The YKW1 series intelligent universal Circuit Breaker (hereinafter referred to as the circuit breaker) is suitable for distribution networks with AC 50Hz, rated voltage up to 660V(690V) and below, and rated current of 400A~6300A. It is used to distribute electrical energy and protect lines and power equipment from the hazards of overload, undeoltage, sho circuit, single-phase grounding and other faults. Circuit breakers have intelligent protection functions, precise selective protection, can improve power supply reliability, and avoid unnecessa power outages. Simultaneously equipped with an open communication inteace, it can peorm "four remote" operations to meet the requirements of control centers and automation systems. The circuit breaker has a pulse withstand voltage of 8000Vat an altitude of 2000 meters (adjusted according to standards for dierent altitudes, with a maximum not exceeding 12000V). is circuit breaker can be used as an isolator without an intelligent controller and sensor, indicated as.

The circuit breaker complies with standards such as GB14048.2 "low voltage switchgear and Control Equipment Circuit Breakers" and IEC60947-2 "Low Voltage Switchgear and Control Equipment Circuit Breakers".

1.Model and meaning

2.Installation dimensions and external dimensions

3.Specification and quantity of copper bars for user connection

4.Door frame size and installation hole spacing

Working principle of circuit breaker

Characteristics of Circuit Breakers

Circuit Breakers are essential components in electrical systems, designed to protect electrical circuits from damage caused by overcurrent or short circuits. These devices automatically interrupt the flow of electricity when a fault is detected, preventing potential hazards like fires or equipment damage.

Here are the key characteristics of circuit breakers:

1. Overcurrent Protection: Circuit breakers detect excessive current in a circuit. When the current exceeds a preset value, the breaker trips and cuts off the flow of electricity to prevent overheating or fire hazards.

2. Automatic Operation: Circuit breakers are designed to operate automatically without human intervention. When a fault occurs, they detect the abnormal current and quickly interrupt the power supply to prevent damage.

3. Resettable: Unlike Fuses, which must be replaced after they blow, circuit breakers can be reset. Once the issue causing the overcurrent is resolved, the breaker can be manually reset to restore the circuit's functionality.

4. Variety of Types: Circuit breakers come in various types, such as thermal, magnetic, and combination breakers. Thermal circuit breakers use heat to detect overcurrent, while magnetic breakers use a magnetic field to sense faults. Combination types offer both features for enhanced protection.

5. Reliability: Circuit breakers are highly reliable, offering long-lasting protection for electrical systems. They are engineered to handle repeated operations without failure, providing safety over time.

6. Application Flexibility: These devices are used in a variety of settings, from residential buildings to industrial applications, ensuring safety across different voltage levels and systems.

7. Adjustable Settings: Some circuit breakers allow for adjustable settings, enabling users to fine-tune the protection levels based on specific needs. This is particularly useful in industrial environments where electrical loads can vary.

8. Compact Design: Modern circuit breakers are designed to be compact and space-efficient. They are easy to install in electrical panels and can handle high-current loads without taking up too much space.

9. Cost-Effectiveness: While circuit breakers may have a higher initial cost compared to fuses, their ability to be reset and reused makes them a more cost-effective long-term solution.

10. Compliance with Standards: Circuit breakers are built to meet international safety standards, ensuring that they provide effective protection and are safe for use in various electrical systems.

In summary, circuit breakers are crucial for maintaining the safety and efficiency of electrical systems. Their automatic operation, variety of types, and long-term cost-effectiveness make them a popular choice for both residential and commercial electrical protection.