【选型】Littelfuse（力特）保护继电器选型指南
Littelfuse（力特）公司成立于1927年，全球总部位于美国伊利诺伊州芝加哥，在美洲、欧洲和亚洲还拥有30多个销售、分销、制造和工程部门。美国力特是电路保护领域的全球领先企业，向业界提供最广泛且最尖端的电路保护产品及解决方案产品组合。
Littelfuse于 2013年收购Hamlin，Hamlin Electronics 是一家专注于传感器技术的私营企业 – 倾注所有经验、资源和热情，为全球汽车、工业和消费品行业的各种供应商客户提供解决方案。Hamlin 在其卓越的专业化历程当中，在开发和应用传感器方面拥有众多第一。
选型目录
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Adu啦 Lv7. 资深专家 2021-01-25学习，学习，力特的保险丝还是不错的 -
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Littelfuse（力特）保护继电器和控制装置选型指南
Littelfuse is a diversified industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 17,000 global associates, Littelfuse partners with customers to design and deliver innovative, reliable solutions.
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TERMINALS,MICROPROCESSOR-BASED DATA-ACQUISITION SYSTEM,传感器,TOTALLY SOLID-STATE TIMING MODULE,接地交流/直流系统,发电机接地故障继电器,液位传感器,5通道泵控制器,丁字轨,ALARM CONTROLLER / BATTERY CHARGING UNIT,远程诊断工具,完全可编程的泵保护继电器,未接地交流系统,SINGLE-PHASE CURRENT & VOLTAGE MONITOR,闪光灯,DONUT STYLE TRANSFORMER,重型电压监测器,MOUNTING ADAPTERS,转换器,微机型交直流灵敏漏电继电器,GROUND-FAULT CTS,反旋钮,全固态定时模块,SINGLE-PHASE VOLTAGE/PHASE MONITOR,接地故障继电器测试仪,GROUND-FAULT GROUND-CHECK MONITOR,OBSTRUCTION LAMP ALARM RELAY,8-PIN PLUG-IN ALTERNATING RELAYS,工业减震块,三相、自动调整量程、双量程电压监控器,SMALL-FORMAT TERMINATION ASSEMBLY,DIP SWITCH,安装架,电弧闪光继电器,接地参考模块,时间调整拨盘,PANEL-MOUNT ADAPTERS,双通道，本质安全开关,UNGROUNDED AC SYSTEMS,11-PIN SOCKET,UNIVERSAL LAMP ALARM RELAY,NEUTRAL-GROUNDING-RESISTOR MONITOR,微机型闪弧继电器,单探头导电液位控制,仪表变压器,ARC-FLASH RELAY,非指示保险丝座,馈线保护系统,GROUNDED AC/DC SYSTEM,快速连接,低液位截止液位控制,保险丝座,8-PIN OCTAL-BASE, PLUG-IN VOLTAGE MONITOR,平行路径隔离,EARTH-LEAKAGE MONITOR,继电器测试器,高级接地故障和接地电阻监测继电器,FACTORY PROGRAMMED MODULE,LOW COST, SINGLE-PROBE CONDUCTIVE LIQUID LEVEL 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CONTROL,NON-INDICATING FUSE HOLDERS,INTRINSICALLY SAFE RELAYS,馈线保护系统监视器,FULLY PROGRAMMABLE PUMP PROTECTION RELAYS,负载传感器,回路供电的线性输出电流传感器,REMOTE MONITOR,ANALOG % CURRENT METER,PHOTO