NEWS
Zhejiang Xinda Electric Co., Ltd. was established in 2002, has a history of 21 years, is located in Liushi Dongfeng Industrial Zone, known as "China Electric City", is one of the professional fuse manufacturers, complete varieties and specifications, our products mainly produce high and low voltage fuses, photovoltaic fuses, car charging pile fuses, etc.
Overcurrent protection device, self-resettable fuse PPTC
A resettable fuse (PPTC: polymer resettable fuse) is a polymer thermistor with a positive temperature coefficient that is used for overcurrent protection and can replace a current fuse. When the circuit is working normally, its resistance is small (the voltage drop is small), and when the circuit has an overcurrent, its temperature rises, and the value increases sharply by several orders of magnitude, so that the current in the circuit is reduced below safety
Overcurrent protection device, self-resettable fuse PPTC
A resettable fuse (PPTC: polymer resettable fuse) is a polymer thermistor with a positive temperature coefficient that is used for overcurrent protection and can replace a current fuse. When the circuit is working normally, its resistance is small (the voltage drop is small), and when the circuit has an overcurrent, its temperature rises, and the value increases sharply by several orders of magnitude, so that the current in the circuit is reduced below safety
Advantages and disadvantages for fuses PPTC
As an advanced overcurrent protection device, PPTC self-recovery fuse is widely used in various electronic and electrical products with its self-recovery, fast response and efficient protection. Choosing the right PPTC fuse can effectively improve the safety of the equipment, reduce the maintenance cost, and extend the service life of the product.
What is the function of a high voltage fuse? What are the common fuses?
The fuse is the simplest and most commonly used electrical protection device, its function is to make the current exceed the specified value, and after a certain period of time to melt (fuse or melter) and shunt the current, disconnect the circuit, and play an overload and short-circuit protection role in the circuit.
3~500KV is used for isolation switches, load switches and high-voltage fuses
The voltage level of 3~500 kV is usually used in equipment in high-voltage power systems, such as disconnectors, load switches, and high-voltage fuses. These devices play a vital role in the power system, ensuring the safety, stability, and troubleshooting of the system.
Overcurrent protection device, self-resettable fuse PPTC
A resettable fuse (PPTC: polymer resettable fuse) is a polymer thermistor with a positive temperature coefficient that is used for overcurrent protection and can replace a current fuse. When the circuit is working normally, its resistance is small (the voltage drop is small), and when the circuit has an overcurrent, its temperature rises, and the value increases sharply by several orders of magnitude, so that the current in the circuit is reduced below safety
