【应用】35A~800A,Littelfuse高压大电流保险丝助力电路保护设计
如图1所示,在设计到电子电路的系统应用(如功率转换器、电源供应器、不间断电源,变速驱动器、控制电路以及软启动器等)中,基本上都需要用到保险丝。保险丝作为一种对温度比较敏感的器件,相当于电路中”故意薄弱“的部分。当电路发生过载或短路的情况时(可能会导致电流高于正常电流数倍),保险丝会熔断,从而达到中断电路、保护下游电路的目的。例如,当电路发生短路时,几乎没有电阻来阻止电流的流动,电压会迫使越来越高的电流经过导线到达短路点。此时,如果不使用保险丝切断电路,则电路产生的热量极有可能会导致设备损坏,甚至设备起火。
图1 保险丝在电路保护中的原理框图
图2 保险丝内部结构
如图2所示,对于市面上的大部分保险丝产品,其内部结构通常是由熔断元件、壳体(熔断器本体)以及端子组成。当电路发生过流情况时,保险丝的工作过程如图3所示。其中,熔断元件最先开始熔化,逐渐融化到开始分离,随着分离的发生,熔断元件会进一步烧毁,直到不再能够自我维持并熄灭,从而保证保险丝安全、永久地断开。
图3 保险丝的工作过程
在实际应用中(如工业电子、汽车电子、消费电子以及通信设备等),在选取保险丝时通常会考虑其以下几点,包括额定电压(最大系统电压)、额定电流(分配给保险丝的标称安培数值,在正常工作条件下可承载)、中断额定值(在额定电压下可安全断开的最大额定电流)以及开始熔化熔丝元件所需的能量(熔化I2t)等。因此,考虑到上述各种因素,本文推荐LITTELFUSE提供的高压大电流保险丝解决方案——L70QS系列和L50QS系列,提供宽泛的电流参数范围可选(35A~800A)。同时,具备出色的分断能力(DC分断能力高达50kA),以及优异的温度折减性能,能够适应多种工作环境(在较高温度下,具备出色的电流承载能力)。此外,L70QS系列和L50QS系列高压大电流保险丝能够提供较低的I2t,以达到快速熔断、释放能量、保证安全的目的,更多的资料可在平台获取。
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型号- 0998150._,142.5631.6202,0695040.PXPS,0297015._,0895020_,0HEV040.XXX,0898300._,0HEVXXX.ZXPCB,157.5701.5401,10EVXXX.ZXPY,142.7010.XXXX,0337010._,0298150.ZXEH-LT,0898225._,0299040._,142.5395.6172,SHEV080.ZXBD,0888250._,157.5701.5631,0297004._,0297900._,0899025.Z,0999060._,157.5916.6101,283 SERIES,153.XXXX.580_,0898060._,156.5610.570_,10EV020.XXX,4998100.M_,0498060._,142.7010.6102,0317030.M,3298350.H,3998425._,0999070._,0895030_,0498XXX.MXM6,0888XXX.U-1M6,0888XXX.U-1M8,0498070._,156.5611.5301,157.5916.XXX1,3998500._,099707.5_,05980016Z-CN,0317020.M,0299XXX.ZXNV,4998030.M_,0327005._,3998250._,0997XXX.WXN,0297003._,3298XXX.ZXM10,142.5395.6152,153.1612,153.XXXX.570_,157.5916.6201,157.5916.5351,156.5610.560_,0891005._,0998500._,157.5701.6501,10EVXXX.ZXPCB,3998175._,142.7010.6122,0695015.PXPS,0287040._,0898400._,0327015._,0299XXX.ZXT,0298XXX.ZXEH,155.0892.5501,0298250._,153.3502,0899035.Z,0895040_,0299050._,0998175._,0298175._,3998160._,157.5916.6251,157.5916.6131,156.5677.530_,153.0000,10EVXXX.ZXBDP,0891XXX.NXS,0287030._,0HEV015.XXX,3298250.H,0298175.ZXEH-LT,0287XXX.U,4998XXX.M-1M6,157.5701.6401,20EV070.ZXBDM,0287XXX.H,156.5611.6101,0287XXX.L,3298250.Z,0998250._,0HEVXXX.ZXPCBL2,153.XXXX.620__,0888XXX.U-NH,0498XXX.MXT,10EVXXX.ZXISO,02400094,0895050_,02400120P,3298175.Z,05980015Z-CN,153.2512,294 