ヒューズ 種類 基板 11

If the current in a conductor increases 10 times, the I2t increases 100 times. 423,956種類の産業・ものづくり関連の製品の中から検索できる ... スイッチ・リレー > プリント基板用ヒューズ. 0402 chip size (.041”L x .020”W x .012”H) up to the 5 AG, also commonly known as a”MIDGET” fuse (13/32” Dia. If the operating voltage is very low, the fuse link's natural resistance (voltage drop) must possibly be taken into consideration. The arcs often burn through raceways and equipment enclosures, showering the area with molten metal that quickly starts fires and/or injures any personnel in the area. Since temporary overloads are by definition harmless, overcurrent protective devices should not open or clear the circuit. The melting integral (I2t) results from the squared melting current and the corresponding melting time. 液晶モニター電源基板の1次側に入ってる250V4Aのリード付きセラミックヒューズ(Φ5mmx20mm)です。通常ここに使われるヒューズは遅延タイプなのか即断タイプなのか知りたいのです。それと、ガラス管タイプとセラミックタイプの違 Fuses are essentially temperature-sensitive devices. Even moderate insulation overheating can seriously reduce the life of the components and/or equipment involved. Even though government-mandated high-efficiency motors and NEMA Design E motors have much higher locked rotor currents, POWR-PRO® time-delay fuses such as the FLSR_ID, LLSRK_ID, or IDSR series have sufficient time-delay to permit motors to start when the fuses are properly selected in accordance with the NEC®. The rated current (Irat) of a fuse link should approximately correspond to the operating current of the device or assembly unit which is to be protected (in accordance with the ambient temperature and rated current-definition, which means the permitted continuous currents). The energy in such overcurrents is measured in ampere-squared seconds (I2t). As stated, short-circuits are currents that flow outside of their normal path. Catalog Fuse part numbers include series identification and amperage ratings. Temporary overloads occur frequently. What kind of environmental extremes are possible? table (see factor FT): Due to different specifications of rated current the recommended continuous current of the fuse links is max. Littelfuse POWR-PRO® and POWR-GARD® time-delay fuses are designed to meet these types of protective needs. The necessary breaking capacity of the fuse link is determined by the max. When available fault currents are less than 100,000 amperes and when equipment does not require the more current-limiting characteristics of UL Class RK1 fuses, FLNR and FLSR_ID Series Class RK5 current-limiting fuses provide superior time-delay and cycling characteristics at a lower cost than RK1 fuses. Each type of short-circuit is defined in the Terms and Definitions section.

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