CONTROL,DIN导轨安装适配器,PROTECTION RETROFIT KIT,TOTALLY SOLID-STATE, DELAY-ON-BREAK TIMING MODULE,MICROPROCESSOR-BASED AC/DC SENSITIVE EARTH-LEAKAGE RELAY,ON/OFF OR OFF/ON RECYCLING TIMING MODULE,剪辑,MOTOR PROTECTION RELAY,GROUND REFERENCE MODULE,DC GROUND-FAULT MONITOR,3-PHASE, AUTO-RANGING, DUAL-RANGE VOLTAGE MONITOR,SOLID-STATE ON/OFF RECYCLING TIMER,DIN RAIL MOUNT ADAPTER,全固态延时定时模块,开关,UNIVERSAL VOLTAGE DELAY-ON-MAKE TIMERS,DIN-RAIL ADAPTER CLIP,指示保险丝座,INSULATION MONITOR,LIQUID LEVEL CONTROL RELAY,MOUNTING ADAPTER,自供电接地故障和相电压指示系统,括号,LIQUID LEVEL PROBE,二极管逻辑单元,SELF-POWERED LOAD SENSOR,RELAY TESTERS,远程复位模块,通用电压，3相电压监控器,负荷传感器,ELECTRONIC MEGOHMMETER,OCTAL PLUG-IN LIQUID LEVEL CONTROL,RETRIGGERABLE SINGLE-SHOT TIMER,插入式单探头导电液位控制器,远程监控器,ELECTRODE,水密盖,STUD-MOUNT TERMINATION ASSEMBLY,TIMERS,REMOTE RESET 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FUSE HOLDER,电压监测器,三相电压监测器,AC SYSTEM MONITORS,监视器控制面板,ENCLOSURES,ALTERNATING RELAYS,电弧检测装置,SELF-POWERED GROUND-FAULT AND PHASE-VOLTAGE INDICATION SYSTEM,三相电源监控器,单通道液位传感器,P型夹,FRONT PANEL MOUNT KIT,智能电机保护继电器,MOUNT ADAPTER,小型端接组件,以微处理器为基础的数据采集系统,数字定时器,PARALLEL PATH ISOLATOR,MICROCONTROLLER-BASED FAMILY OF LOAD SENSORS,LIQUID LEVEL CONTROL RELAYS,终端组件,CURRENT MONITORING RELAYS,接地故障继电器测试单元,低电流闪光器,NON-INDICATING FUSE HOLDER,低成本继电器,TOROIDAL CURRENT SENSOR,SINGLE PROBE CONDUCTIVE LIQUID LEVEL CONTROL,温度输入模块,交流继电器,SURFACE-MOUNT ADAPTER,接地故障监视器,LOAD SENSORS,欠电流监测器,内螺纹快接端子,微机接地故障继电器,SINGLE-PHASE CURRENT MONITOR,3-PHASE VOLTAGE/PHASE MONITOR,电流互感器,ENCLOSED NEUTRAL GROUNDING RESISTOR MONITOR,FEMALE QUICK CONNECT,完全可编程的三相电机和泵保护继电器,HINGED TRANSPARENT COVER,VERSATILE UNIVERSAL TIME DELAY RELAY,GROUND-FAULT CIRCUIT INTERRUPTERS,围栏,OCTAL 8-PIN SOCKET,LOW COST RELAY,TEMPERATURE INPUT MONITOR,PLUG-ON ADJUSTMENT MODULE,液位控制,SINGLE-PHASE MONITOR,USB TO RS-232 CONVERTER,METERING TRANSFORMERS,FEEDER PROTECTION SYSTEM,电弧探测器,DETECTOR CABLE,TRANSDUCERS,表面安装套件,MICROPROCESSOR-BASED EARTH-FAULT