SERIES,0498125._,0298125.ZXEH-UL,20EV100.ZXBDM,156.5611.XXX1,3298175.H,0498XXX.MXT-CN,3298350._,156.5677.540_,SHEVXXX.ZXBD,0498200._,0327003._,0317XXX.M,3998600._,157.5700.5801,0337XXX.PX2S,157.5917.5801,157.5701.6421,156.5677.550_,0297XXX.WXNV-CN,157.5701.6301,0299060._,0999080._,0297005._,153.2502,153.0010.XXX2,157.5916.6121,0695020.PXPS,0498080._,156.5610.580_,0298350._,0495900.Z,155.0892.5751,3998150._,142.7010.6202,0495900.X,142.5631.5302,157.5700.5631,153.XXXX.6502,0898150._,3298900._,0298500._,0299XXX.TXN,153.7000.XXX2,153.XXXX.540_,3298900.Z,4998125.M_,157.5701.6331,157.5917.6101,156.5610.530_,0298150._,142.5395.6102,142.5395.6222,0298100.ZXEH-UL,3298125.Z,0HEVXXX.ZXPY,0695060.PXPS-HT,4998XXX.M-M6,3298125._,0327025._,157.5700.5501,0HEV030.XXX,0998350._,0495XXX.ZXA,4998080.M_,157.5701.6201,157.5917.6231,3298125.H,157.5917.6351,156.5677.560_,3298080.H,0495025_,157.5701.5351,3298080._,0898500._,3298XXX.Z,3298080.Z,155.0892.6101,0337003._,0HEV050.XXX,0287020._,3298500.ZXSTA,3298XXX.H,142.0020.XXXX,02400112P,0297010._,0695040.PXPS-HT,3298200.H,157.5917.6121,156.5611.6111,0HEVXXX.ZXISO2,153.XXXX.530_,157.5701.6351,0299070._,157.5701.XXX1,0298275.ZXEH-LT,157.5701.6231,142.5395.6202,0HEV010.XXX,155.0892.6251,0287010._,157.5916.5501,SHEV060.ZXBD,153.XXXX.6402,3298200._,0HEVXXX.ZXC,3298200.Z,4998200.M_,142.5631.6152,02400111P,0999040._,153.5631.XXX2,157.5701.6101,4998XXX.M-NH,153.5631.XXX1,157.5917.6251,0695XXX.PXP,031707.5M,20EV080.ZXBDM,156.5611.6121,0498100._,0899060.Z,882-853,882-854,155.0892.6121,157.5916.5631,3998070._,157.5700.6401,142.5631.6122,0998XXX.UX-2M8,0898175._,157.5701.6131,153.1602,157.5701.6251,0999050._,153.XXXX.560_,0998XXX.UX-2M6,155.0892.XXX1,3298100._,0327900._,0298XXX.UX1M8,0299080._,3298100.Z,0998450._,0498XXX.MXTM6-CN,0297002._,0895025_,157.5917.6151,156.5677.580_,0297025._,0891030._,142.5395.6252,3998225._,157.5701.6121,156.5610.550_,157.5917.6161,3298100.H,157.5917.6281,02400113P,10EVXXX.ZXPCBL,155.0892.6301,0998XXX.UX-NH,0298XXX.UXT,157.5700.6501,0337900._,142.7010.6152,0298040._,157.5701.6151,0287001._,3998300._,142.5631.6102,157.5701.6271,0498XXX.M-CN,0327010._,032707.5_,3998400._,0998XXX.UX-1M8,0498XXX.MXM6-CN,153.XXXX.550_,156.5611.6151,0997004_,0695025.PXP,0998XXX.UX-1M6,142.5395.6122,153.7010.XXX2,157.5917.6171,029707.5_,0287035._,3998XXX.ZXM10,157.5700.5401,294C 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Littelfuse POWR-GARD®模块和支架-LSCR系列高速保险丝盒
