According to the installation methods: plug-in, fixed and drawer-type.
Part introduction:
1, EPD surge protector: EPD plug-in type adopts the same working principle and selection criteria as fixed surge protection. Prevent indirect lightning, direct lightning or other transient overvoltage surges.
2.EIC 1 AC contactor: It is mainly used for rated AC voltage of 50Hz or 60Hz to 660V and below, and can be used to connect and disconnect circuits at a long distance, and can be combined with thermal relays or electronic protectors of corresponding specifications to form electromagnetic or electromechanical motor starters.
3. EGL- 125 disconnector: The disconnector is one of the most widely used high-voltage switchgear, which plays an isolation role in the circuit. Its working principle and structure are relatively simple, but because of its large usage and high reliability requirements, it has great influence on the design, establishment and safe operation of substations and power plants. The main feature of circuit breaker is that it has no arc extinguishing ability and can only open and close the circuit without load current. EGL- 125-4000A is suitable for switching between two low-voltage circuits or switching between two load devices or safety isolation.
4. EATS3 dual power supply switching: two power supplies are used to ensure the reliability of power supply, and a product can be reliably switched between the two power supplies. This product has two switching functions: automatic switching and automatic switching. This is a manual changeover switch. Novel design, safety and reliability, high degree of automation and wide application range.
5.EW45 universal intelligent circuit breaker: it is mainly used to distribute electric energy and protect lines and power supply equipment from overload, short circuit, undervoltage, single-phase grounding and other faults. The circuit breaker has a variety of intelligent protection functions, which can selectively protect and act accurately, avoiding unnecessary power failure and improving the reliability and safety of power supply.
Extended data:
Circuit breaker refers to a switching device that can turn on, carry and cut off current under normal circuit conditions and turn on, carry and cut off current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the scope of application. The boundary between high voltage and low voltage is vague, and those above 3kV are generally called high voltage appliances.
Circuit breakers can be used to distribute electric energy, not always start asynchronous motors, protect power supply lines and motors, and automatically cut off circuits in case of serious faults such as overload, short circuit and undervoltage. Their functions are equivalent to the combination of fuse switches and overheating and underheating relays. Moreover, it is generally not necessary to replace parts after breaking the fault current. It has been widely used at present.
Power distribution is an extremely important link in power generation, transmission and consumption. The distribution system includes transformers and various high and low voltage electrical equipment, and low voltage circuit breakers are widely used electrical appliances.
Reference: Baidu encyclopedia-circuit breaker