RELAY,ADVANCED MOTOR PROTECTION ELECTRONIC OVERLOAD RELAY,GROUND-FAULT-RELAY TEST UNIT,LIGHT SENSORS,单相泵监测器,CURRENT TRANSFORMERS,UNIVERSAL VOLTAGE, 3-PHASE VOLTAGE MONITOR,无指示保险丝座,8 QUICK CONNECT TO SCREW ADAPTER,高级接地故障和中性点接地电阻监测继电器,SERIAL CONNECTOR ADAPTER KIT,PLUG-IN, SINGLE-PROBE CONDUCTIVE LIQUID LEVEL CONTROL,MOUNTING BRACKET,TWO-WHEELED CART,TIME DELAY RELAYS,TWO-CHANNEL INTRINSICALLY SAFE SWITCH,单相交流电流传感器,方便经济的MODBUS-TCP和MODBUS-RTU接口,INFORMER FIBER OPTIC KIT,三相电压和频率监控器,接地故障断路器,固定转接头,万能灯报警继电器,模拟%电流表,GROUND-FAULT MONITOR,远程指示和复位组件,铰链式透明盖,远程显示监视器,接地故障指示系统,单相电压监测器,光纤传感器,MOUNTING FRAME,馈线保护装置,INDUSTRIAL SHOCK-BLOCK,MIDGET FUSE,甜甜圈式变压器,INDUSTRIAL REMOTE INDICATION AND RESET KIT,间隔定时器,FEEDER PROTECTION UNIT,单脉冲延时继电器,GROUND-FAULT RELAY TESTER,单相电压/相位监测器,DUAL CHANNEL SWITCH,8-PIN PLUG-IN STYLE SEAL-LEAK DETECTOR,报警控制器/电池充电装置,两轮车,多功能通用延时继电器,REMOTE DIAGNOSTIC TOOL,终端设备,TEMPERATURE INPUT MODULE,QUICK CONNECT,DIP开关,ELECTROMECHANICAL RELAY,TDR4B23,EL3100,RK-325,TDR4B22,SCR,CT-0050-F10,TDI120AL,ECSL4HBH,DLMU,TDML110DL,SD12-PC,KSPSN21B,LLC42B15A,RK-332,SE-TA6ASF-WL,PC-200-LLC-CZ,THDS410.25SA,ZSCT30-31,TSU2000 SERIES,RK-325I,P1004-XX-(X),ORB120A25,P1004-12-X,SE-FLASH,PSC11,TDM24DL,LLC6210F10M,SB6000,FS146RC,SIO-RTD-02-00,LLP-24,FS165-30T,ARPX1S SERIES,233P,RK-105I,NDS-11,50R40029,MPS-RTD,460-15-100-SLD,ESDR423A4,ECSL4HAC,RM1000 NEMA 4,ASXX SERIES,KRDI2110S,ESDR423A3,KRPDA2129RXE,TDB120AL,LLC54AF10,455 SERIES,KRDM223,KRDM220,KRDM221,ORS120A150SD,PGC-31FC,PGM-8325,460-XXX-SP,FS126-45,CT-0800-F30,CT-0400-D20,TSB634,LLC26A1F25C,PLR240A,ECSW3LABT,TSB632,TDUH SERIES,TSDS SERIES,WVM811AH,TDM24AL,LPSM003Z,HRDM SERIES,235P,FA155-2,KSDB315SP,601,SB6100-01X-0,102A,KRPD215S190SMB,601 SERIES,EL731-03-X0,PC-200-LLC-GM,SIR,MPU-32-X69X SERIES,ORS230A150SD,KSD3120A,FPS,ECSW6MBHT,MSM20.15W9,FB9L,HRDR331A1,TSD6 SERIES,TS22120,201575-AU,201-100-SP-DPDT,FS300 SERIES,ECSH31F.08D,FS126-60,TDS SERIES,KRDI220,MSM130W9,KSD2 SERIES,FS500,102A SERIES,201-XXX-SP