描述- 该资料介绍了Littelfuse公司的LSCR系列高速熔断器模块化底座。这些底座适用于各种高速度和UL电源保险丝,具有模块化设计,便于在面板板上安装。产品规格包括电压等级(700V、1000V、1500V)、安培额定值(400A、800A、1200A)和中断能力(200kA AC/250kA DC)。此外,还提供了尺寸图、技术规范和选型指南。
型号- L15S,L17T,KLC,L75QS,JLLN,L25S,SPFJ,LSCR001,JLLS,LSCR102,L70S,LSCR002,LSCR101,L50QS,L60S,L50S,L70QS,LSCR103,JLS
MEGA®+系列螺栓式保险丝-额定32 V DC数据表
描述- MEGA®+系列熔断器,额定32V直流电压,适用于高达650A的大电流电路保护。该系列熔断器采用“扩散药丸技术”,提供时间延迟特性,适用于电池和交流发电机保护以及其他需要超高压保护的粗电缆。熔断器具有高对比度颜色编码,便于识别,适用于汽车、SUV、公交车、卡车、水陆两用车和越野车辆等。
型号- 0298XXX.UXP-1M6,0298040._,02980350._,02980125._,0298XXX.UXP-1M8,0298XXX.UXP-2M6,0298060._,02980300._,0298XXX.UXP-NH,02980175._,0298XXX.UXP-2M8,02980100._,02980400._,02980250._,02980650._,02980450._,02980225._,02980200._,0298080._,02980150._,02980500._,0298650.U-2M8,0298650.U-2M6
【应用】从电源到通信接口的保护,起重机控制系统也需全副武装
针对起重机电气方面的故障失效模式,全球电路保护器件的领先者Littelfuse带来了完善的解决方案,包括电源输入和电机驱动保护,及通信接口的保护方案。
Littelfuse(力特)LA系列保险丝中129个产品淘汰通知(LFPCN_PG0100)
描述- Subject: Notice Of Obsolescence – 129 LA Series Fuse Part Numbers.
型号- L50QS100,LA130URD70TTI0100,PSR031FS0200,L50QS225,PSR032FS0900Z,PSR033FS0500,L50QS,PSR073FS0500,LA70QS4504K,PSR071FS0200,L70QS400,LA070URD30TTI0250,L50QS050.T,PSR032FS1000Z,LA50QS604,LA060URD33TTI2000,PSR031FS0450,PSR033FS0630,PSR033FS1600,LA50QS90-4,LA70QS600-4,L50QS350,PSR031FS0450Z,LA070URD32TTI0800,PSR073FS0630,LA50QS8004,LA70QS904,PSR071FS0450,LA070URD30TTI0125,L70QS600.X,PSR072FS0550Z,L50QS125,LA130URD70TTI0200,LA70QS125-4K,LA70QS3004,LA50QS80-4,PSR031FS0550Z,LA70QS40-4,LA070URD31TTI0630,L70QS175.V,LA50QS7004,PSR030FS0400Z,PSR030FS0315Z,L70QS500,LA70QS350-4,LA070URD30TTI0350,L70QS250.X,L50QS300.V,PSR031FS0350,LA130URD70TTI0315,LA50QS504,L50QS250,L50QS225.V,LA070URD30TTI0100,LA070URD32TTI0700,PSR071FS0350,LA50QS400-4,LA070URD31TTI0400,PSR071FS0315Z,PSR071FS0400Z,PSR072FS0350Z,PSR073FS0350Z,LA70QS1004,PSR033FS0700,PSR030FS0200Z,L70QS600,LA070URD31TTI0450,PSR071FS0400,PSR071FS0200Z,L50QS035,L70QS035.V,PSR031FS0250,LA50QS804,PSR032FS0800Z,