AC CONTACTOR
9A,12A,18A,25A,32A,40A,50A,65A,80A,95A
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Model meaning
CJX2- LC1D12 A26-30-10 all indicate the type, AC, current, and voltage. 3/4P are modifiers, and AC Contactors is the keyword. An AC contactor is a unit that automatically changes the connection of a circuit by means of an electromagnet. The AC main circuits (high current) are connected and disconnected over long distances and frequently by this device. It is one of the most commonly used and core components in electric drive and automatic control systems, and can be seen as an "electromagnetic remote control switch" which utilizes "small current" to control "large current".
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Working principle: When an AC contactor is energized, the internal coil generates a magnetic field, causing the moving core and stationary core to attract and close. This action drives the contact system to connect with the stationary contacts, thereby completing the circuit. When the coil is de-energized, the magnetic force dissipates, and the return spring pushes the moving core back, separating the contacts and opening the circuit. |
General product information
Place of Origin: |
5th Floor, No. 3, Jinghong West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province |
Brand Name: |
MINGTUO |
Model Number: |
Ac Contactors |
Certification: |
IOS CE ROHS |
Minimum Order Quantity: |
1 |
Price: |
3$ |
Packaging Details: |
Carton packaging |
Delivery Time: |
Within fifteen days |
Payment Terms: |
100% prepaid, 70%/30%, 80%/20% |
Supply Ability: |
Available at any time |
Description：
Product Overview
The CJX2 series AC contactors are a good choice for switching and control of various types of electrical applications. With advanced electromagnetic design and contact materials that are made to last, these contactors even offer the same stable performance and long service life in industrial application environments, which are traditionally considered as hard.
Key Specifications
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CJX2 series product specifications and parameters
| Model | Rated current | Main contact | Auxiliary contact | Single phase load power | Three phase load power |
| CJX2-0910 | 9A | 3NO | 1NO | 1.8KW | 3.5KW |
| CJX2-0901 | 9A | 3NO | 1NC | 1.8KW | 3.5KW |
| CJX2-1210 | 12A | 3NO | 1NO | 2.5KW | 5KW |
| CJX2-1201 | 12A | 3NO | 1NC | 2.5KW | 5KW |
| CJX2-1810 | 18A | 3NO | 1NO | 3.5KW | 7.5KW |
| CJX2-1801 | 18A | 3NO | 1NC | 3.5KW | 7.5KW |
| CJX2-2510 | 25A | 3NO | 1NO | 5KW | 8.5KW |
| CJX2-2501 | 25A | 3NO | 1NC | 5KW | 8.5KW |
| CJX2-3210 | 32A | 3NO | 1NO | 6KW | 12KW |
| CJX2-3201 | 32A | 3NO | 1NC | 6KW | 12KW |
| CJX2-4011 | 40A | 3NO | 1NO 1NC | 8KW | 18.5KW |
| CJX2-5011 | 50A | 3NO | 1NO 1NC | 10KW | 24KW |
| CJX2-6511 | 65A | 3NO | 1NO 1NC | 12.5KW | 28KW |
| CJX2-8011 | 80A | 3NO | 1NO 1NC | 15.5KW | 37KW |
| CJX2-9511 | 95A | 3NO | 1NO 1NC | 18.5KW | 44KW |
Contact: XX10 (NO)/XX01 (NC)/XX11 (1NO and 1NC)
Product detail
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1. Electromagnetic system
Coil: A copper wire winding wound around an insulating skeleton that generates a magnetic field when energized.
Iron core: including static iron core and dynamic iron core (armature), usually made of stacked silicon steel sheets, used for magnetic conduction and driving contact action.
Reaction spring: causes the armature to reset after the coil is powered off, and the contact is disconnected.
2. Contact system
Main contacts: usually three pairs of normally open contacts made of silver alloy, carrying high currents of the main circuit and connecting/disconnecting the load power supply.
Auxiliary contact: used for controlling circuits, divided into two types: normally open and normally closed, to achieve self-locking, interlocking or signal feedback.
3. Arc extinguishing device
Arc extinguishing cover: usually made of clay or plastic, with metal grids inside, used to divide and cool the arc, and quickly extinguish the arc generated when the contact is disconnected.
4. Other components
Shell: Insulated material protects the internal structure.
Buffer device: a rubber or spring component that reduces mechanical impact when the contact is closed.
Terminal block: used to connect power, load, and control circuits.
Product dimensions
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Quick Product Details
Product actual photos
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Multiple styles
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Product quality
Material quality
1. Core component material
Contact material: High quality products use silver alloys (such as silver cadmium oxide and silver tin oxide), which have good conductivity, arc resistance, and resistance to welding. Poor quality products may use silver plated copper or even pure copper, with a short lifespan.
Coil: High quality enameled wire winding, good insulation, stable resistance, low temperature rise after long-term power on, and not easy to burn out.
Iron core (yoke and armature): made of low loss silicon steel sheets stacked together, with surface rust prevention treatment (such as galvanizing), smooth suction, low noise, and low eddy current loss.
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2. Structural design and process
Arc extinguishing capability: Equipped with an arc extinguishing hood/grid (made of ceramic or high-quality flame-retardant plastic) inside, with a large number of grid pieces arranged neatly, it can quickly cool and divide the arc.
Mechanical structure: The components are installed compactly, and the action mechanism is flexible without jamming. The spring has moderate elasticity, ensuring reliable suction and disconnection.