SERIES,LLC52BA,A0220 SERIES,460-200-SP,ALT230-S-SW,HRDR121A4R,LLC52AA,ORB120A160,P0400-82,TDI SERIES,PC-XXXLLC-CZ SERIES,P0400-83,DCSA5,PC-XXX-LLC-GM,P0400-86,SLR,INFORMER-MS,HRDB321,CT-0150-D10,PGC-4064,HRDB324,KSDB SERIES,FS512,ECSW4MBHT,TSDR612.5SA4.5S,TMV8000 SERIES,TSD2411S,ECSW4MBGT,FS524,CT-XXXX-DXX,KSDR SERIES,RS SERIES,P1004-XX,MPU-32-X69X–XXX00,WVM,SLR1610A,KSD1320,ASQU SERIES,TS1424,TS1423,TS1422,TS1421,HRDR330A0R,TSB222,77C SERIES,T10,CT-1200-F15,NGR SERIES,NGR1080,TS1416,NGR1081,TS1415,HRISW21FT,TS1412,KRPS913MB,HLMUDNAAN,202-575-RP,CT-0300-F10,TSD7621,LSRU-115-OR-2,DCSA50,HLMU,EL731-23-X0,NGR1077,NGR1078,NGRM-ENC-230-00,TRDU24A1,NGR1079,TRDU24A2,AF0100-10,TRDU24A3,SB6100-21X-0,NGR1070,NGR1071,NGR1072,NGR1073,NGR1074,ESDR450A1,NGR1075,NGR1076,ECS40AC,TVM460A75S2M,PMA-16-RTDB,PGR-3200-120,SE-703-0U-0X,ESDR123B4P,FS SERIES,NGR1066,NGR1067,D1100,PLR SERIES,NGR1068,AF0100-00,NGR1069,202,KSDB120P,KRPSD25S,TRM24D1X2,777-HRG-P2,ECS40BC,TRDU120A3,TRDU120A1,TRDU120A2,ERDM4130S,TDS120ALD,LLC14B60AX,ISS-102 SERIES,TDIH SERIES,NGR1050,NGR1051,NGR1052,NGR1053,TVW6510S0.4S,FB230A,CT-0300-F20,KSD3432A,PGE-05KV,DCSA20,LLC2,LLC1,LLC6,NGR1045,LLC5,ALT-XXX-1-SW,LLC4,SE-330AU-XX-0X,TVM230A101S1S,LLC8,SC4 SERIES,T10120,NGR1041,KSPSN13MI,VTP0E,PGE-35KV,FS100,TDB12D,T10S400,TSDR4412SA1,LLC842F103M,TDSL SERIES,KRD92115MB,FPU-32-00-00,201-200-SP-DPDT,KRD92115MA,ECSH4HAD,SE-GRM250,PGR-4300 SERIES,NGR1036,PMA-23,NGR1038,PMA-24,PMA-21,ERDM429,ERDM425,KRDB SERIES,ERDM427,FS590,NGRM-ENC-431-21,ER-72KV,777-MV-P2,240,460-MR,PCR SERIES,TDBL120AL,TS1211.5,EL731-11-X0,CT30S1,LLC4 SERIES,KSDS230,PGC-3140,3506002,FS126,FS127,TSD2434,DSQU SERIE,TDB24DL,T2D120A15M SERIES,TDUSH3001A,ALTXXX-X SERIES,THD7421A,TDUIL3001A,ERDM423,ECS6HAH,ERDM422,TDSH120AL,RS4B12,FPS SERIES,TS13115,PMA-18,HRPSD12HI,PMA-16,KSDU SERIES,PMA-17,LLC825F5M,LSRU-115-AL-3,PMA-14,PMA-15,PMA-12,LSRU-115-AL-2,PMA-13,PMA-10,TSDS421,SE-105,MPS-CTU-01-00,ORM24D13.5,TH1 