LA70QS1254K,LA70QS1254,L50QS150,PSR073FS0315,PSR031FS0350Z,PSR033FS1800,PSR030FS0550Z,LA070URD33TTI0900,LA70QS704,PSR073FS0550,PSR070FS0080Z,LA070URD30TTI0160,L70QS700,PSR033FS0700Z,L50QS040,L70QS150.V,L50QS060.T,L70QS500.X,PSR033FS0800,PSR073FS0400,LA70QS2004K,LA070URD31TTI0550,LA070URD31TTI0315,LA070URD32TTI0630,PSR032FS1000,LA70QS450-4,PSR072FS0450Z,LA50QS704,LA50QS300-4,LA70QS2004,LA50QS70-4,LA50QS6004,L50QS050,LA50QS225-4,L50QS400.V,L50QS175,LA070URD32TTI0500,LA070URD31TTI0200,LA070URD33TTI0800,LA70QS804,PSR033FS1800Z,PSR071FS0315,LA50QS3504,L50QS500,LA70QS450-4K,LA70QS60-4,PSR030FS0450Z,PSR033FS0900,L70QS100.V,LA70QS5004,L70QS125,LA50QS125-4,LA130URD73TTI0350,LA070URD31TTI0250,PSR073FS0450Z,PSR032FS0800,PSR030FS0063,LA070URD33TTI0700,LA70QS504,LA70QS800-4,L70QS250,L50QS175.V,LA070URD32TTI0400,PSR072FS0315Z,PSR070FS0250Z,L70QS090.V,LA070URD30TTI0080,PSR072FS0630Z,LA70QS150-4,PSR072FS0400Z,L50QS400,PSR032FS0700Z,LA70QS1754K,LA50QS354,PSR031FS0250Z,L70QS,PSR030FS0125Z,L50QS500.X,LA070URD32TTI0550,LA070URD31TTI0350,L70QS100,LA70QS500-4,L70QS400.X,PSR030FS0080,LA70QS500-4K,PSR032FS0900,LA50QS200-4,LA70QS70-4,LA70QS604,LA70QS6004,L70QS350,PSR030FS0100Z,PSR033FS1400Z,LA070URD30TTI0063,L50QS040.T,L50QS300,PSR033FS0500Z,PSR032FS0500Z,L70QS125.V,PSR073FS0700,LA50QS100-4,PSR070FS0160Z,PSR070FS0063Z,L70QS080.V,LA070URD32TTI0450,LA130URD73TTI0550,L70QS200,LA50QS2504,LA70QS700-4,LA50QS35-4,LA130URD73TTI0315,LA50QS404,LA70QS4004,LA70QS50-4,LA070URD33TTI0500,PSR033FS1600Z,LA70QS175-4,L50QS150.V,L70QS450,L50QS200,LA50QS1504,PSR073FS0550Z,LA70QS150-4K,L50QS250.V,L50QS600.X,LA70QS250-4,LA070URD33TTI0630,L70QS300,LA130URD73TTI0450,PSR031FS0800Z,PSR033FS0630Z,L70QS300.X,L50QS450,LA50QS1754,PSR030FS0350Z,LA70QS404,LA130URD72TTI0280,L70QS070.V,LA130URD73TTI0500,LA50QS2254,PSR030FS0350,L70QS080,PSR033FS2000,LA70QS354,LA130URD72TTI0350,PSR070FS0100Z,LA70QS200-4K,PSR070FS0125Z,LA130URD73TTI0630,PSR032FS0400,PSR070FS0100,L50QS035.T,PSR032FS0400Z,PSR032FS0630Z,LA50QS700-4,PSR030FS0100,LA70QS90-4,LA70QS8004,L50QS700.X,L70QS090,PSR072FS0400,LA130URD73TTI0400,LA70QS1504,PSR032FS0630,PSR031FS0700Z,L50QS800,PSR030FS0250Z,PSR070FS0250,PSR030FS0250,PSR033FS1250,PSR072FS0630,L70QS060,LA