CJX2-1811 18A 3 Pole AC Contactor

Equipped with 1NO+1NC auxiliary contacts, the CJX2-1811 supports additional control functions such as electrical interlocking, signal feedback and system expansion.Manufactured by GOTOELE, a professional low-voltage electrical equipment supplier in China, this CJX2-1811 18A 3 Pole AC Contactor provides a cost-effective solution for global automation and electrical control projects.

Product Structure and Working Principle

1. Electromagnetic Switching Design

The CJX2-1811 operates through an electromagnetic coil system.

When the coil receives control voltage, the internal electromagnetic mechanism activates the main contacts, allowing power transmission to connected loads.

When the control signal is removed, the contacts return to their original position, safely disconnecting the circuit.

This design enables:

· Frequent motor switching

· Remote electrical control

· Automatic control system integration

2. Three Pole Main Contact Configuration

The contactor features a 3-pole main contact structure designed for three-phase AC loads.

It is commonly applied in:

· Three-phase motors

· Pumps

· Fans

· Compressors

· Machine equipment

The compact structure allows easy integration into motor control cabinets and electrical distribution systems.

3. Auxiliary Contact Expansion Function

The built-in 1NO+1NC auxiliary contacts provide additional control possibilities.

Applications include:

· Motor running status feedback

· Electrical interlocking

· Control circuit switching

· Alarm signal transmission

This improves flexibility when designing industrial control systems.

Main Application Scenarios

1. Three Phase Motor Control

The CJX2-1811 is widely used as a motor switching component in:

· Water pumps

· Ventilation fans

· Small compressors

· Conveyor equipment

· Machine tools

It provides reliable start/stop control for motors in manufacturing environments.

2. HVAC and Building Equipment

Suitable for:

· Air conditioning units

· Ventilation systems

· Heating equipment

· Building service motors

The contactor helps achieve centralized electrical control and automatic operation.

3. Industrial Automation Control Panels

Used inside:

· PLC control cabinets

· Motor control centers

· Production line equipment

The CJX2-1811 works together with control systems, overload relays and timers to create complete motor control solutions.

4. Pump and Water Treatment Systems

Common applications include:

· Water supply pumps

· Irrigation systems

· Wastewater treatment equipment

Its stable switching capability helps ensure continuous operation of auxiliary equipment.

Global Application Experience

Motor Control Project for Food Processing Equipment in Southeast Asia

A food processing equipment manufacturer in Southeast Asia integrated the CJX2-1811 18A 3 Pole AC Contactor into its conveyor and auxiliary motor control cabinets.

The application required frequent motor start/stop operations during daily production.

After installation, the contactor provided stable switching performance under continuous working conditions, helping improve equipment operation reliability and simplify electrical maintenance.

Project Information:

· Application: Food processing machinery

· Installation: Motor control cabinet

· Load type: Three-phase AC motor

· Main requirement: Reliable switching for repeated operation

Technical Specifications

Product Advantages

1. Stable Switching Performance

The CJX2-1811 uses optimized electromagnetic and contact structures to provide reliable switching performance for frequent motor control applications.

2. Compact Installation Design

The modular structure allows installation in:

· Control cabinets

· Distribution panels

· Automation equipment

The compact size helps save internal cabinet space.

3. Flexible Control Integration

With 1NO+1NC auxiliary contacts, the contactor can easily connect with:

· PLC systems

· Motor protection devices

· Control buttons

· Relay circuits

4. Cost-Effective Industrial Solution

Compared with international brands, the CJX2-1811 provides reliable performance with competitive pricing, making it suitable for OEM equipment manufacturers and electrical distributors.

Manufacturing and Quality Control

GOTOELE applies standardized production processes for CJX2 series contactors.

Quality inspection includes:

· Coil voltage testing

· Contact resistance testing

· Mechanical operation testing

· Electrical performance inspection

Each contactor is tested before shipment to ensure stable operation in different industrial applications.

With professional low-voltage electrical manufacturing experience, GOTOELE supplies reliable motor control components for global customers.

Packaging and Delivery

The CJX2-1811 contactors are packed with protective export packaging to prevent damage during transportation.

GOTOELE supports:

· Bulk orders

· OEM packaging

· Customized labeling

· International shipment services

FAQ

Q1: What is the rated current of the CJX2-1811 contactor?

The CJX2-1811 has an 18A rated current and is designed for controlling three-phase AC loads.

Q2: What motor power can the CJX2-1811 control?

The contactor is suitable for motors up to approximately 7.5kW under AC-3 utilization conditions.

Q3: Can the CJX2-1811 be used with overload relays?

Yes. It is commonly combined with thermal overload relays to create a complete motor starter protection system.

Q4: What does 1NO+1NC auxiliary contact mean?

It means the contactor includes one normally open auxiliary contact and one normally closed auxiliary contact for control circuits and signal functions.

Q5: Does GOTOELE provide OEM service?

Yes. GOTOELE supports OEM customization including product labeling, packaging and customized requirements for different markets.