PGR-4300-24

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.

LITTELFUSE  -  PGR-4300,丁字轨,万能灯报警继电器,三相电压和频率监控器,三相电压监测器,三相电流电压监测仪,三相电源监控器,不接地直流系统,两轮车,中功率闪光器,中性点接地电阻,中性点接地电阻监测器,中性点接地电阻系统,串行接头适配器套件,二极管逻辑单元,二极管逻辑模块,五通道本安开关,交流电流传感器,交流系统监视器,交流继电器,交直流敏感接地漏电继电器,以微处理器为基础的数据采集系统,仪表变压器,传感器,传感电阻,低成本相敏控制,低成本继电器,低泄漏交流闪光器,低液位截止液位控制,低电流闪光器,保护改装套件,保护继电器,保险丝座,信息员光纤套件,光传感器,光感传感器,光纤传感器,全可编程电子过载继电器,全固态定时模块,全固态延时定时模块,八角插座,八路插入式液位控制,内螺纹快接端子,切换控制,前面板安装套件,剪辑,单探头导电液位控制,单相交流电流传感器,单相欠压监测仪,单相泵监测器,单相电动机,单相电压监测器,单相电流电压监测仪,单相电流监测仪,单相监测仪,单脉冲延时继电器,单通道密封检漏仪,单通道液位传感器,双探头导电液位控制器,双绞线,双通道开关,双通道本安开关,反旋钮,发电机接地故障继电器,可再触发单次计时器,可靠的机电继电器,回路供电的线性输出电流传感器,围栏,固体接地系统,固定夹,固定转接头,固态电子器件,固态继电器,基于微处理器的接地故障继电器,基于微处理器的组合地线监测器和接地故障继电器,基于微控制器的载荷传感器系列,多功能通用延时继电器,安装支架,安装架,安装适配器,完全可编程电子功率监控器,完全可编程的三相电机和泵保护继电器,完全可编程的泵保护继电器,完全可编程的电压监控器,密封检漏仪,封闭式中性接地电阻监测器,小型保险丝,小型端接组件,工业减震块,工业远程指示和重置套件,工厂编程延时继电器,工厂编程模块,差动电流模块,平行路径隔离,延时继电器,开关,开板液位控制,微处理机继电器,微机型交直流灵敏漏电继电器,微机型闪弧继电器,微机接地故障继电器,快速连接,快速连接到螺钉适配器,手动远程重置套件,手持式诊断工具,括号,指示保险丝座,探测器电缆,探针架,接地参考模块,接地故障和相电压指示器,接地故障指示系统,接地故障接地检查监视器,接地故障断路器,接地故障电流互感器,接地故障监视器,接地故障继电器测试仪,接地故障继电器测试单元,接地漏电监测器,接通延迟定时器,控制单元,插入式单探头导电液位控制器,插入调节模块,插座,数字定时器,数字电子电路和机电式继电器,无指示保险丝座,时间调整拨盘,智能电机保护继电器,有脚的变压器,未接地交流系统,本质安全继电器,机电继电器,模拟延迟闭合定时器,模拟欧姆表,欠电流监测器,母快速接头,水密盖,泵控制装置,液位传感器,液位探头,液位控制,液位控制继电器,温度控制器,温度输入模块,温度输入监视器,灵敏电流互感器,点传感器,照片控制,环形电流传感器,甜甜圈式变压器,电动机保护系统,电动机保护装置,电压监测器,电压监测器附件模块,电压监测继电器,电子兆欧表,电弧探测器,电弧检测点传感器,电弧检测装置,电弧闪光继电器,电机保护继电器,电机保护继电器改装套件,电机接地故障和绝缘继电器,电机监控装置,电极,电流互感器,电流传感器,电流指示器,电流监测继电器,电流输入模块,监测系统,监视器控制面板,盖,直流接地故障监测器,相位控制,相电流互感器,磁力插座,端口供电串行转换器,紧凑型延时继电器,组合地线监控器和接地故障继电器,终端组件,终端设备,绝缘监测仪,继电器测试器,自供电接地故障和相电压指示系统,自供电负荷传感器,蓝牙电流和电压监控器,螺柱安装端接组件,螺纹探针,表面安装套件,表面贴装适配器,计时器,计量变压器,负荷传感器,负载传感器,转换器,转接板,输出模块,远程复位模块,远程指示和复位组件,远程指示组件,远程显示监视器,远程监控器,远程诊断工具,通信模块,通信适配器,通用电压延时闭合定时器,重型电压监测器,铰链式透明盖,镧压敏电阻器,长方槽,闪光灯,闪光灯和白炽灯报警继电器,闪弧继电器,间隔定时器,防护靴,防水盖,防潮外壳套件,降压模块,障碍灯报警继电器,非指示保险丝座,面板安装适配器,馈线保护系统,馈线保护系统监视器,馈线保护装置,高压耦合器,高级接地故障和中性点接地电阻监测继电器,高级接地故障和接地电阻监测继电器,高级电机保护电子过载继电器,11-PIN插座,11引脚8通道插入式电压监控器,11引脚磁性插座螺丝端子,12引脚矩形插座,5通道泵控制器,8引脚8基插入式电压监控器,8引脚插入式密封检漏仪,8快速连接至螺纹接头,8针八进制插座,8针插入式交流继电器,DIN导轨安装适配器,DIN导轨适配器,DIN导轨适配器夹,DIP开关,NGR监测器,P型夹,STARTCO改装套件,USB到RS-232转换器,“智能”五通道本质安全型继电器,三相、自动调整量程、双量程电压监控器,三相电压/相位监测器,两用报警控制器/电池充电装置,低成本、单探针导电液位控制器,八进制8针插座,单相电压/相位监测器,单相，交流窗口，电流传感器,双通道，本质安全开关,固态3通道追踪器,固态4通道追逐器,固态开/关循环定时器,多功能、旋钮可调、通用延时继电器,封装固态，延迟制造计时器,工业RS-485转RS-232转换器,开/关或关/开循环定时模块,报警控制器/电池充电装置,接地交流/直流系统,方便经济的MODBUS-TCP和MODBUS-RTU接口,方便经济的PROFIBUS接口,模拟%电流表,精确、固态、延迟间隔计时器,通用电压，3相电压监控器, 