CJX2-F400 4P High Ampere AC Contactor 400A
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
The CJX2-F4004 features a compact and rugged design that can withstand harsh operating conditions, making it ideal for a wide variety of industrial applications. With a maximum voltage rating of 1000V and a current rating of 400A, the contactor can easily handle heavy electrical loads and provide excellent performance.
Equipped with advanced technology, CJX2-F4004 has excellent electrical and mechanical durability. Silver alloy contacts ensure minimal voltage drop and reliable conductivity, while double break contacts provide enhanced safety and arc protection. The contactor also adopts a magnetic blow structure, which can effectively extinguish the arc and prevent damage to the contacts.
CJX2-F4004 contactors are designed for easy installation and maintenance, with quick connect terminals for easy wiring. Modular design allows easy replacement or addition of auxiliary contacts, timers or other accessories according to your requirements.
Safety is paramount when it comes to electrical controls, and the CJX2-F4004 prioritizes safety with its built-in overload and short circuit protection. Thermal and magnetic trip elements continuously monitor the load and immediately disconnect power in the event of an overload or short circuit, preventing any potential damage to equipment and ensuring personnel safety.
Type Designation
Operating Conditions
1.Ambient temperature: -5℃~+40℃;
2. Air conditions: At mounting site, relative humidity not exceed 50% at the maximum temperature of +40℃. For the wettest month, the maximum relative humidity averaged shall be 90% while the lowest temperature averaged in that month is +20℃,special measures should be taken to occurrence of condensation.
3. Altitude: ≤2000m;
4. Pollution grade: 2
5. Mounting category: III;
6. Mounting conditions: inclination between the mounting plane and the vertical plane not exceed ±5º;
7. The product should locate in the places where there are no obvious impact and shake.
Technical Data
Structure Features
1. The contactor is composed of arc-extinguishing system, contact system, base frame and magnetic system (including iron core, coil).
2. The contact system of the contactor is of direct action type and double-breaking points allocation.
3. The lower base-frame of the contactor is made of shaped aluminum alloy and the coil is of plastic enclosed structure.
4. The coil is assembled with the amarture to be an integrated one. They can be directly taken out from or inserted into the contactor.
5. It is convenient for user's service and maintenance.
