CJX2-D300 High Ampere AC Contactor 300A
Ac contactors – Definition & Types
An AC contactor functions as an electromechanical control device designed to establish or interrupt electrical connectivity between power sources and high-capacity loads. Equipped with integrated voltage transient suppression, these devices provide reliable switching operations in power distribution systems. Their primary applications encompass electrical apparatus control and power network management, particularly for operating industrial-scale loads such as motor drives, thermal regulation systems, and illumination control circuits.
As a standardized switching solution, AC contactors serve as critical interface components between control circuits and power equipment, enabling remote current regulation through low-power signal commands. Distinct from circuit protection devices, contactors maintain closed contacts under normal operation until receiving an open command or fault-induced automatic disengagement, ensuring continuous current conduction during equipment service cycles.
WTAIDQ Contactors
WTAIDQ: Global Leader in Electrification Solutions As an industry frontrunner in power infrastructure and industrial automation, WTAIDQ dominates global markets across high/low-voltage systems, energy transmission networks, and smart distribution solutions. Our core expertise lies in advanced electromechanical manufacturing, delivering an extensive portfolio including:
• Power regulation devices: AC/DC contactors with arc-suppression technology
• Circuit protection systems: MCB/MCCB breakers with precision trip mechanisms
• Ground fault protection: Intelligent earth leakage circuit breakers (ELCB)
• Energy distribution units: Modular distribution boards and busbar systems
• Industrial lighting solutions: High-efficiency luminaires with IoT compatibility
WTAIDQ's integrated solutions encompass engineering design services, custom OEM manufacturing, and intelligent panel building solutions, particularly excelling in motor management systems and critical load protection. Certified to comply with stringent international certifications including IEC/EN 60947, our products demonstrate:
1.50,000+ mechanical operations lifecycle
2.100,000+ electrical endurance cycles
3.<15ms arc extinction capability
4.96%+ conductive material purity
Outperforming industry benchmarks set by Schneider Electric, Lovato, and Phoenix Contact products, WTAIDQ's electropneumatic hybrid contactors achieve 30% higher switching stability and 40% reduced contact erosion through proprietary silver-nickel composite contact technology.
Technical Specification
AC contactor CJX2-D300 is an electrical device with a rated current of 300A, which is used to control the on-off of AC current. It usually consists of an electromagnet and a contact system, which can be used to achieve the on and off operation of the circuit. It has several advantages as follows:
1. Strong control ability: this contactor can realise the rapid on and off of the circuit and can effectively control the flow of current. It can be operated manually or automatically to switch between different circuit states, thus meeting the needs of different applications.
2. High reliability: Due to the advanced manufacturing process and technology, CJX2-D300 has high reliability and durability; under normal use conditions, it has a long life and is not easy to be damaged. In addition, it has an overload protection function, which can cut off the current in time to avoid accidents when a fault occurs.
3. Low energy consumption: AC contactors are designed to reduce energy consumption, so they usually adopt low-power, high-efficiency electromagnets and coil structures. This makes it require less energy during operation and helps to reduce electricity costs. The fit between the contactor and switching elements is also optimised to reduce unnecessary losses.
4. Reliable Contacts: The contacts of CJX2-D300 are made of high quality materials and undergo strict quality control to ensure good conductivity and contact stability. With good contact, the contacts will not have bad phenomena such as firing and tripping, which improves the reliability of circuit operation.
5. Multiple Protection Mechanisms: CJX2-D300 is also equipped with multiple protection measures, such as short-circuit protection and phase loss protection, which can effectively prevent circuit interruptions due to short-circuits or other abnormal conditions. These protection functions can improve the stability and safety of the equipment
Dimension & Mounting Size
CJX2-D09-95 contactors
CJX2-D series AC contactor is suitable for using in the circuits up to the rated voltage 660V AC 50/60Hz,rated current up to 660V,for making, breaking, frequently starting & controlling the AC motor, Combined with the auxiliary contact block, timer delay & machine-interlocking device etc, it becomes the delay contactor mechanical interlocking contactor, star-edlta starter, with the thermal relay, it is combined into the electromagnetic starter.
Dimension & Mounting Size
CJX2-D115-D620 contactors
Normal use environment
◆ the ambient air temperature is: -5 ℃~+40 ℃, and its average value within 24 hours shall not exceed+35 ℃.
◆ altitude: no more than 2000m.
◆ atmospheric conditions: at+40 ℃, the relative humidity of the atmosphere shall not exceed 50%. At a lower temperature, there can be a higher relative humidity. The average lower temperature in a wetter month shall not exceed+25 ℃, and the average higher relative humidity in that month shall not exceed 90%. And consider the condensation on the product due to temperature changes.
◆ pollution level: Level 3.
◆ installation category: class III.
◆ installation conditions: the inclination between the installation surface and the vertical plane is greater than ± 50 °.
◆ impact and vibration: the product should be installed and used in a place without obvious shaking, impact and vibration.
