CJX2-1210 3 Pole Contactor 25 Amp 220 VAC Coil - Fits Relays, Air Conditioner, Heat Pump

CJX2-1210 3 Pole Contactor 25 Amp 220 VAC Coil

Key Features

• High-Conductivity Silver Alloy Contacts: Engineered with premium silver-cadmium oxide contact points that provide superior electrical conductivity and arc resistance, ensuring a long service life even under high-frequency switching.
• Flame-Retardant Industrial Housing: Encased in a high-strength, heat-stabilized thermoset plastic that resists tracking and melting, providing a safe electrical barrier for high-voltage industrial and HVAC applications.
• Precision 220V Electromagnetic Coil: Features a high-quality copper-wound induction coil designed for stable pull-in and release voltages, reducing the "chatter" and humming often found in lower-quality contactors.
• Integrated 1NO Auxiliary Contact: Equipped with one built-in "Normally Open" (10) auxiliary terminal, allowing for the easy integration of indicator lights, interlocking circuits, or feedback signals to a control board.
• Universal DIN Rail & Screw Mounting: Designed for maximum installation flexibility, featuring a standard 35mm DIN rail snap-fit base as well as traditional screw-hole mounting for panel-backplate installation.

Replaces / Cross-Reference Part Numbers

• CJX2-1210
• LC1-D1210
• Schneider: LC1D1210M7
• Chint: NC1-1210
• ABB: AF12-30-10

Compatibility & Fitment

This 3-pole contactor is a universal heavy-duty switch used for controlling motors, heating elements, and lighting loads. Common applications include:

• HVAC Systems: Acts as the primary power switch for air conditioner compressors and heat pump outdoor units.
• Industrial Motor Control: Suitable for three-phase motors up to 5.5kW (at 380/400V) or single-phase motors in pumps, fans, and conveyors.
• Heating Equipment: Used to switch high-amperage resistive heating elements in industrial ovens and water heaters.
• Lighting Arrays: Capable of managing large banks of commercial high-intensity discharge (HID) or LED lighting.
• Note: Ensure your control circuit provides 220V/230V AC to the coil (Terminals A1 and A2). This unit will not operate on 24V or 120V control circuits.

When to Replace

• Loud Buzzing or Humming: Indicates debris inside the magnetic core or a failing shaded pole, which can lead to overheating and coil burnout.
• "Chattering" Contacts: The contactor opens and closes rapidly when energized, often caused by a weakened internal spring or a failing electromagnetic coil.
• Visible Carbon Buildup: "Pitting" or black charring on the contact points suggests the silver coating has worn away, causing high resistance and potential fire hazards.
• Burnt Smell: An acrid, metallic odor coming from the contactor usually indicates the internal coil has melted or the plastic housing is overheating.
• Circuit Won't Close: The coil receives power (A1/A2), but the plunger does not pull in, indicating a break in the coil winding.

Installation Tips

• Safety First: You MUST disconnect the main power supply. Contactors manage high-voltage and high-current circuits that can cause severe injury or equipment damage.
• Coil Wiring (A1/A2): Connect your 220V control wires to the A1 and A2 terminals. It does not matter which wire goes to which A-terminal as it is a non-polarized AC coil.
• Line vs. Load: Connect your incoming power to the top terminals (L1, L2, L3) and your motor or device wires to the bottom terminals (T1, T2, T3).
• Check Terminal Torque: Ensure all screw terminals are tightened firmly. Loose connections are the #1 cause of contactor failure and "arcing" heat damage.
• Auxiliary Use: If your system uses a "Run" light or a status sensor, connect those low-current wires to the NO (13/14) terminals on the right side of the unit.