3-PHASE VOLTAGE MONITOR, AC WINDOW, AUTO-RANGING, COMBINATION GROUND-WIRE MONITOR AND GROUND-FAULT RELAY, CURRENT SENSORS, DELAY-ON-BREAK TIMING MODULE, DELAY-ON-MAKE TIMERS, DELAYED INTERVAL TIMER, DUAL-RANGE VOLTAGE MONITOR, INTRINSICALLY-SAFE SWITCH, KNOB ADJUSTABLE, LINEAR OUTPUT CURRENT TRANSDUCER, PLUG-IN VOLTAGE MONITOR, SINGLE-PROBE CONDUCTIVE LIQUID LEVEL CONTROL, SOLID-STATE, UNIVERSAL TIME DELAY RELAY,11-PIN MAGNAL SOCKET SCREW TERMINALS,11-PIN OCTAL BASE PLUG-IN VOLTAGE MONITOR,11-PIN SOCKET,12-PIN RECTANGLE SOCKET,3-PHASE,3-PHASE CURRENT & VOLTAGE MONITOR,3-PHASE POWER MONITOR,3-PHASE VOLTAGE & FREQUENCY MONITOR,3-PHASE VOLTAGE MONITOR,3-PHASE VOLTAGE/PHASE MONITOR,5-CHANNEL PUMP CONTROLLER,8 QUICK CONNECT TO SCREW ADAPTER,8-PIN OCTAL SOCKET,8-PIN OCTAL-BASE,8-PIN PLUG-IN ALTERNATING RELAYS,8-PIN PLUG-IN STYLE SEAL-LEAK DETECTOR,AC CURRENT SENSORS,AC SYSTEM MONITORS,AC/DC SENSITIVE EARTH-LEAKAGE RELAY,ACCURATE,ADAPTER PLATE,ADVANCED EARTH-FAULT AND EARTHING-RESISTOR MONITORING RELAY,ADVANCED GROUND-FAULT AND NEUTRAL-GROUNDING- RESISTOR MONITORING RELAY,ADVANCED MOTOR PROTECTION ELECTRONIC OVERLOAD RELAY,ALARM CONTROLLER / BATTERY CHARGING UNIT,ALTERNATING RELAYS,ANALOG % CURRENT METER,ANALOG DELAY-ON-MAKE TIMER,ANALOG OHM METER,ARC DETECTING POINT SENSOR,ARC DETECTION UNIT,ARC DETECTOR,ARC-FLASH RELAY,ARC-FLASH RELAYS,BLUETOOTH CURRENT & VOLTAGE MONITOR,BRACKETS,CLIPS,COMBINATION GROUND-WIRE MONITOR AND GROUND-FAULT RELAY,COMMUNICATION ADAPTERS,COMMUNICATION MODULES,COMPACT TIME DELAY RELAY,CONTROL UNIT,CONVENIENT AND COST- EFFECTIVE MODBUS-TCP AND MODBUS-RTU INTERFACE,CONVENIENT AND COST-EFFECTIVE PROFIBUS INTERFACE,CONVERTER,COVER,CTS,CURRENT INDICATORS,CURRENT INPUT MODULE,CURRENT MONITORING RELAYS,CURRENT SENSORS,CURRENT TRANSDUCERS,CURRENT TRANSFORMERS,DC GROUND-FAULT MONITOR,DETECTOR CABLE,DIFFERENTIAL CURRENT MODULE,DIGI-TIMER,DIGITAL ELECTRONIC