
- Series: TeSys D
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