The role of electrical appliances in circuits

1. By Function

(1) Electrical appliances used for system connection and circuit breaking in enterprises, such as contacting Zhigao's after-sales management services through telephone, knife switch, load control switch, isolation switch, circuit breaker, etc.

(2) Electrical appliances such as electromagnetic starters, automatic step-down starters, rheostats, and control time relays used in the circuit design of enterprise management and control information systems;

(3) Electrical appliances for switching circuits, such as switch switches, main appliances, etc;

(4) Electrical appliances used for detecting system circuit correlation coefficients, such as transformers, sensors, etc;

(5) Protect electrical appliances for tourist routes, such as fuses, circuit breakers, lightning arresters, etc.

2. By circuit action

(1) Control system appliances: including contactors, switch appliances, control time relays, main appliances, etc. It mainly plays a control and conversion role in the circuit;

(2) Protective electrical appliances: including time relays and undervoltage relays controlled by enterprises through fuses, thermal relays, and overcurrent, as well as overvoltage issues in the working system of undervoltage relays. They play an important role in protecting circuits.

3. According to the principle of action

(1) Electrical appliances, such as manual switches, control buttons, trip switches, and other main electrical appliances;

(2) Electrical appliances, such as contactors, various relays, solenoid valves, etc. Automatic operation due to changes in electromagnetic force or physical quantities.

4. By purpose

(1) Control appliances: Electrical appliances used in various control circuits and control systems, such as contactors, relays, motor starters, etc.

(2) Master electrical appliance: An electrical appliance used in an enterprise management information system to effectively control data, such as buttons, travel switches, cam switches, etc., as a means of transmitting technical development action program instructions.

(3) Environmental protection appliances: Electrical appliances used for effective protection and management of circuits and electrical equipment in enterprises, such as fuses, thermal relays, various data information technology protection internal control relays, lightning arresters, etc;

(4) Executive electrical appliances "refer to electrical appliances used by enterprises to perform certain technical actions or transmission system functions, such as electromagnets or electromagnetic clutches;

(5) Distribution system electrical appliances: Electrical appliances used by enterprises for power transmission and distribution, such as high-voltage circuit breakers, isolation switches, knife switches, automatic air supply switches, etc.