CIRCUITRY AND ELECTROMECHANICAL RELAY,DIN RAIL,DIN RAIL ADAPTER,DIN RAIL MOUNT ADAPTER,DIN RAIL MOUNT ADAPTOR,DIN-RAIL ADAPTER CLIP,DIODE LOGIC MODULE,DIODE LOGIC UNIT,DIP SWITCH,DONUT STYLE TRANSFORMER,DUAL CHANNEL SWITCH,DUAL PURPOSE ALARM CONTROLLER/BATTERY CHARGING UNIT,DUAL-CHANNEL SWITCH,DUAL-PROBE CONDUCTIVE LIQUID LEVEL CONTROL,EARTH-FAULT CURRENT TRANSFORMER,EARTH-LEAKAGE MONITOR,ELECTRODE,ELECTROMECHANICAL RELAY,ELECTRONIC MEGOHMMETER,ENCAPSULATED SOLID-STATE,ENCLOSED NEUTRAL GROUNDING RESISTOR MONITOR,ENCLOSURES,FACTORY PROGRAMMED MODULE,FACTORY PROGRAMMED TIME DELAY RELAY,FEEDER PROTECTION SYSTEM,FEEDER PROTECTION SYSTEM MONITORS,FEEDER PROTECTION UNIT,FEMALE QUICK CONNECT,FEMALE QUICK CONNECT TERMINALS,FIBER-OPTIC SENSOR,FIVE-CHANNEL INTRINSICALLY SAFE SWITCH,FLASHER & INCANDESCENT BEACON ALARM RELAY,FLASHERS,FOOTED STYLE TRANSFORMER,FRONT PANEL MOUNT KIT,FULLY PROGRAMMABLE ELECTRONIC OVERLOAD RELAY,FULLY PROGRAMMABLE ELECTRONIC POWER MONITOR,FULLY PROGRAMMABLE PUMP PROTECTION RELAYS,FULLY-PROGRAMMABLE 3-PHASE MOTOR AND PUMP PROTECTION RELAY,FULLY-PROGRAMMABLE VOLTAGE MONITOR,FUSE HOLDERS,GENERATOR GROUND-FAULT RELAY,GROUND REFERENCE MODULE,GROUND REFERENCE MODULES,GROUND-FAULT & PHASE-VOLTAGE INDICATOR,GROUND-FAULT CIRCUIT INTERRUPTERS,GROUND-FAULT CTS,GROUND-FAULT CURRENT TRANSFORMER,GROUND-FAULT GROUND-CHECK MONITOR,GROUND-FAULT INDICATION SYSTEM,GROUND-FAULT MONITOR,GROUND-FAULT RELAY TESTER,GROUND-FAULT-RELAY TEST UNIT,GROUNDED AC/DC SYSTEM,HAND-HELD DIAGNOSTIC TOOL,HEAVY-DUTY VOLTAGE MONITOR,HIGH TENSION COUPLERS,HIGH-TENSION COUPLERS,HINGED TRANSPARENT COVER,HOLD-DOWN CLIPS,INDICATING FUSE HOLDER,INDUSTRIAL REMOTE INDICATION AND RESET KIT,INDUSTRIAL RS-485 TO RS-232 CONVERTER,INDUSTRIAL SHOCK-BLOCK,INFORMER FIBER OPTIC KIT,INSTRUMENTATIONTRANSFORMERS,INSULATION MONITOR,INTERVAL TIMER,INTRINSICALLY SAFE RELAYS,LA VARISTOR,LIGHT SENSOR,LIGHT SENSORS,LIQUID LEVEL CONTROL,LIQUID LEVEL CONTROL RELAY,LIQUID LEVEL CONTROL RELAYS,LIQUID LEVEL CONTROLS,LIQUID LEVEL PROBE,LIQUID LEVEL SENSOR,LOAD SENSOR,LOAD SENSORS,LOOP-POWERED,LOW COST,LOW COST PHASE SENSITIVE CONTROL,LOW COST RELAY,LOW COST