{"product_id":"ge-multilin-489-p5-lo-a20-e-generator-management-relay","title":"GE Multilin 489-P5-LO-A20-E Generator Management Relay","description":"\u003ch2\u003eGE Multilin 489-P5-LO-A20-E Generator Management Relay\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGE Multilin 489-P5-LO-A20-E\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e489\u003c\/strong\u003e Generator Management Relay, operates as a dedicated hardware component for generator protection, control, metering, and event monitoring within generator electrical protection systems. It provides 5 A CT input processing, 4-20 mA analog outputs, relay control functions, and serial communication interfaces.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e489-P5-LO-A20-E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e10 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eMaximum 45 VA AC \/ 30 W DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGenerator Management Relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Power Supply\u003c\/td\u003e\n\u003ctd\u003e20-60 VDC or 20-48 VAC, 48-62 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhase Current Inputs\u003c\/td\u003e\n\u003ctd\u003e5 A CT secondary inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Outputs\u003c\/td\u003e\n\u003ctd\u003e4 assignable 4-20 mA outputs, maximum 600 ohm load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Contacts\u003c\/td\u003e\n\u003ctd\u003e6 relay contacts, 10 A continuous at 250 VAC \/ 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Sensing Range\u003c\/td\u003e\n\u003ctd\u003e20 to 70 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRTD Inputs\u003c\/td\u003e\n\u003ctd\u003e12 RTD inputs supporting platinum, nickel, and copper RTD types\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eRS232 front port and RS485\/RS422 rear port with Modbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003ePanel mount draw-out construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eEnhanced backlit LCD, 4 x 20 character format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Network and Firmware Compatibility Features\u003c\/h3\u003e\n\u003cp\u003eThe GE Multilin 489-P5-LO-A20-E integrates industrial control functions through programmable protection logic, serial communication channels, and configurable firmware parameters. The relay supports Modbus RTU communication through RS485\/RS422 interfaces for data exchange with supervisory control systems. Firmware configuration supports protection setting management, event recording, metering functions, and relay logic execution within generator control architectures.\u003c\/p\u003e\n\u003cp\u003eThe relay processes electrical measurement signals from CT and VT inputs for ANSI protection functions including overcurrent, voltage, frequency, reverse power, loss of excitation, thermal overload, unbalance protection, and generator differential protection. Configurable output assignments allow external control circuits to receive trip, alarm, and service status signals.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 489-P5-LO-A20-E support hot-swap replacement during operation?\u003cbr\u003eA: The unit uses a draw-out construction for panel installation. Hot-swap operation is not specified in the provided technical data and should be evaluated according to the installed switchgear design.\u003c\/p\u003e\n\u003cp\u003eQ: What communication protocol is available on the rear communication port?\u003cbr\u003eA: The rear RS485\/RS422 port supports Modbus RTU communication with selectable parity options including none, odd, and even.\u003c\/p\u003e\n\u003cp\u003eQ: What are the available analog output characteristics?\u003cbr\u003eA: The A20 option provides four assignable 4-20 mA analog outputs with a maximum load rating of 600 ohm.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the relay in a suitable panel or switchgear enclosure using the specified draw-out mounting arrangement. Verify CT secondary wiring polarity and terminal routing before energizing the unit.\u003c\/p\u003e\n\u003cp\u003eUse shielded wiring for analog signal circuits where required by the installation environment. Terminate cable shields according to the site grounding standard and avoid routing low-level measurement wiring together with high-current power conductors.\u003c\/p\u003e\n\u003cp\u003eConfirm control power voltage compatibility before connection. Check RS485\/RS422 communication wiring polarity, termination requirements, and isolation practices to maintain stable serial communication performance.\u003c\/p\u003e\n\u003cp\u003eVerify VT, CT, RTD, and relay output wiring against the application protection scheme before commissioning. Configure protection settings and communication parameters using compatible GE Multilin configuration software.\u003c\/p\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":44511584387160,"sku":"489-P5-LO-A20-E","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/489-P5-HI-A20-E-H2.jpg?v=1786007219","url":"https:\/\/www.industriaxplc.com\/id\/products\/ge-multilin-489-p5-lo-a20-e-generator-management-relay","provider":"IndustriaX Limited","version":"1.0","type":"link"}