070URD33TTI1400,L70QS060.V,LA50QS450-4,LA070URD32TTI1000,LA070URD33TTI0550,L50QS350.V,PSR070FS0125,PSR032FS0500,PSR072FS0280Z,PSR071FS0250Z,PSR030FS0125,LA50QS2004,LA70QS1754,LA70QS5004K,L70QS070,PSR072FS0500,L70QS200.V,LA70QS300-4,LA065URD33TTI1600,PSR070FS0315,LA130URD73TTI0700,L50QS700,PSR071FS0160Z,PSR031FS0500Z,LA50QS1004,PSR072FS0450,L70QS040,PSR031FS0800,PSR073FS0500Z,PSR072FS0500Z,PSR071FS0280Z,LA50QS1254,PSR,L50QS800.X,L70QS050,PSR033FS1000,LA50QS800-4,LA130URD71TTI0280,L70QS175,LA130URD71TTI0160,L70QS050.V,L50QS600,PSR072FS0315,LA70QS400-4,LA70QS1504K,PSR033FS0550Z,LA70QS7004,PSR072FS0550,LA70QS80-4,LA50QS350-4,LA130URD72TTI0450,PSR031FS0700,LA130URD71TTI0250,PSR030FS0160,PSR070FS0200,LA130URD72TTI0550,LA130URD72TTI0315,PSR032FS0700,PSR030FS0160Z,LA50QS4504,PSR030FS0063Z,L50QS450.X,L70QS150,PSR033FS1100,PSR073FS0400Z,PSR073FS0630Z,LA130URD70TTI0080,PSR073FS0315Z,LA065URD33TTI1800,L70QS035,L70QS800,L50QS125.V,LA130URD72TTI0500,PSR033FS0900Z,LA SERIES,LA50QS60-4,L50QS060,LA70QS175-4K,LA50QS5004,LA070URD31TTI0800,LA70QS3504,L50QS080.T,PSR071FS0280,PSR071FS0160,LA70QS100-4,PSR070FS0080,LA070URD33TTI1100,PSR032FS1100,L70QS800.X,L70QS040.V,LA70QS6004K,LA130URD71TTI0350,PSR071FS0450Z,L50QS070,PSR070FS0063,LA50QS175-4,LA070URD31TTI0700,PSR073FS0350,L50QS080,LA070URD30TTI0400,PSR030FS0500,PSR070FS0315Z,LA130URD70TTI0063,LA50QS250-4,LA130URD71TTI0200,LA130URD72TTI0400,PSR032FS0550Z,LA50QS600-4,L50QS090,PSR031FS0315Z,LA070URD33TTI1000,PSR031FS0500,PSR072FS0350,PSR033FS0800Z,LA130URD71TTI0450,LA130URD72TTI0630,PSR031FS0630,LA50QS904,PSR030FS0400,LA70QS4504,PSR031FS0400Z,PSR031FS0630Z,L50QS070.T,PSR033FS2000Z,LA070URD30TTI0500,PSR073FS0450,L70QS450.X,LA070URD33TTI1250,LA130URD70TTI0160,PSR033FS1250Z,PSR032FS1100Z,PSR033FS1100Z,PSR071FS0350Z,PSR030FS0550,LA70QS600-4K,LA070URD30TTI0450,PSR031FS0200Z,PSR030FS0315,LA70QS125-4,
30EV系列高压保险丝-额定500 V DC数据表
描述- 本资料介绍了Littelfuse公司生产的30EV系列高压熔断器,该系列熔断器适用于500V直流高压、大电流的汽车系统电路保护,特别适用于电动汽车和混合动力汽车分支电路的过流保护。
型号- 30EV250.ZXBDM,30EV SERIES,30EV150.ZXBDM,30EV200.ZXBDM,30EV,30EV175.ZXBDM,30EVXXX.ZXBDM,30EVXXX.ZXBDM-M6,30EV225.ZXBDM,30EV300.ZXBDM
【技术】解析半导体保险丝——一种暗藏诸多门道的高速熔断器
在熔断器类目中一种特殊的产品,叫高速熔断器,又叫半导体保险丝,是开发应用于半导体电路过流保护的器件。本文中Littelfuse将为大家解析高速熔断器。