SERIES,TDUIL3002A,MSM450W6,SE-107,DLMUBLAAA,FS143,TSU2000,FS146,RS1A11,KSPU SERIES,SB5060-20X-0,LLC44B4A,TCR9C,MSM42W6,50R-100-2,TDUB SERIES,THDB SERIES,FS152,777-HP-P2,PGR-8800-00-CC,LSR-XXX,LLC14B15AX,TS441165,PGR-4300,TSD24145S,ASXX,LSRU-115-OU-1.5,KSD2221,ORB,FS162,TA24A5,KRDR424A4,KSDR40A0,TA24A3,HRDR321A4R,TRM24A8Y5,KRDR424A0,TH1C415,TSDR6412SA1,ORM,RK-310X-0Y,SIR1A20A4,ALT115-S-SW,ORS,VMPS,TDIL SERIES,LLC44B2A,VMPU,FPS-CTU-03-00,ORB24A25,BZ1,777-ACCUPOWER,HRPS SERIES,PHST-38QTN,TS2412,LSRX-C,350200,HLMUDRAAA,LLC44B1A,KSD2413M,TRDU SERIES,TSS SERIES,SIR1A1A4,KRPSA24M,TL230A5,ECS2HBC,TS2421,PC-100-LLC-CZ,TS2422,TS2423,PGA-LS20,777-575-HRG-P2,IR KIT-12,TSDR6110SA30S,1N5339B,AC700-SMK,KRDB21180S,KRPSA22B,ER-15KV,PGA-LS30,TDB120ALD,LLC44B5F100,TSS421,ISS-102A-LC,202-200-SP,MPS-469X,TVM480A100.5S3S,KRDM121,ARP43,ARP41,777-KW-P2 SERIES,HRDR431A1R,MPU-32-X69X,TSS424,TSS422,TSD6310.8SN,THDS SERIES,KRPD SERIES,601575,ASTU SERIES,TS121150,PGA-LS10,VTP5N,460L-OEM,TCSA50,LLC44B5A,TDUIL,ELCT,SE-CS40,TDUIH,SE-502,TDR2A23,VTP4B,TSDR215SB18M,VTP4F,NGRUS003,VTP4J,P0200-20,PC-100-LLC-GM,P0200-19,SE-CS30,NGRM-ENC,PCR11,PCR10,TDUL SERIES,PMA-60,WVM611AL,PLS480A,PRLM423,VTP3B,ECSW,PGR-8800-00,PCR13,PCR12,PLM6502,ESDR120A0P,SB5032-21X-0,ESDR424A1,WVM611AH,ERDI436,VTP2C,VTP2A,TDUSL3000A,VTP2F,TCS,VTP2E,ORB SERIES,VTP2J,202-200-SP SERIES,KSPSA21FT,MPS-469X–XX000,SCR490D,THC421C,ELCT30-88,IR KIT-36,VTP2P,TDB,P1004-9,202 SERIES,SE-CS10,TDI,KRDR420A3,ECSL31A,KRDB415S,TDM,TSD7611S,VTP1B,TDS,SERIES,TS141180,TDR,TDU,VTP1D,VTP1C,MSM11W6,MSM210P3,TDB24AL,MPS-RTD-01-00,PGR-6100,PMA-55,PGR-6101,ARP23S,50R200,PLS120A,PGR-6100 SERIES,KSDB330N,KRDB,777-575-TS,FA155,KRDI,ALT115-X,KVM4,KRDM,ALT115-S,ECSH34F.08C,KRDB1120M,TDML120AL,KRDS,EFCT SERIES,KRDR,KVM6,TDUIL SERIES,EL731-04-X0,MPS-469X-PMA24,PGR-2601,THD1B410.5S,201-100-DPDT,AF0500 SERIES,ECS40A,SE-TA6A SERIES,TDM12DL,NGRM-ENC-231-01,TSDR442MA2,ELCT5,77C-KW