power fuse supply
中文
Online Message
Online Message
News & Events News & Events

News & Events

Keep abreast of company dynamics

Terminology for the characteristics of fuses.

27

2023-10

Share:

65c6c49caf393eb

　　1. Rated current: The working current of a fuse (the maximum current that a fuse can maintain normal operation for a long time under normal conditions).

　　2. Rated voltage: The working voltage of the fuse (the maximum voltage that the fuse can safely withstand at the moment of disconnection). When selecting a fuse, the rated voltage should be greater than the input voltage of the protected circuit.

　　3. Breaking capacity: When a large overload current (such as a strong short circuit) occurs in a circuit, the fuse can safely cut off (break) the maximum current of the circuit. It is an important safety indicator for fuses. Safe breaking refers to the phenomenon of avoiding splashing, burning, explosion, and other hazards to surrounding components, components, and even personal safety in the breaking circuit.

　　4. Overload capacity (carrying capacity): The maximum overload current that a fuse can maintain for a specified period of time.

　　UL standard stipulates that the maximum non fusing current of a fuse maintained for more than 4 hours is 110% of the rated current (100% for miniature fuse tubes)

　　According to IEC standards, the maximum non fusing current of a fuse that operates for more than 1 hour is 150% of the rated current

　　5. Fusing characteristic (I-T): The relationship between the load current applied to the fuse and the fuse's fusing time.

　　A. Fusing characteristic curve (I-T curve): A curve formed by connecting the average fusing time coordinate points of a fuse under different load currents in a logarithmic coordinate system with the load current as the X-axis and the fusing time as the Y-axis. Each model and specification of fuse has a corresponding curve that represents its fusing characteristics, which well describes the overload performance of the fuse. It can be used as a reference for selecting fuses.

Read recommendations:

JK-H

high voltage fuse types

thermal sensor definition

Application of PPTC Thermistor in Batteries

The Application of Self Recovery Fuses in RS485 Interface.volvo truck blower motor fuse location

PREVIOUS:plastic fuse box under stairs.Discussion on the Application of Fuses on LED Beads

Return

Next：car charger fuse replacement.Essential knowledge for selecting automotive fuses

Related News

July 20,2023

Characteristics of fuses and fuses.resettable pptc fuse

　　　　For the melt, its operating current and operating time characteristics are the ampere second characteristics of the fuse, also known as the inverse time delay characteristics, that is, when the overload current is small, the fusing time is long; When the overload current is high, the fuse time is short.　　Our understanding of the ampere second characteristic can be seen from Joule's law that Q=I2 * R * T. In a series circuit, the R value of the fuse remains basically unchanged, and the heat generated is proportional to the square of the current I and the heating time T. This means that when the current is high, the time required for the melt to fuse is shorter. When the current is low, the melting time required for the melt to melt is longer, and even if the rate of heat accumulation is less than the rate of heat diffusion, the temperature of the fuse will not rise to the melting point, and the fuse will not even blow. So, within a certain overload current range, when the current re

October 27,2023

automotive blade fuse holder.Common Sense for Fuses

　　　　A fuse refers to a self destructing fuse that experiences significant surges or other current exceeding limits in a circuit; In order to protect the components of other parts of the circuit where the fuse is located and the equipment is normal, the cost of replacing the fuse can be ignored compared to replacing the entire circuit that may be damaged. Due to the fact that fuses are a common element that needs to be replaced, we will introduce two basic concepts and provide a more in-depth introduction to fusion applications and testing and diagnostic methods. Please refer to the relevant articles on the website.　　Common Sense 1: Determine if the fuse is burning (fuse)?　　If the fuse can be removed from the circuit, it can be a visual Shenzhen fuse to determine whether it has burned out; The simplest method to determine whether a fuse is a continuity test is to blow other materials. Quickly test with a multimeter to determine if it is working properly, by hearing a beep and touching t

October 11,2024

Guide to Current Fuse Selection

　　　　Selecting the appropriate current fuse is crucial for the safety and efficient operation of an electrical system. Firstly, one must consider the rated current of the circuit. The rated current of the fuse should be slightly higher than the normal operating current of the circuit. For example, if a circuit typically operates at 5 amperes, a fuse with a rated current of around 5 - 7 amperes might be suitable. However, it should not be too high, as this may lead to a situation where the fuse does not blow when it should during an overload or short - circuit.　　Secondly, the voltage rating of the fuse needs to match the circuit voltage. Using a fuse with a lower voltage rating than the circuit can be dangerous, as it may not be able to handle the electrical stress when the circuit is operating.　　The type of application also affects the fuse selection. For example, in a circuit with high inrush currents, such as those in some motor - starting circuits, a slow - blow fuse may be required.

August 24,2023

Recoverable fuse low resistance 0603 series parameters and application.supercheap auto blade fuse holder

　　　　There are two resistance specifications for the recoverable fuse ASMD0603 series, one is the conventional resistance series, and the other is the low resistance series. The low resistance ASMD0603SL series provides micro surface mount resettable overcurrent protection, making this world's smallest PTC suitable for ultra portable applications where space is very valuable and device current is low. (ASMD0603 series recoverable fuse)　　The recoverable fuses in the ASMD0603SL series include models ASMD0603SL035, ASMD0603SL050, ASMD0603SL100, ASMD0603SL125, ASMD0603SL150, ASMD0603SL175, and ASMD0603SL200, with a maximum current of 50A and a holding current range of 0.35mA to 2.0A. The maximum working voltage is 6V, and the working temperature range is -40 ℃~85 ℃.　　The main features of the recoverable fuse ASMD0603SL series include: compliance with RoHS standards, halogen-free, and UL certification. This series of fuses has a fast fusing speed, and the 0603 package is small in size. It is

April 10,2023

Fuseless car charger, carefully burn your phone

Many users have told me about buying printers, but when asked which one they want to buy, they can't tell. Before purchasing a printer

+86 755 89762685

MB:+86 13924633629 Ms.vicky

E-mail: waimao@xcfuse.com


Factory :

XC Electronics(Shenzhen)Corp.,LTD

Add: Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China


Shenzhen branch: Shenzhen Xucheng Electronic Commerce co.Ltd

Add: 8-15 Jinyuan Industrial zone,Heao, Henggang, Shenzhen 518115,China

About Us Products Resource Solutions Certifications News & Events Contact Us

© Copyright. xc 2023. All rights reserved.粤ICP备11049369号