The CYW1 series intelligent universal circuit breaker is used for controlling and protecting low-voltage distribution networks. Generally installed in low-voltage distribution cabinets as the main switch for overall protection. Its technical performance has reached the advanced level of similar products internationally. AC rated current 630~5000A;
Short circuit breaking capacity of 80KA~120KA (effective value);
Rated working voltage AC690V and below;
Having 3 and 4 poles;
Drawer style and fixed style;
Can be installed with reverse wiring;
Multiple intelligent controllers provide different functions;
Implement IEC60947-2 and GB14048.2 standards.

The ambient air temperature is -5 ℃~+40 ℃, and the average value over 24 hours does not exceed+35 ℃ (except for special orders);
The altitude of the installation location shall not exceed 2000mm;
The relative humidity of the air at the installation site shall not exceed 50% at a maximum temperature of+40 ℃; At lower temperatures, there can be higher relative humidity, with the monthly average lowest temperature of the wettest month not exceeding+25 ℃, and the monthly average maximum relative humidity of that month not exceeding 90%, taking into account the occurrence of frost on the surface of the product due to temperature changes; The pollution level is level 3.
The installation category for the main circuit of the circuit breaker, undervoltage release coil, and primary coil of the power transformer is IV, while the installation category for other auxiliary circuits and control circuits is III; The circuit breaker should be installed according to the installation requirements in this manual. The vertical inclination of the circuit breaker shall not exceed 5 °; The circuit breaker is installed in the cabinet compartment and equipped with a door frame, with a protection level of IP40; Install door frames and sealed transparent covers, with a protection level of IP54.

Circuit breakers can be divided into fixed and drawer types. Installing the fixed circuit breaker body into a dedicated drawer seat becomes a drawer type circuit breaker. The circuit breaker body consists of a contact system, an arc extinguishing system, an operating mechanism, a current transformer, an intelligent controller and auxiliary switch, secondary connectors, undervoltage
Composed of components such as shunt release.
contact system
Adopting a one stop contact system, the contact unit has both the function of a main contact and the function of an arc contact at different parts of the same contact;
The use of new arc resistant contacts prevents excessive heating and high temperature rise after breaking short-circuit currents; The contact system adopts multiple parallel connections to reduce electric repulsion and improve the electrical stability of the contact system.
interrupter
Each pole is equipped with an arc extinguishing chamber, which is used to separate the electrodes and insulate them from each other, isolating them from other parts of the circuit breaker and operators.
The arc extinguishing chamber is entirely placed inside the insulation base of the circuit breaker, which increases the mechanical strength of the arc extinguishing chamber wall and prevents it from exploding when breaking large short-circuit currents.
Operating mechanism and manual/electric transmission mechanism
The mechanism is located on the front of the circuit breaker. The mechanism adopts a five link free release mechanism and is designed in the form of energy storage. During use, the mechanism is always in the pre energy storage position, and as soon as the circuit breaker receives a closing command, it can immediately close instantly. Release button or combination of pre stored energy
The brake electromagnet is used to complete it. The electric transmission mechanism is self-contained, and the energy storage shaft is connected to the main shaft through a concave convex wedge-shaped movable joint, making it easy to assemble and disassemble.