A mechanical switching device that can connect, carry and separate currents under normal circuit conditions and carry connections, for a certain period of time and cut off currents under specified abnormal circuit conditions is a circuit breaker.

The main components that make up a fixed frame circuit breaker include the circuit breaker body, the tripping device, and the accessory configuration.

The main components that make up an extracted frame circuit breaker include the main body of the breaker, the moving part, the fixed part, the tripping unit, and the accessory configuration.

Components of frame circuit breakers include.

1. operating mechanism generally consisting of mechanical mechanisms such as four-link and five-link rods.

2. Housing made up of insulating materials mainly nylon.

3. contact system, moving contact, static contact configuration, either single brake, or double brake.

4. arc extinguishing system, arc extinguishing occurring when the contact is broken.

5. overload protection mechanisms typically consisting of hot bimetallic components, and oil cups.

6. short-circuit protection mechanism usually consisting of a core, coil, reaction spring, etc.

In civil building design, low-voltage circuit breakers mainly include line overload, short circuit, overcurrent, voltage loss, low voltage, earthing, leakage, automatic switching of dual power supplies and

protection when the motor is not frequently started.

Frame circuit breaker high voltage short circuit components

1. Disconnecting components connect power lines or electrical equipment and disconnect power

2. The supporting insulated parts can withstand the working force of the disconnecting element and various external forces

3. The driving factor transmits the operating command, the working force to the starting element contact

4. The basic components of the base circuit breaker

5. Operating mechanism used to make the circuit breaker become lung, separate the brake and maintain the closed circuit or brake state.

Frame circuit breaker installation requirements.

The circuit breaker should be installed in a dry, dust-free, corrosive gas, non-explosive hazardous medium environment, free from shocks. Circuit breakers are normally mounted vertically. Otherwise the accuracy of the tripping action and the interception capacity will be affected and the installation should be smooth. After installing the plastic short-circuit device, the working mechanism is adjusted at the factory and is not freely adjustable when the cover is opened.

The content is provided by the frame circuit breaker manufacturer Rui Rui Electric.