Shell: Made of flame-retardant and high-temperature resistant materials (such as PA66), with high strength and good insulation performance.
3. Electrical performance and parameters
Contact resistance: low resistance, high conductivity, and low heat generation.
Pull in/release voltage: It can reliably pull in within the specified voltage range (such as 85% -110% of rated voltage), and can reliably release at low voltage (such as 20% -40% of rated voltage), with strong anti-interference ability.
Electrical and mechanical lifespan: Clearly labeled, high frequency. The electrical lifespan of high-quality contactors can reach hundreds of thousands of times or more.
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Product testing
Coil and insulation performance testing
Coil DC resistance: Measure the coil resistance with a multimeter to determine if there is a short circuit or open circuit between turns.
Insulation resistance test: Use a megohmmeter (shake meter or digital insulation tester) to measure:
Electrical action characteristic testing
Pull in voltage and release voltage test: Use an adjustable power supply to power the coil, slowly increase the voltage until the contactor reliably pulls in (usually below 85% of the rated voltage), and slowly decrease the voltage until it reliably releases (usually above 20% -40% of the rated voltage).
Power on suction/release test: Repeat the operation several times at rated voltage, listen for crisp sound, and observe for any abnormal vibration or continuous buzzing sound.
Main contact continuity test
Contact resistance test: Use a circuit resistance tester or a low resistance micro ohmmeter to measure the resistance of each pair of main contacts in the closed state. The value should be very small and three-phase balanced (such as<100 µ Ω level).
Verification of on-off status: In the power-off state, use a multimeter to check the on-off range:
Normally open main contact: When the coil is not powered on, it should be disconnected, and when manually pressed, it should be connected.
Normally closed auxiliary contact: opposite state.
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Test video
Other detailed images
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| Aluminum coil | Copper coil |
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Our product uses copper coils, and we do not recommend choosing products with aluminum coils
1. Conductivity and efficiency
Copper coil: low resistivity, better conductivity
Aluminum coil: high resistivity
2. Mechanical strength and durability
Copper coil: high mechanical strength, wear resistance, fatigue resistance
Aluminum coil: The material is relatively soft and prone to deformation
3. Corrosion resistance and stability
Copper coil: Strong resistance to oxidation and corrosion
Aluminum coil: prone to oxidation
Installation Instructions
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1.Fixed contactor
Rail installation: Insert the standard 35mm rail and fix it with a "click" sound.
Screw installation: Fix it on the bottom plate of the distribution box with M4 screws, paying attention to the heat dissipation distance (≥ 10cm).
2. Wiring (taking typical three-phase motor control as an example)
| Terminal identification | Wiring Instructions | Suggested wire diameter |
| L1/L2/L3 | Connect power input (three-phase live wire) | ≥ 2.5mm ² copper wire |
| T1/T2/T3 | Connect load (such as motor) | |
| A1/A2 | Coil voltage (such as 220V control) | 1.5mm² |
| NO/NC | Auxiliary contacts (for self-locking or signaling purposes) | 0.5~1.5mm² |
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-Inner packaging
Shockproof material
Material: foam, bubble film, etc
Placement: Place evenly around the circuit breaker, at the top and bottom
-External packaging
Carton
Material: High strength corrugated cardboard box
Carton sealing
Method: Seal with tape or strapping
Requirement: Ensure a secure seal to prevent cracking of the box
Identification and labeling
Content:Product model, quantity, weight, manufacturer, transportation label (such as fragile, upward, moisture-proof, etc.)
Location: Clearly printed on the outside of the cardboard box.
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Domestic transportation
If there is a designated freight forwarder in china, we willtransport the products to the designated location through road transportation or domestic express delivery after production is completed
International transport
When the quantity of goods is small and time is tight, and it needs to be transported to a designated location abroad, the three majorinternational express delivery companies are selected for transportation DHL,FEDEX,UPS
Sea freight/air freight
When there is a large quantity of goods and time is not urgent, we choose sea freight. We will choose a suitable freight company, who wil arrange for trucks to pick up the goods and transport them to the designated por for warehousing. Finaly, they will transpored by sea to the customer's desianated port, and the customer needs to pick up the goods with a bill of lading.
Feedback
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Certificate
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Advantages
Competitive Advantages of Our AC Contactors
1. Superior Technical Performance
- 30 million mechanical operations lifespan
- 3 million electrical operations at rated current
- 10×Ie high breaking capacity
- Low power consumption coil design (≤8VA)
2. Advanced Contact Technology
- Silver cadmium oxide contacts for optimal arc resistance
- Dual breakpoint contact structure
- Excellent thermal stability and wear resistance
- Stable contact resistance (<100mΩ)
3. Enhanced Safety Features
- Complete arc chute design
- Dust-proof and pollution-proof construction
- IP65 protection degree available
- Overload capacity: 8-10 times rated current
4. Smart Control Compatibility
- Wide control voltage range (24-500V AC/DC)
- Fast response time (<25ms)
- Modular auxiliary contact blocks
- DIN rail and panel mounting flexibility
5. Quality Assurance
- 100% factory testing including:
- Dielectric strength (2500V, 1min)
- Mechanical operation reliability
- Temperature rise verification
- Certified to IEC 60947-4-1, GB 14048.4
- 3-year product warranty
6. Customization Services
- Special coils for various voltages
- Custom contact configurations
- Emergency delivery within 7 days
- OEM/ODM manufacturing available
Copyright © Zhejiang Mingtuo Electric Technology Co., Ltd.
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