RELAYS,LOW CURRENT FLASHER,LOW LEAKAGE AC FLASHER,LOW LEVEL CUTOFF LIQUID LEVEL CONTROL,MAGNAL SOCKET,MANUAL REMOTE RESET KIT,MED POWER FLASHER,MEDIUM POWER FLASHER,METERING TRANSFORMERS,MICROCONTROLLER-BASED FAMILY OF LOAD SENSORS,MICROPROCESSOR-BASED,MICROPROCESSOR-BASED AC/DC SENSITIVE EARTH-LEAKAGE RELAY,MICROPROCESSOR-BASED ARC-FLASH RELAY,MICROPROCESSOR-BASED DATA-ACQUISITION SYSTEM,MICROPROCESSOR-BASED EARTH-FAULT RELAY,MICROPROCESSOR-BASED GROUND-FAULT RELAY,MICROPROCESSOR-BASED RELAY,MIDGET FUSE,MOISTURE-RESISTANT ENCLOSURE KIT,MONITOR CONTROL PANEL,MONITORING SYSTEMS,MOTOR GROUND-FAULT & INSULATION RELAY,MOTOR PROTECTION RELAY,MOTOR PROTECTION RELAY RETROFIT KIT,MOTOR PROTECTION SYSTEM,MOTOR PROTECTION UNIT,MOTOR-MONITORING DEVICE,MOUNT ADAPTER,MOUNTING ADAPTER,MOUNTING ADAPTERS,MOUNTING BRACKET,MOUNTING FRAME,MULTIFUNCTION,NEUTRAL GROUNDING RESISTOR SYSTEM,NEUTRAL-GROUNDING-RESISTOR,NEUTRAL-GROUNDING-RESISTOR MONITOR,NGR MONITOR,NON-INDICATING FUSE HOLDER,NON-INDICATING FUSE HOLDERS,OBSTRUCTION LAMP ALARM RELAY,OCTAL 8-PIN SOCKET,OCTAL PLUG-IN LIQUID LEVEL CONTROL,OCTAL SOCKET,ON-DELAY TIMER,ON/OFF OR OFF/ON RECYCLING TIMING MODULE,OPEN BOARD LIQUID LEVEL CONTROL,OUTPUT MODULE,P CLAMP,PANEL-MOUNT ADAPTERS,PARALLEL PATH ISOLATOR,PHASE CONTROL,PHASE CURRENT TRANSFORMERS,PHOTO CONTROL,PLUG-IN,PLUG-ON ADJUSTMENT MODULE,POINT SENSOR,PORT-POWERED SERIAL CONVERTER,PROBE HOLDER,PROTECTION RELAYS,PROTECTION RETROFIT KIT,PROTECTIVE BOOT,PUMP CONTROLS,QUICK CONNECT,QUICK CONNECT TO SCREW ADAPTER,RECTANGLE SOCKET,RELAY TESTERS,RELIABLE ELECTROMECHANICAL RELAY,REMOTE DIAGNOSTIC TOOL,REMOTE DIAGNOSTICS TOOL,REMOTE DISPLAY MONITOR,REMOTE INDICATION AND RESET ASSEMBLY,REMOTE INDICATION ASSEMBLY,REMOTE MONITOR,REMOTE RESET MODULE,RETRIGGERABLE SINGLE-SHOT TIMER,SEAL-LEAK DETECTOR,SELF-POWERED GROUND-FAULT AND PHASE-VOLTAGE INDICATION SYSTEM,SELF-POWERED LOAD SENSOR,SENSING RESISTOR,SENSITIVE CURRENT TRANSFORMER,SERIAL CONNECTOR ADAPTER KIT,SINGLE PROBE CONDUCTIVE LIQUID LEVEL CONTROL,SINGLE SHOT TIME DELAY RELAY,SINGLE-CHANNEL LIQUID LEVEL SENSOR,SINGLE-CHANNEL SEAL-LEAK DETECTOR,SINGLE-PHASE,SINGLE-PHASE AC CURRENT