数据中心方案选型指南
型号- 505系列,SLVU2.8-4,SP0524P,L70QS系列,461,L70QS,881,BB系列,881系列,BA系列,461 系列,SP3012,505,JTD,1206L150SLYR,SP1003,JTD系列
低压工业电机驱动器和软起动器
描述- 本文介绍了工业电机驱动和软启动器在工业应用中的作用,包括变频驱动(VFD)和软启动器的原理、市场趋势、保护与控制解决方案,以及相关安全标准。文章重点阐述了VFD和软启动器在提高电机寿命和能源效率方面的优势,并提供了Littelfuse公司相关产品的详细信息。
型号- SMBJ,TMOV,LDC,1.5SMC,L50QS,L70QS,JLS,LFJ,LSIC1MO170E1000,USUR1000,LSCR,SM,LFT,XPT,N SERIES,ULTRAMOV,JLLS,MCC,SMF,PSR,SMF4L,504,505,606,IX4351NE
LSCR系列高速保险丝盒POWR-GARD®块和支架
描述- Littelfuse公司推出的LSCR系列高速熔断器模块化底座,适用于各种高速度和UL电源保险丝。该系列产品具有模块化设计,便于在面板板上安装,提供多种电流等级(400A、800A和1200A)和电压等级(700V、1000V和1500V),满足不同应用需求。
型号- L17T,KLC,L75QS,L25S,PSX1XLDB,EV1K,L50QS,PSX1XLUB,LSCR,ESR1XLDB,PSR030DS,PSR032DS,PSR032DL,LSCR1XX,PSR030DL,PSR072DL,LSCR102,PSR070DL,LSCR101,L60S,LSCR103,PSR030US,PSR032US,PSX3XLDB,PSR030UL,LSCR SERIES,PSR032UL,PSR072UL,PSR070UL,L15S,SPFJ,L70QS,JLS,ESR1XLUB,PSR031DS,PSR033DL,JLLN,LSCR0XX,LSCR001,JLLS,PSR031DL,PSR073DL,LSCR002,L70S,PSR071DL,L50S,PSR031US,ESR3XLDB,PSR031UL,PSR033DS,PSR071UL
【产品】Littelfuse保险丝、TVS、自恢复PTC,应对不同防护需求
Littelfuse有十分丰富的保护器件对应不同等级的应用市场和应用要求,其产品具有安全性高、系列最全、支持好的优点。产品包括瞬态抑制二极管,GDT,PPTC,表面贴装保险丝,自恢复保险丝,延时型保险丝,高速保险丝等。
大电流保险丝
描述- 该资料介绍了MIDI® 70V高电流保险丝(HP Fuse),这是一种专为高电流电路保护设计的保险丝,适用于高达200A的电流。它采用“扩散药丸技术”,在熔断后具有1MOhm开路电阻,保证在最高70V电压下的安全中断。这款保险丝适合风扇、加热器和高浪涌峰值负载等高电流应用。
型号- 4998030.M_,4998XXX.M-1M6,4998060.M_,4998200.M_,4998080.M_,4998050.M_,4998XXX.M-NH,4998125.M_,4998175.M_,4998100.M_,4998070.M_,4998040.M_,4998XXX.M-M6,4998150.M_
高压30EV保险丝,额定500 V DC
描述- 本资料介绍了Littelfuse公司生产的30EV高压熔断器。该熔断器额定电压为500V直流,适用于高电压、大电流的电动汽车(EV)和混合动力汽车(HEV)电路保护。它采用扩散药片技术提供可预测的时间延迟电路保护。
型号- 30EV250.ZXBDM,30EV150.ZXBDM,30EV200.ZXBDM,30EV175.ZXBDM,30EVXXX.ZXBDM,30EV225.ZXBDM,30EV300.ZXBDM
【产品】市面最小管状保险丝,专为额定功率高达23kW电源电路过流保护而设计
2018年4月4日 - Littelfuse公司推出市面上最小的管状保险丝系列,采用10mm x 32mm管体,交流电压为500V时,其额定电流为40A至63A,分断电流为2,000A,专为额定功率高达23kW的高压电源电路等应用的过流保护而设计。
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提供多种可压缩材料如导热硅胶、散热垫片、各种相变材料以及其他粘合剂和固体试样的材料导热系数测试,给出测试结果及数据解析报告;测试范围:最大加热电流5A;热阻范围:0.01K/W-5K/W。
实验室地址: 深圳 提交需求>
可定制高压耐热绝缘电缆的材质:导体-镀锡/镀镍软铜线,绝缘体-架桥难燃PE/氟素树脂PFA,工作电压:300-600V,工作温度:150-200℃,阻燃对应UL:VW-1、FT1、-F-mark规格。
最小起订量: 3000m 提交需求>
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