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Order Quality 4P Molded Case Circuit Breaker from China Factory

Application domain

SPX Electric factory's high quality 4P Molded case circuit breakers are important electrical components and are widely used in many different industries. The following are the main areas of application:

1. Industrial field

In industrial production, the safe operation of electrical equipment is of vital importance. CCB can be used for motor control, power distribution and other occasions to provide short circuit and overload protection to ensure the normal operation and safety of the equipment.

2. Construction field

Inside buildings, molded case circuit breakers are commonly used in lighting systems, air conditioning systems, and other electrical equipment. They can ensure the normal power supply and operational safety of buildings and prevent safety accidents caused by electrical malfunctions.

3. Electric field

Distribution and control in power systems require reliable equipment to maintain the stability and security of the grid. As one of the key components of power system, plastic case circuit breaker can provide efficient current control and protection function.

In addition, plastic case circuit breakers are also used in many other industries and scenarios (such as data centers, transportation systems, etc.) to meet the circuit safety and reliability requirements in different environments.

What are the structural features of the 4P molded case circuit breaker?

SPX Electric customizred 4P molded case circuit breaker is used in three-phase circuits and single-phase circuits. The 4P molded case circuit breaker has four circuit disconnection switches and can protect circuits of four phases. All four poles are equipped with trip units, which can cut off the live wire and neutral wire of the three-phase system, providing comprehensive protection for the three-phase four-wire system. Application scenario: three-phase unbalanced load or neutral line needs to be completely isolated (such as transformer outlet).


SPX 4p molded case circuit breakers come in a wide range of specifications and types, from 125A to 400A. They are of first-class quality, reasonably priced, and offer comprehensive and considerate after-sales service. We welcome friends from all walks of life at home and abroad to negotiate and cooperate!



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4P 200A Molded Case Circuit Breaker

4P 200A Molded Case Circuit Breaker

SPX durable 4P 200A Molded Case Circuit Breaker is a key protection device designed specifically for three-phase four wire (TN-S, TT system) distribution circuits. It provides synchronous protection and isolation for three phase wires and neutral wire (N pole) at a rated current of 200A. We have always followed IEC/EN standards and Chinese GB standards, which makes our products of high quality. Choose SPX to avoid detours.
4P 350A Molded Case Circuit Breaker

4P 350A Molded Case Circuit Breaker

The high-quality 4P 350A Molded Case Circuit Breaker provided by SPX is a deep response to the risk of neutral line overheating and safety isolation challenges in modern distribution systems. We not only provide products that meet standards, but also offer professional services based on system harmonic analysis, protection selective simulation, and full lifecycle reliability management. Choosing SPX means that you have chosen the most comprehensive security perspective and forward-looking technological response partner for your critical power facilities, thereby building a strong and intelligent power infrastructure for your own enterprise.
4P 250A 200A Molded Case Circuit Breaker

4P 250A 200A Molded Case Circuit Breaker

SPX factory offers a high quality 4P 250A 200A Molded Case Circuit Breaker, which is our direct response to the increasingly complex power distribution environment and constantly improving safety standards. We ensure that every product undergoes rigorous testing, and its four pole synchronous breaking performance and N-pole protection characteristics meet and exceed the standard requirements. We not only provide products, but also are willing to share our experience in designing quadrupole systems, assessing harmonic effects, and coordinating protection to help you build a safer, more standardized, and more reliable distribution system. Choosing SPX means choosing an uncompromising commitment to safety and standards.
SPX Electric as a professional manufacturer and supplier of quality 4P Molded Case Circuit Breaker in China. With our own factory, we provide customized services and look forward to partnering with you.
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