SERIES,KRD3,FS219-45,ISS-102AA-DCS,TH1,A0220.0040,KRD9,KSDB1115SP,TDR4A23,MPU-32-X69X-PMA16,KVM,KRDM1110S,EFCT-26,111P,FS126RC-45,THC,T,MCCS,COMMERCIAL,塔照明,LIQUID LEVEL CONTROL,FEEDER CIRCUITS,DRIVES,REMOTE INDICATION,3-PHASE SYSTEMS,水/废水,HVAC,NGR监控,WATER/WASTEWATER,液位控制,GROUNDING RESISTORS,塔楼,接地导体监测,PUMP PROTECTION,障碍照明控制,PANELBOARDS,硬币自动售货机,GROUND-FAULT PROTECTION,RESISTANCE GROUNDING MONITORING,电阻接地监测,NGR MONITORING,远程指示,TOWER,RESISTANCE-GROUNDED SYSTEMS,商业的,HVACR,GENERATOR,驱动器,泵保护,MOTOR PROTECTION,OBSTRUCTION LIGHTING CONTROL,暖通空调,REMOTE MONITORING,配电板,PORTABLE EQUIPMENT,SMARTPHONE APPLICATION,电阻接地系统,PUMP,COIN VENDING,开关设备,三相系统,便携式设备,FEEDER PROTECTION,远程监控,工业,GROUND-CONDUCTOR MONITORING,配电盘,馈线电路,OBSTRUCTION LIGHTING,塔台控制,智能手机应用程序,电动机保护,电弧闪光保护,MCC,TOWER CONTROL,馈线保护,接地电阻器,TOWER LIGHTING,障碍照明,INDUSTRIAL,发生器,ARC-FLASH PROTECTION,泵,接地故障保护,SWITCHGEAR,SWITCHBOARDS
AF0100 系列保护继电器和控制 弧闪保护 – 监测
本资料主要介绍了弧闪保护系统及其在电力系统及工业配电领域中的应用。资料详细阐述了弧闪事故的危害，包括设备损坏、人员伤亡和生产停运损失等。介绍了弧光保护的基本原理，包括弧闪释放能量、弧闪事故持续时间以及保护装置的清除时间。此外，资料还介绍了弧光传感器，包括点式传感器和光纤传感器，以及弧光保护继电器AF0100系列的功能和优势，如体积小巧、双路传感器输入、可调光敏性等。
LITTELFUSE - 弧光保护继电器,即插即用型弧光保护装置,保护继电器,AF0100-00,AF0100 系列,AF0100-10,AF0100,工业配电领域,变压器,小型配电系统,整流柜,电力系统,保护单个开关柜,母排,弧闪应用,电容柜,发电机
AF0500 D1000 PGR-8800保护继电器符合UL认证（UL-US-L348169-11-80112102-3）
本文件为UL认证合规证书，证明LITTELFUSE INC公司生产的AF0500、D1000和PGR-8800型号开放式保护继电器符合UL-US-L348169-11-80112102-3和UL-CA-L348169-31-80112102-3标准。证书表明产品已通过UL评估，但需授权后方可使用UL标志。
LITTELFUSE - PROTECTIVE RELAYS,保护继电器,AF0500,D1000,PGR-8800
【产品】最大输入功率2w的双通道本安型保护继电器ISS-102，符合IEC 61000安全要求
Littelfuse推出的ISS-102是一款双通道本安型保护继电器，用于多种用途，可作为泵送/抽空（锁定）控制器或双通道开关。LED指示本安型输入和输出继电器的状态，并提供用户可选选项，包括浮点输入的可变电阻阈值。ISS-102外壳可安装在表面或DIN导轨上。ISS-102双通道保护继电器的工作温度范围为-20°至55°C(-4°至131°F)，最大输入功率2w。
【经验】力特智能电机保护继电器777-P2——专业助力减少电机使用过程中的损耗问题
电机保护继电器可防止由过流、相位、电压不平衡等问题引起的电机损耗或停机。与老式过载继电器不同，现代继电器基于智能电子可以让操作员得知什么情况下将会触发宕机。本文介绍通常遇到的报警类型并提供正确的反应措施。
保护继电器符合UL认证（UL-US-L348169-12-02107102-2）
