Resistors and fuses are similar in material and construction, but their cost is reduced due to their dual function. Fuse resistors can be divided into: metal film fuse resistors, fuse type wound resistors, and fuse type cement resistors. There are several types of power: 1/4W, 1/2W, 1W, and 2W. As the power increases, the appearance size of the product will continue to increase. The resistance value of fuse resistance is generally small, mostly less than 1 ohm, and often acts as a sampling resistor in the circuit. At the same time, it plays a role in the occurrence of surges or other situations where large currents are generated and the circuit needs to be protected. Fusing causes the circuit to break and has a protective effect. At the same time, most of the fuse resistors are chip type, with relatively stable performance. They are commonly referred to as Jiebixin fuse resistors, which are also known as Jiebixin chip fuse resistors. There are two types of products: fast fuse and
According to size, it can be divided into small, medium, and large car fuses. The current includes: 1A, 2A, 3A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A, 35A, 40A, 50A, 60A, 80A, 100A; In plug-in car fuses, each color represents a different current of the car fuse. Certification includes UL, CSA, and ROHS. The types can also be divided into: MIN-N 2A Lt.grey, 3A Violet, 4A Pink, 5A Tan, 7.5A Brown, 10A Red, 15A Blue, 20A Yellow, 25A Natrual, 30A Green, 35A Pupel, 40A Orange/32V plastic zinc alloy 11x4x11mm ATY-N 2A Lt.grey, 3A Violet, 4A Pink, 5A Tan, 7.5A Brown, 10A Red, 15A Blue, 20A Yellow, 25A Natrual, 30A Green, 35A Pupel, 40A Orange plastic zinc alloy 19x5x18.5mm MAX-N 20A Yellow, 25A Natrual, 30A Green, 35A Pupel, 40A Orange, 50A Red, 60A Blue 70A Tan, 80A Natural, 100A Violet/32V
Fuses are the simplest protective devices used to protect electrical equipment from overload and short-circuit currents; Choose different types of high-voltage fuses according to installation conditions and purposes, such as outdoor drop type and indoor type. For some special equipment high-voltage fuses, special series should be selected; The fuse we often refer to is a fuse type. Nowadays, the Energy crisis and environmental pollution problems are increasing day by day, and the haze weather in a large area of the country has sounded an alarm bell for people. In terms of environmental pollution, the impact of cars cannot be ignored. Developing efficient, energy-saving, and zero emission clean electric vehicles has become an inevitable trend in the development of the automotive industry both domestically and internationally. In order to improve the power performance and range of electric vehicles, the voltage of the power battery pack of electric vehicles is increasing, reaching se
ISO-8820 and QC/T420-2004 standards define it as a fused protective device connected to a circuit that disconnects the circuit when the current exceeds the specified value and time. A fuse is a thermal response device, and the fuse or fuse in the fuse is made of a fusible alloy with high resistivity or a good conductor with a smaller cross-sectional area. In order to protect the wiring harness and other equipment, it is intentionally designed and manufactured as the weakest part of the circuit. Under normal working conditions, the fuse or fuse in the fuse will not blow; When a short circuit or severe overload occurs in the system, the fuse or fuse will immediately melt, thus protecting the circuit and electrical equipment In order to ensure the safe operation of the vehicle's electrical appliances and ensure the proper function of the fuse, it is particularly important to choose the appropriate type and specification. The selection of fuses involves the following factors: current
1. British standard fuse British fuses are mainly used for equipment produced in Commonwealth countries. The British standard fuse case is made of ceramic material, and the product has the characteristics of small size and high cost-effectiveness, which is particularly favored by UPS manufacturers below 240V. 2. American standard fuse American style fuses are the most widely used, covering most power electronic product applications. The American standard fuse case is made of melamine mesh cloth and ceramic lamination process, which has strong impact resistance, small Joule integral value, low power loss, superior DC performance and other characteristics, and is widely used in substations, Electric locomotive and other occasions. 3. European standard fuse The shell of the European standard square fuse is made of ceramic material. This product has the characteristics of low operating temperature, low power loss, and small Joule integral value, and is suitable for applications th
For high current protection zones, the selected fuse should have the following performance: ① large capacity, usually in the tens to hundreds of A; ② Capable of withstanding instantaneous high currents and pulses; ③ High safety and reliability; ④ The operating environment temperature is relatively high; ⑤ Good mechanical characteristics. 1. Selection of fuse type Select the appropriate type based on the working environment, size limitations, current characteristics, voltage characteristics, connection method, etc. of the fuse. Usually, high-voltage fuses for electric vehicles use American standard FWH, FWP, and other series. 2. Determination of fuse parameters The rated current value of fuses is usually based on the value at an ambient temperature of 23 ± 5 ℃. In order to meet the actual operating requirements of electric vehicles, it is necessary to modify the rated current value. By using the above formula, a preliminary rated current of the fuse can be obtained. However, in
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
