CJ19 Contactor for Capacitor Switching 150A
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.
Short Description
Switching capacitor contactor CJ19-150 is a commonly used electrical equipment, widely used in industrial production and household electricity fields. It has the characteristics of high efficiency and reliability, and can achieve fast and accurate switching operations in the circuit.
The CJ19-150 contactor uses capacitors as triggering elements to achieve switching function by controlling the charging and discharging process of capacitors. Its main working principle is to utilize the charging and discharging characteristics of capacitors. When the capacitor is charged, the voltage on the capacitor gradually increases. When the set threshold is reached, the contactor will automatically close; When the capacitor is discharged, the voltage on the capacitor gradually decreases. When it falls below the set threshold, the contactor will automatically open.
The CJ19-150 contactor has many advantages. Firstly, it has a high response speed and can complete switching operations in milliseconds, making it suitable for situations that require rapid response. Secondly, it has high operational reliability, can work stably for a long time, and is not prone to malfunctions. In addition, it also has the characteristics of small size and light weight, convenient installation, and less space occupation.
Type Designation

Note:Acquiesce in 3 pairs of N/O main auxiliary contacts and 3 pairs of N/O precharge auxiliary contacts
Technical Data

Outline and Installation Dimensions

QC SYSTEM
CE Certification
EAC Certification
ISO9001 Certification
ISO14001 Certification
ISO45001 Certification
World Wide Product Support
During the warranty period, users will enjoy our warranty service through our customer service department, authorized customer service center or your local dealer. WTAI electric also provide extensive post-sale support including maintenance and repair agreements
WTAI has established a complete quality control system.
The entire quality management chain from suppliers to production management to customer experience.
WTAI controls quality from the source through product design.
WTAI emphasizes the construction of quality culture within the company.
WTAI is committed to creating a safe and reliable electricity environment for global customers.
WTAI wants to be the most popular brand in the electrical industry.
FAQ
What is the product warranty?
We warranty our materials and workmanship. Our commitment is to your satisfaction with our products. In warranty or not, it is the culture of our company to address and resolve all customer issues to everyone’s satisfaction
Do you guarantee safe and secure delivery of products?
Yes, we always use high quality export packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Specialist packaging and non-standard packing requirements may incur an additional charge.