SENSORS,SINGLE-PHASE CURRENT & VOLTAGE MONITOR,SINGLE-PHASE CURRENT MONITOR,SINGLE-PHASE MONITOR,SINGLE-PHASE MOTORS,SINGLE-PHASE PUMP MONITOR,SINGLE-PHASE UNDERVOLTAGE MONITOR,SINGLE-PHASE VOLTAGE MONITOR,SINGLE-PHASE VOLTAGE/PHASE MONITOR,SMALL-FORMAT TERMINATION ASSEMBLY,SMART MOTOR PROTECTION RELAY,SOCKETS,SOLID-STATE 3 CHANNEL CHASERS,SOLID-STATE 4 CHANNEL CHASERS,SOLID-STATE ELECTRONIC DEVICE,SOLID-STATE ON/OFF RECYCLING TIMER,SOLID-STATE RELAY,SOLIDLY-GROUNDED SYSTEMS,STARTCO RETROFIT KITS,STUD-MOUNT TERMINATION ASSEMBLY,SURFACE-MOUNT ADAPTER,SURFACE-MOUNT KIT,SWITCHES,SWITCHING CONTROLS,TEMPERATURE CONTROLLER,TEMPERATURE INPUT MODULE,TEMPERATURE INPUT MONITOR,TERMINATION ASSEMBLY,TERMINATION DEVICE,THREADED PROBE,TIME ADJUSTMENT DIALS,TIME DELAY RELAYS,TIME-DELAY RELAYS,TIMERS,TOROIDAL CURRENT SENSOR,TOTALLY SOLID-STATE,TOTALLY SOLID-STATE TIMING MODULE,TRANSDUCERS,TWISTED-PAIR WIRE,TWO-CHANNEL,TWO-CHANNEL INTRINSICALLY SAFE SWITCH,TWO-WHEELED CART,UNDERCURRENT MONITORS,UNGROUNDED AC SYSTEMS,UNGROUNDED DC SYSTEM,UNIVERSAL LAMP ALARM RELAY,UNIVERSAL VOLTAGE,UNIVERSAL VOLTAGE DELAY-ON-MAKE TIMERS,USB TO RS-232 CONVERTER,VERSA-KNOB,VERSATILE UNIVERSAL TIME DELAY RELAY,VOLTAGE MONITOR,VOLTAGE MONITOR ACCESSORY MODULE,VOLTAGE MONITORING RELAYS,VOLTAGE REDUCTION MODULE,WATERTIGHT COVER,WATERTIGHT COVERS,“SMART” FIVE-CHANNEL INTRINSICALLY SAFE 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,T,三相系统,便携式设备,发生器,商业的,塔台控制,塔楼,塔照明,工业,开关设备,接地导体监测,接地故障保护,接地电阻器,智能手机应用程序,暖通空调,泵,泵保护,电动机保护,电弧闪光保护,电阻接地监测,电阻接地系统,硬币自动售货机,远程指示,远程监控,配电板,配电盘,障碍照明,障碍照明控制,馈线保护,馈线电路,驱动器,NGR监控,水/废水,3-PHASE SYSTEMS,ARC-FLASH PROTECTION,COIN VENDING,COMMERCIAL,DRIVES,FEEDER CIRCUITS,FEEDER PROTECTION,GENERATOR,GROUND-CONDUCTOR MONITORING,GROUND-FAULT PROTECTION,GROUNDING RESISTORS,HVAC,HVACR,INDUSTRIAL,LIQUID LEVEL CONTROL,MCC,MCCS,MOTOR PROTECTION,NGR MONITORING,OBSTRUCTION LIGHTING,OBSTRUCTION LIGHTING CONTROL,PANELBOARDS,PORTABLE EQUIPMENT,PUMP,PUMP PROTECTION,REMOTE MONITORING,REMOTE INDICATION,RESISTANCE GROUNDING MONITORING,RESISTANCE-GROUNDED SYSTEMS,SMARTPHONE APPLICATION,SWITCHBOARDS,SWITCHGEAR,TOWER,TOWER CONTROL,TOWER LIGHTING,WATER/WASTEWATER