本证书证明LITTELFUSE INC的产品符合UL-US-L348169-12-02107102-2和UL-CA-L348169-32-02107102-2安全标准。产品包括开放式保护继电器和光纤传感器，经UL评估，符合UL 508、IEEE C37.90和IEEE C37.90.1等标准要求。证书不授权使用UL标志，仅授权页提供持续监督程序的引用，授权使用UL标志。
LITTELFUSE - PROTECTIVE RELAYS,光纤传感器,FIBER SENSORS,保护继电器,AF0100-00,AF0100-10,AF0100-A0,PGA-LS30,PGA-LS10,PGA-LS20,AF0100-00-CC,AF0100-A0-CC,AF0100-10-CC
【产品】基于微处理器的弧闪保护继电器，检测到故障可在不到一毫秒的时间内触发跳闸触点
LITTELFUSE公司的基于微处理器的弧闪保护继电器AF0500，包含以太网接口和USB接口，并支持Modbus TCP通讯。该继电器有故障安全系统，支持4个电弧传感器输入，2 IGBT高速跳闸输出，有LED指示，可以分立式线路连网，多台AF0500设备可互相连接组成一个系统。
电机保护继电器
Littelfuse公司提供多种电动机保护继电器，包括PGR-6100、PGR-6130、PGR-6150系列，用于保护电动机免受过载、短路、接地故障和过热等损害。这些继电器具备在线和离线监测功能，包括绝缘电阻监测、电流和温度监测，以及故障指示。产品适用于电动机、泵、变频驱动器等设备，旨在提高设备可靠性和安全性。
LITTELFUSE - 电动机保护装置,电机接地故障和绝缘继电器,PUMP PROTECTION RELAY,电机保护继电器,电子过载继电器,电动机保护系统,MOTOR PROTECTION UNIT,MOTOR GROUND-FAULT & INSULATION RELAY,ELECTRONIC OVERLOAD RELAY,MOTOR PROTECTION RELAYS,泵保护继电器,MOTOR PROTECTION SYSTEM,PGR-6150,PGR-6130,PGR-6100,MPU-32,PGR-6800,ELECTRICAL DISTRIBUTION,配电盘,MOTOR CONTROL CENTER,马达,SPORTABLE POWER CABLES,可运动的电源线,PUMPS,过程控制面板,电机控制中心,水泵,开关设备,POWER DISTRIBUTION PANELS,变频驱动器,PROCESS CONTROL PANELS,VARIABLE FREQUENCY DRIVES,配电,MOTORS,SWITCHGEAR
SE-330AU系列保护继电器和控制器
SE-330AU系列是Littelfuse公司推出的高级接地故障和接地电阻监测继电器，适用于低压和中等电压变压器和发电机。该继电器符合AS/NZS 2081.6:2011和AS/NZS 2081.8:2011标准，能够监测中性电流、中性到地电压和中性到地电阻，确保中性接地电阻（NER）完好。它提供四个继电器输出和一个模拟输出，并支持网络通信和长期数据记录。
LITTELFUSE - 中性点接地电阻监测器,保护继电器和控制装置,ADVANCED EARTH-FAULT AND EARTHING-RESISTOR MONITORING RELAY,PROTECTION RELAYS & CONTROLS,NEUTRAL-EARTHING-RESISTOR MONITOR,高级接地故障和接地电阻监测继电器,SE-330AU SERIES,SE-330AU-XX-0X,SE-330AU,MEDIUM-VOLTAGE TRANSFORMERS,低压变压器,中压变压器,GENERATORS,LOW-VOLTAGE TRANSFORMERS,发电机
ISS-101保护继电器
该资料介绍了Littelfuse公司的单通道本质安全继电器ISS-101。这是一种用于在危险区域和非危险区域之间接口的设备，符合UL 913标准。它具有紧凑的设计，适用于DIN轨道或表面安装，并带有LED状态指示灯。此外，还提供了输入和输出规格、尺寸、重量以及认证信息。
LITTELFUSE - 本质安全继电器,INTRINSICALLY SAFE RELAYS,SWITCHES,开关,PROTECTION RELAYS,单通道本安开关,SINGLE-CHANNEL INTRINSICALLY SAFE SWITCH,保护继电器,ISS-101
NGRM-ENC系列保护继电器中性点接地电阻监测
