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The wiring methods of fuse holders mainly include plug-in wiring and threaded wiring. Plug and play wiring refers to inserting wires into the socket inside the fuse holder and clamping them with spring plates to achieve wiring; Screw type wiring is the process of threading wires into threaded holes in the fuse holder and connecting them through the frictional force of the threads. Below, we will introduce these two wiring methods separately. Plug and drop wiring is a common fuse holder wiring method. It has the advantages of simple wiring and convenient installation, and is suitable for application scenarios with smaller wire sizes. The spring plate of plug-in wiring needs to ensure sufficient force and reliability when clamping the wire. According to statistics, fuse holders with plug-in connections have a slightly higher electrical failure rate than fuse holders with threaded connections, but their prices are cheaper. The plug-in fuse holder is suitable for low voltage and low c

August 16,2024

Explanation of Parameters in the PPTC Specification for Self healing Fuses

This is very simple. As long as you know the meaning represented by the parameters in the specification book, you can clearly and quickly view the PTC specification book for self recovery fuses. 1. IH (Holding Current): The maximum current that can pass through a polymer thermistor PTC in a static air environment at 25 ℃ when it remains inactive. Under limited environmental conditions, the device can maintain an infinite amount of time without transitioning from a low resistance state to a high resistance state. (If the current passing through PTC is insufficient to cause the PTC to self heat up beyond the Curie temperature, such current is called the non operating current, and the maximum value of the non operating current is called the maximum non operating current) 2. IT (operating current): The minimum steady-state current at which the polymer thermistor PTC operates within a limited time in a static air environment at 25 ℃. 3. Vmax maximum voltage (withstand voltage value):

October 25,2023

motorcycle fuse keeps blowing.How to select the type of self recovery fuse for procurement?

Which is the best choice for Shenzhen's self recovery fuses with a wide variety of models and a complete range? The selection of self restoring fuses has always been a classic topic in the electronics industry. On the way to PTC selection, there is always a model that belongs to you, accompanied by the "Six Steps" of ensuring power supply: 1) Determine parameters: standard working current, maximum working voltage, maximum fault current, and maximum working environment temperature; 2) Determine the PTC that can adapt to the maximum working environment temperature and standard working current using a temperature reduction table; 3) Use the electrical characteristic table to verify the maximum electrical rating of the self recovery fuse selected in step 2 and compare it with the maximum working voltage and fault current of the circuit; 4) Determining the action time: In order to provide better protection effect for the circuit, it is crucial to clarify the working time of PTC; 5)

August 07,2023

What are the differences in the size of car fuses.resettable 5 amp fuse

Many electrical appliances in car circuits are connected with wires of different colors, and fuses cannot be ignored. Fuse is a commonly used name and is referred to as Fuse in national standards. The function of a fuse is to protect circuits (circuits) and electrical equipment. Next, I will provide a detailed introduction to the differences in the size of automotive fuses? Let's learn more together. A car fuse is a type of current fuse. When the circuit current exceeds twice the rated current of the fuse, it will fuse within a few seconds, providing circuit protection. Commonly used for overcurrent protection in automotive circuits and industrial equipment. Automotive fuses can be divided into large, small piece fuses, and medium piece fuses. The rated current range is 1-40 amperes (a) to 30-120 amperes (a), and the rated voltage is 32 volts (V). The fork bolt fuse can be divided into small fork bolt fuse and large fork bolt fuse. The rated current is 30-150 amperes (a) to 40

July 27,2023

The Matching Function of Self Recovery Fuse and Overvoltage Protection Device in Preventing High Voltage Misconnection Protection

There are often testing requirements in circuit protection to prevent high voltage misconnections. In general, the self recovery fuse can be used in conjunction with overvoltage protection devices to prevent high-voltage misconnections. When high voltage is mistakenly connected to the circuit, the backend overvoltage protection device will quickly react, generate large currents, and limit the backend voltage to a certain range. The large current generated by the backend overvoltage protection device can quickly activate the , limit the total current of the system, and ensure that the backend overvoltage protection device will not be damaged due to long-term overcurrent. The key to this cooperation is that after enduring surges for a long time, can quickly act and limit the circulating current before the backend overvoltage protection device reaches the limit value. Therefore, low current can more effectively cooperate with back-end overvoltage protection devices to prevent misconn