【选型】Littelfuse（力特）保护继电器选型指南

产品安全、应用及快速选型指引介绍    接地故障保护    电动机和泵保护    电动机保护更新    辅助监控    馈线保护    继电器软件    继电器测试设备    附件    保护概述    术语表    接地故障保护    电动机保护    辅助监控    电流互感器应用    电阻接地转换    接线图    IEEE/ANSI编号    中线接地电阻器和电流互感器规格表    快速参考指南   

LITTELFUSE  -  PGR-4300,中线接地电阻器,中线接地电阻器检查监控器,中线接地电阻器监控器,串行接头适配器套件,保护继电器,发电机接地故障继电器,固件更新实用程序,安装托架,带有引线的小型终端,带有引线的小型终端总集,并行路径隔离器,接地参考模块,接地故障保护系统,接地故障保护继电器,接地故障和接地检查监控器,接地故障和接地连续性探测器,接地故障和绝缘监控器,接地故障显示系统,接地故障电流互感器,接地故障继电器,接地故障继电器测试仪,接地故障继电器测试装置,接地检查保护继电器,接地检测监控器,无需电流互感器,更新套件,未接地的交流系统,标准铁芯电流互感器,检测电阻器,模拟欧姆表,模拟百分数电流表,求保护继电器,泵保护继电器,温度监控器,温度输入模块,温度输入监控器,灵敏型接地故障继电器,电动机,电动机保护系统,电动机保护系统更新套件,电动机保护继电器,电动机保护继电器更新套件,电动机和泵保护继电器,电动机接地故障和绝缘继电器,电子过载继电器,电流互感器,监控器,直接和电阻接地的系统,直流接地故障继电器,端口加电的串行转换器,终端和适配器,终端总集,绝缘监控器,继电器界面模块,继电器界面软件,继电器软件,虚拟电动机保护系统,虚拟电动机保护继电器,虚拟馈线保护继电器,螺柱安装终端总集,转换套件,辅助监控器,输入模块,远程显示和复位总集,远程显示总集,远程显示总集模块,适配器板,通量调节器,防水盖,面板安装适配器,馈线保护继电器,馈线保护装置,高压耦合器,高级电动机保护系统,高级电动机保护装置,USB到RS-232转换器,工业RS485到RS232转换器,CT,CTS,PGR-4300-24,SE-330-01-00,RK-325,PGC-3000,PR,RK-3251,PGK0013,PGK0014,PGH FAMILY,PGR-6300-01-00,PGC-6210,PGC-3000-,DFR,PPI-600V,PGA-0510,PGC-60,三相中低压中高等功率的感应电动机提供保护,与电阻温度检测器一起准确地测量温度,仪表板,保护跳闸电路,保护跳闸电路或报警显示电路,发电机,变压器,可便携式设备,可携式设备,开关设备,开关设备和多元件电路,报警显示电路中,接地电阻器,现有电流互感器来更新和升级电动机保护,电动机和泵,电阻和直接接地系统的接地故障继电器,电阻接地或直接接地系统,监控大型移动设备上带有控制线的拖曳缆,选择性的电流和欧姆表和两个分开的报警继电器,配电盘,配电盘和仪表盘,预测性维护,馈电线路,馈电路线,驱动装置,120/208伏可便携式发电机和长距离电热管应用,从工业级24伏(直流)控制电路到运输系统1000伏(直流)的未接地直流系统,保护加工制造、石油、化工和废水处理设备中的配电馈线,在工业环境中监控4到20毫安模拟输出装置,地下矿井的5千伏及5千伏以下拖曳电缆上,多元件电路（MCC),工业环境中使用的三相电动机提供以电流和温度为基础的保护、测量和数据记录,最高25千伏的电阻接地系统,泵、输送机皮带、通风机和需要有标准保护的其他小型电动机应用,用于测试电流检波水平、时间延迟和接地故障保护的协调性,MCC

PGR-4300系列（GFA300）保护继电器和控制器

该资料介绍了PGR-4300系列发电机接地故障继电器。它是一种无需电流互感器（CT）即可检测发电机接地故障条件的简单设备，适用于空间有限无法安装CT的情况。该继电器与三相和四极转换开关兼容，并监测中性到地路径的连续性。