该资料介绍了Littelfuse公司的中性接地电阻（NGR）监控器系列产品，包括NGRM-ENC系列和ER系列。这些产品用于监测变压器或发电机的中性到地连接中的电流、电压和中性接地电阻的连续性，适用于加拿大市场的2018年CEC 22.1标准。
LITTELFUSE - 封闭中性点接地电阻（NGR）监测器,PROTECTION RELAYS,ENCLOSED NEUTRAL-GROUNDING-RESISTOR (NGR) MONITOR,保护继电器,NGRM-ENC-241-00,NGRM-ENC-540-00,NGRM-ENC-431-21,NGRM-ENC-000-01,NGRM-ENC-430-00,NGRM-ENC-000-00,NGRM-ENC-540-10,NGRM-ENC SERIES,NGRM-ENC-230-00,NGRM-ENC-231-01,NGRM-ENC-200-20,NGRM-ENC-201-10,NGRM-ENC-201-21,NGRM-ENC-201-20,NGRM-ENC-200-00,NGRM-ENC,NGRM-ENC-200-10,NGRM-ENC-201-00,NGRM-ENC-200-01,NGRM-ENC-331-01,NGRM-ENC-401-20,NGRM-ENC-530-11,NGRM-ENC-401-00
Littelfuse Startco保护继电器技术说明-电阻接地RG-12：在不接地系统上实施电阻接地
本资料介绍了在未接地系统中实现电阻接地的方法。通过使用Z型变压器建立人工中性点，并结合中性接地电阻（NGR）实现电阻接地，以保护系统免受电弧接地故障引起的瞬态过电压。资料还涉及了使用Littelfuse Startco SE-330或SE-325监控NGR的重要性，以及如何通过脉冲NGR系统调节接地故障电流以帮助定位故障。
LITTELFUSE - PROTECTION RELAYS,保护继电器,RG-12
SE-330、SE-330HV系列保护继电器中性点接地电阻监测
该资料介绍了Littelfuse公司的SE-330和SE-330HV系列中性接地电阻监测继电器。这些继电器符合加拿大电气规范第I部分的Rule 10-302，用于测量中性电流、中性到地电压和中性到地电阻。它们提供连续的中性到地路径监控，以验证中性接地电阻（NGR）是否完好无损且未被绕过或短路。适用于低中压变压器和发电机，用于加工、制造、化工、纸浆造纸、石油和水处理设施。
LITTELFUSE - NEUTRAL-GROUNDING-RESISTOR MONITOR,中性点接地电阻监测器,高级接地故障和中性点接地电阻监测继电器,ADVANCED GROUND-FAULT AND NEUTRAL-GROUNDING-RESISTOR MONITORING RELAY,PROTECTION RELAYS,保护继电器,SE-330HV,SE-330-XX-0X,SE-330,SE-330HV SERIES,SE-330AU,SE-330 SERIES
ARP系列保护继电器：交流继电器
该资料介绍了Littelfuse公司的ARP系列交流继电器。这些继电器用于需要在两个电机之间实现相等运行时间的系统。它们具有交替或电锁操作功能，可通过选择开关进行控制，并带有LED状态指示灯。继电器可以安装在前面板上（需BZ1附件）或35毫米DIN轨道上，并提供多种型号和配置。
LITTELFUSE - 交流继电器,PROTECTION RELAYS,ALTERNATING RELAYS,保护继电器,ARP23S,NDS-8,ARP41S,ARP43,ARP63S,ARP42S,ARP41,ARP43S,ARP61S,ARP62S,NDS-11,PSC11,AR120A-3095,ARP SERIES,C103PM,BZ1,PSC8,ARP
234-P保护继电器
该资料介绍了Littelfuse公司的PumpSaver® Plus Model 234-P单相泵监控器。这款产品旨在保护单相水泵免受干井、死头、快速循环、卡住叶轮和过压/欠压条件的影响。它适用于住宅水井、商业水井、灌溉井和高尔夫球场及其他喷灌系统。Model 234-P设计用于安装在Grundfos控制箱内，以保护1/3至3马力、两线或三线、230伏的水泵。
LITTELFUSE - SINGLE-PHASE PUMP MONITOR,单相泵监测器,PROTECTION RELAYS,保护继电器,234-P
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