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Ya Xun focus on the new over-current overheating electronic protection components of the research, development, manufacturing and sales, access to a number of world-class fuse patent, with over-current protection alloy wire and overheating protection of fusible alloy wire and other advanced technology, using German automated production process. Provide a full range of current fuses, thermal fuses and other products, high performance, reliability, electronic circuit protection is the best choice.
Ya Xun for domestic and foreign customers with professional free design and application services, and to quickly deliver, excellent cost-effective to win customers praise. Ya Xun has a complete engineering research and development center,
Is the world with a small number of industry at the same time have the materials, equipment, technology patents, as well as computer simulation technology, mechanical and electrical integration R & D strength of the company, manufacturing efficiency, protection of electronic components in the field of world leader.
Our engineers combine the advanced technology of fuses and thermal fuses with traditional industrial technology, to provide you with one-stop from the rapid proofing to small batch production services. Please contact our professional team, let us come for you to achieve all the technical requirements.
What Is A Fuse?Glass tube fuse
Fuses are also known as current fuses, and the IEC127 standard defines it as a "fuse body." It is primarily a function of current overload protection. When the circuit fails or abnormal, accompanied by rising current, and the rising current may damage some important devices in the circuit, it is possible to burn the circuit or even cause a fire.
If the circuit correctly install the fuse, then the fuse will rise in the current to a certain height and heat, when the fuse itself cut off the current, so as to protect the safe operation of the circuit.
• Resistivity is large; low melting point.
• Small size, easy to install
• Disjunction capability precision, reliability
• Different structural features, installation in various forms
• Under normal conditions, the fuse has a long shelf life
• Recoverable fuse, reset can be repeated use
• Long life of the fuse, in case of fault-free circuit, synchronized with the life of the equipment
Working Principlesmall fuses
Current fuse is a hot fusing working principle, when the current flows through the conductor, because fusing wire conductor there is a certain resistance, so the conductor will heat up. When the circuit current is not normal rise,fusing wire will heat fusing, cut off the circuit current.
Resettable fuse is a current anomaly, the resistance becomes larger working principle, when the current through the polymer polymer is not normal rise, the fuse resistance will become larger, through the fuse current will be reduced to ensure the normal work of the circuit.
Fuse Classificationautomotive fuses
Scope of use: power fuses, machine fuses, electronic fuses, car fuses.
Volume classification: large, medium, small and micro (SMD type).
Rated voltage classification: high voltage fuses, low voltage fuses and safety voltage fuses.
Breaking capacity classification: high and low breaking capacity fuse.
Flat head tube fuse (can be divided into internal welding fuse and external welding fuse), Online fuses (Single hat online and double hat online, live), Punched Fuse, Guillotine Fuse, Screw Fuse, Insert Fuse, Flat Fuse, Wrap Fuse, SMD Fuse, Resistive Fuse.
Fusing speed (symbol) Category:
(Usually with the TT said), Slow fuse (generally used T), medium-speed fuse (generally used M), fast break fuse (generally used F said), special fast fuse (usually with FF) The
According to the current classification: 32ma, 63ma, 100mA, 150mA, 200mA, 250mA, 300mA, 400mA, 500mA, 600mA, 800mA, 1A, 1.25A,1.6A, 2A, 2.5A, 3A, 3.5A, 4A, 5A, 6A, 7A, 8A, 9A, 10A, 12A, 15A, 20A, 25A, 30A
Material points can be divided into: lead antimony alloy wire, lead-tin synthetic wire, silver-copper alloy wire, polymer PTC
fuse resistanceFuse Selection
The most commonly used in circuit overcurrent protection components is the fuse. It is usually in series in the circuit, the fault current increases to a certain value, its own fusing and cut off the circuit, to protect the circuit in other equipment. So it is important to choose a suitable fuse:
A) Safety standards: European regulations fuse, the United States regulatory fuse, the Japanese regulatory fuse
C) Fusing type: According to the current characteristics of the protected circuit, select the fuse fuse type (such as fast break F, slow cut T). For example, the current characteristic of the protected circuit is constant current, then fast fuse type is used.
D) Rated voltage (Un): nominal operating voltage of the fuse, code is Un, the fuse voltage rating must be equal to or greater than the effective circuit voltage. General standard voltage rating series is 32V, 125V, 250V, 600V.
F) Fuse minimum I2T : Determine the I2T of the fuse according to the surge I2T of the protected circuit. For example, the surge circuit I2T is 1 (A2S), in order to ensure that the fuse can withstand more than 100,000 times the impact of the fuse I2T should be greater than: ÷ 0.2 = 5 (A2S).
G) Rated current (In): also known as the nominal operating current of the fuse, code is In, the rated current of the fuse is determined by the manufacturing department in the laboratory conditions.
SOURCE: Import-Export Bulletin Board (http://www.imexbb.com/)
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