Breaking capacity of glass sealed fuse.ptc reset fuse_Industry Trends_News & Events_XC Electronics(Shenzhen)Corp.,LTD

中文

Online Message

19 2023-07

Share:

　　

　　Also known as rated short-circuit capacity, it refers to the maximum current value (AC is the effective value) that a fuse can safely break under rated voltage. It is an important safety pointer for fuses. The code for breaking capacity is Ir.

　　That is, the time/current characteristic (also known as the ampere second characteristic). There are usually two expression methods, namely I-T diagram and test report. The I-T diagram is a curve formed by connecting the average fusing time coordinate points of fuses under different current loads in a coordinate system composed of load current as the x coordinate and fusing time as the y coordinate. Each model and specification of fuse has a corresponding curve that represents its fusing characteristics. This curve can be used as a reference when selecting fuses. A test report is a record of test data conducted in accordance with standard requirements for testing projects. Our I-T chart and test report are both based on the data measured under experimental conditions, and there may be differences in the curve or test report under actual usage conditions. Therefore, the test report provided by our company and the I-T chart are only for reference.

Read recommendations:

mini vs micro blade fuse

car air conditioner fuse

resettable fuse symbol

Principles of explosion-proof fuses.radial circuit fuse

microwave high voltage fuse blown.Basic knowledge of fuse wire based fuses

PREVIOUS:Glass sealed fuse temperature rise.smd fuse types

Return

Next：Glass sealed fuse.auto fuse block

Related News

August 19,2023

How many amperes of fuses should be selected for the 315 transformer?trolling motor fuse

　　　　The low voltage current of the transformer is 453.6A (315KVA * 1.44=453.7A), and a fuse should be selected that is about twice as large.　　The high-voltage current of the transformer is 12.6A (315 * 0.04=12.6A), and a fuse of 2-2.5 times should be selected. The content in parentheses is a simple calculation of the high and low voltage currents of transformers.　　Due to the fact that the primary fuse of the transformer is used for short circuit protection (it cannot protect against overload on the low-voltage side), it is usually selected at a ratio of 1.5-2 times. As the load is only 270A, it is evident that there is no problem with heavy load startup. The load current is only 270A, so choosing 300A or 400A is sufficient.　　If the capacity of a single motor carrying a load on a transformer is close to the capacity of the transformer, when selecting a secondary side fuse, a fuse specifically designed to protect the motor should be selected, and the size should also be selected accordin

October 19,2023

automotive blade fuse dimensions.How to choose a suitable fuse?

　　　　In many electronic devices, fuses are indispensable. Since Edison invented the first plug-in fuse in the 1890s, which enclosed thin wires in a lamp holder, the types of fuses have become more and more diverse, and their applications have become more and more widespread. Here are some common knowledge on fuse parameters, selection, and application. The rated values and performance indicators of fuses are determined based on laboratory conditions and acceptance specifications. There are multiple authoritative testing and appraisal institutions internationally, such as UL certification from Underwriters Laboratories in the United States, CSA certification from the Canadian Standards Association, MTTI certification from the Japan Department of International Trade and Industry, and ICE certification from the International Electrotechnical Commission. The selection of fuses involves the following factors: 1. Normal operating current. 2. The applied voltage applied to the fuse. 3. Abnorma

September 14,2023

The Use Value of Self Recovery Fuses on Tablets.plug fuse keeps blowing

　　　　What are the benefits of using self restoring fuses? The application of self-healing fuses as a protective circuit for tablet lithium-ion batteries not only reduces or avoids various natural or human factors that may cause damage and damage to the battery, but also heats up, damages or explodes during overcharging and discharging. The main purpose of applying PPTC to the USB interface is to prevent USB load short circuits from burning out the control circuit of the tablet At the same time, it also avoids accidentally inputting current to burn out the internal circuits of the tablet computer.　　The above applications can reduce economic losses and honor losses to manufacturers and sellers, and require fewer protective components with low cost, simple and reliable design. They can also save maintenance and repair costs for customers, improve product quality and customer reputation, and increase market competition advantages.　　In addition to applying a self restoring fuse protection sc

November 14,2023

automotive blade fuse dimensions.Characteristics of Chip Fuses

　　　　With the development of technology, there are more and more components in circuit design, so the requirements for electronic component packaging are becoming smaller and smaller. The 0603 SMD fuse emerged in this context.　　The 0603 chip fuse provides ultra fast action fusing characteristics in a smaller chip size. The rated current value of the device is up to 4.0A, and its breaking capacity is 35A at a rated voltage of 32V.　　The 0603 fuse adopts standard metric dimensions (91.55mmx85mmx45mm) and can provide secondary overcurrent protection for low-voltage power supplies in DC-DC converters, battery chargers, and portable consumer electronic devices. Through strictly controlled manufacturing processes and advanced thick film technology, fuses provide excellent long-term stable fusing characteristics for portable devices such as mobile phones, PDAs, digital cameras, cameras, and LCD flat panel displays.　　The halogen free and lead-free 0603 chip self recovery fuse supports lead-free

October 17,2023

high voltage fuse blown microwave.How to understand the holding current and triggering current of fuses

　　　　A netizen left a message asking: How do you understand the difference between maintaining current and triggering current of a fuse?　　Fuses all have a holding current and a triggering current. Below, the editor will analyze the difference between the holding current and triggering current of fuses.　　The holding current (IH) is the highest current that can pass through the circuit without triggering a resistor in still air (ranging from 20 ℃ to 25 ℃ depending on the temperature of the product), which is the highest operating current at room temperature.　　The triggering current (It) is the minimum current at which the Lite fuse operates in still air (which can range from 20 ℃ to 25 ℃ depending on the temperature of the product), i.e. the minimum fault current at room temperature.　　For most fuse products, the ratio of It to IH is 2:1, which may be as low as 1.7:1 for some products and as high as 3:1 for others. The difference in materials and production methods, as well as the change i