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Contactor

Contactor

The CJX2(LC1-D) series AC contactor is designed for AC 50Hz / 60Hz circuits with rated voltage up to 660V and rated...

Product Overview

What This Model Does

The CJX2(LC1-D) series AC contactor is designed for AC 50Hz / 60Hz circuits with rated voltage up to 660V and rated current up to 95A. It enables remote switching, breaking, and frequent starting of AC motors. The contactor can be adapted into a time-delay contactor, reversible contactor, or star-delta starter using accessories such as modular auxiliary contact sets, air time delay heads, or mechanical interlock mechanisms. It can also function as an electromagnetic starter when a thermal relay is directly plugged in. The product complies with IEC60947-4-1 and GB14048.4 standards.

Key Benefits

  • Enables remote control and frequent switching of AC motors in industrial and commercial applications
  • Supports multiple configurations through add-on accessories without changing the base unit
  • Maintains mechanical and electrical reliability in high-duty-cycle environments
  • Integrates with thermal relays to form a complete electromagnetic starter
  • Provides consistent performance across a wide range of motor power ratings and voltages
  • Built to IEC60947-4-1 and GB14048.4 standards for safety and compatibility
CJX2(LC1-D) AC contactor mounted on DIN rail with visible terminals and coil
CJX2(LC1-D) AC contactor mounted on DIN rail with visible terminals and coil

Who It Is For

  • Panel builders integrating contactors into control panels for motor circuits
  • Industrial automation contractors specifying reliable switching for motor drives
  • Equipment manufacturers building machines with built-in motor control
  • Facility managers upgrading legacy motor control systems with modular options
  • OEMs developing industrial control units that require plug-in thermal protection

Problems It Solves

  • A mechanical switch cannot handle frequent motor start-stop cycles without wear or failure
  • Remote or automated motor control requires a separate controller and additional wiring
  • Motor starting currents cause voltage dips and stress on the supply system
  • Lack of time-delay or reversible functions forces use of multiple components
  • No integrated thermal protection leads to motor damage from overheating
  • Inconsistent performance across different voltage levels without standardised components

Application Scenarios

  • Industrial motor control in automated production lines requiring frequent start-stop cycles
  • HVAC systems where motors need remote or timed operation across multiple zones
  • Water pumping stations with remote monitoring and control via a central system
  • Manufacturing equipment using star-delta starting to reduce inrush current
  • Reversible motor control in conveyor systems or lifting mechanisms
  • Time-delayed switching in processes requiring staged motor activation
Technical Features

How It Is Built

  • Rated voltage up to 660V AC at 50/60Hz for use in industrial three-phase systems
  • Rated current up to 95A with AC3 and AC4 ratings specified for motor control
  • AC3 rated working current from 9A to 95A, AC4 from 3.5A to 44A
  • Standard power ratings for 3-phase motors: 2.2kW to 25kW at 220/230V, 4kW to 45kW at 380/400V, 5.5kW to 55kW at 415V and 500V, 5.5kW to 55kW at 660/690V
  • Rated heat current from 20A to 125A depending on model
  • Available in 3P+NO, 3P+NC+NO contact configurations
  • Can be adapted with accessories to act as time-delay, reversible, or star-delta starter
  • Supports direct plug-in thermal relay for electromagnetic starter functionality

Materials and Construction

  • Flame-retardant plastic housing with high mechanical strength and thermal resistance
  • Silver alloy contacts for low contact resistance and long service life
  • Copper coil with insulated winding for reliable electromagnetic operation
  • Modular auxiliary contact set made of durable insulating material and metal contacts
  • Internal components mounted on a rigid support structure to resist vibration

Quality Control

  • Coil insulation resistance tested to ensure no leakage at rated voltage
  • Contact resistance measured to verify low and stable values under load
  • Mechanical and electrical life tested to meet specified cycle counts
  • Contactor operation verified under full rated current and voltage
  • Accessory compatibility tested during final assembly
Specifications

Stated Ratings for This Model

Specifications for Contactor
Standards CompliantIEC60947-4-1, GB14048.4
Frequency50/60Hz
Rated VoltageUp to 660V AC
Rated CurrentUp to 95A
AC3 Rated Working Current9A to 95A
AC4 Rated Working Current3.5A to 44A
Rated Heat Current20A to 125A
Number of Contacts3P+NO, 3P+NC+NO
Motor Power Rating 220/230V2.2kW to 25kW
Motor Power Rating 380/400V4kW to 45kW
Motor Power Rating 415V4kW to 45kW
Motor Power Rating 500V5.5kW to 55kW
Motor Power Rating 660/690V5.5kW to 55kW

Ratings are as published for this model. Where a value is not published we mark it TBC rather than estimating it.

Values that could not be confirmed against the published catalogue text for this model are marked TBC and confirmed by email before order: Electrical Life AC3, Electrical Life AC4, Mechanical Life.

Manufacturing Process

  • Moulding of the contactor housing and internal structural components
  • Winding and assembly of the electromagnetic coil with insulation testing
  • Installation of contact system and spring mechanism for consistent operation
  • Mounting of auxiliary contacts and connection to main contact circuit
  • Integration of mechanical interlock and time delay mechanisms where applicable
  • Final assembly and calibration of the operating force and contact gap
  • Dielectric and insulation resistance testing before packaging

Customization Options

  • Available in multiple rated current models from LC1-D09 to LC1-D95
  • Contact configuration selected from 3P+NO or 3P+NC+NO per order
  • ODM branding available on housing and packaging upon request
  • Packaging and carton marking can be tailored to buyer’s specifications
  • Accessory sets (e.g. time delay head, interlock) can be included in order
Comparison

How It Compares

Conventional mechanical switchHandles frequent motor starting and remote control, while a switch wears out quickly under repeated use
Contactors with no auxiliary contactsAdds modular auxiliary contacts for status indication and control logic without changing the base unit
Separate time delay relay and contactorIntegrates time delay function into one unit, reducing wiring and space in the panel
Electromagnetic starter with fixed thermal relayAllows direct plug-in of thermal relay for flexible protection matching motor load

Use Guide

  1. Mount the contactor on a DIN rail or panel using the provided mounting brackets
  2. Connect the main power supply to the input terminals and the motor load to the output terminals
  3. Wire the control circuit to the coil terminals using a 220V or 380V control voltage
  4. Install the thermal relay directly into the contactor if forming an electromagnetic starter
  5. Add auxiliary contacts or time delay head as needed for control logic or timing
  6. Test operation manually before energising the full circuit
  7. Verify contactor engages and releases correctly under load and control signal
FAQ

Questions About the Contactor

What is the maximum rated voltage and current for this contactor

Rated voltage up to 660V AC, rated current up to 95A depending on model.

Does it support thermal overload protection

Yes. It can be used with a directly plugged-in thermal relay to form an electromagnetic starter.

What accessories are available to expand its function

Available accessories include modular auxiliary contact sets, air time delay heads, and mechanical interlock mechanisms.

Which standards does it comply with

It complies with IEC60947-4-1 and GB14048.4 for industrial contactor performance and safety.

Can we have it branded under our own name

Yes. We support ODM projects and can print your branding on the housing and packaging. Send your artwork and model list.

How do we get a price for this model

Email [email protected] with the rated current, pole count and quantity you need and we will quote this model directly.

Get a Quotation for the Contactor

Tell us the ratings, pole counts and quantities you need and we will price this model directly.