LITTELFUSE  -  PGR-4300,保护控制,保护继电器,发电机接地故障继电器,GENERATOR GROUND-FAULT RELAY,PROTECTION CONTROLS,PROTECTION RELAYS,GFA300,PGR-4300-12,PGR-4300-24,PGR-4300 SERIES,PGR-4300-120,发生器,GENERATOR

PGR-4300系列（GFA300）保护继电器&控制发电机和单功能保护-接地故障

该资料介绍了PGR-4300系列发电机接地故障继电器。它是一种无需电流互感器（CT）即可检测发电机组接地故障条件的简单设备，适用于空间有限无法安装CT的情况。该继电器与三相和四极转换开关兼容，并监控中性到地路径的连续性。

LITTELFUSE  -  PGR-4300,发电机接地故障继电器,GENERATOR GROUND-FAULT RELAY,PGR-4300-12,PGR-4300-24,PGR-4300 SERIES,PMA-55,PGA-0500,PMA-60,PGR-4300-120

PGR-4300系列（GFA300）保护继电器和控制器：发电机和单功能保护-接地故障

该资料介绍了PGR-4300系列发电机接地故障继电器。它是一种无需电流互感器（CT）即可检测发电机接地故障条件的简单设备，适用于空间有限无法安装CT的情况。该继电器与三相和四极转换开关兼容，并监控中性到地路径的连续性。

LITTELFUSE  -  PGR-4300,发电机接地故障继电器,GENERATOR GROUND-FAULT RELAY,GFA300,PGR-4300-12,PGR-4300-24,PGR-4300 SERIES,PMA-55,PGA-0500,PMA-60,PGR-4300-120

PGR-4300系列（GFA300）发电机接地故障继电器

该资料介绍了PGR-4300系列发电机接地故障继电器。它是一种无需电流互感器（CT）即可检测发电机接地故障条件的简单设备，适用于空间有限无法安装CT的情况。该继电器与三相和四极转换开关兼容，可监测中性到地路径的连续性。

LITTELFUSE  -  PGR-4300,发电机接地故障继电器,GENERATOR GROUND-FAULT RELAY,GFA300,PGR-4300-12,PGR-4300-24,PGR-4300 SERIES,PGR-4300-120

PGR-4300系列（GFA300）

该资料介绍了PGR-4300系列发电机接地故障继电器，这是一种无需电流互感器（CT）即可检测发电机接地故障条件的设备。它适用于空间有限无法安装CT的发电机或应用，具有可调拾取值和延时设置，提供报警或跳闸功能。

LITTELFUSE  -  PGR-4300,保护继电器和控制装置,发电机接地故障继电器,模拟%电流表,ANALOG % CURRENT METER,GENERATOR GROUND-FAULT RELAY,PROTECTION RELAYS &CONTROLS,PGR-4300-12,PGR-4300-24,(GFA300),PGA-0500,PGR-4300-120

PGR-4300系列（GFA300）保护继电器和控制：发电机和单功能保护-接地故障

该资料介绍了PGR-4300系列发电机接地故障继电器，这是一种无需电流互感器（CT）即可检测发电机组接地故障条件的简单方法。它适用于空间有限无法安装CT的情况，并支持三相和四极转换开关。此外，该继电器还监测中性到地路径的连续性。

LITTELFUSE  -  PGR-4300,保护继电器,发电机接地故障继电器,控制,CONTROLS,GENERATOR GROUND-FAULT RELAY,PROTECTION RELAYS,GFA300,PGR-4300-12,PGR-4300-24,PGR-4300 SERIES,PMA-55,PGA-0500,PMA-60,PGR-4300-120,发电机和单功能保护,发电机或没有足够空间安装CTS的应用,GENERATOR & SINGLE-FUNCTION PROTECTION,GENERATOR OR APPLICATION WHERE THERE IS NOT SUFFICIENT SPACE TO INSTALL CTS

NRNT.E183688开关，工业控制

LITTELFUSE  -  PGR-4300-24,工业控制开关,INDUSTRIAL CONTROL SWITCHES,GFR4000W,PGR-4700-120,RCD300-AMAT,ELM300-1,GFR4000,PGR-4700-24,RCD300W2,AMAT-FS120-GFI,PGR-4300-120,GFA300,GMC300,RCD300M2,ONAN307-2843,GF