{"product_id":"sr489-p5-hi-a20-ge-multilin-generator-management-relay","title":"SR489-P5-HI-A20 | GE Multilin | Generator Management Relay","description":"\u003ch2\u003eGE SR489-P5-HI-A20 Generator Management Relay\u003c\/h2\u003e\n\u003cp\u003eConfigured for generator protection in Multilin 489 series systems, the \u003cstrong\u003eGE SR489-P5-HI-A20\u003c\/strong\u003e (\u003cstrong\u003eSR489\u003c\/strong\u003e generator management relay) provides direct electrical execution of phase, ground, and excitation monitoring functions.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e489\u003c\/strong\u003e: Multilin 489 series generator management relay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP5\u003c\/strong\u003e: 5 A phase CT secondaries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHI\u003c\/strong\u003e: High control power (90–300 VDC, 70–265 VAC at 48–62 Hz)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA20\u003c\/strong\u003e: 4–20 mA analog outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e: Basic LCD (blank suffix)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eH\u003c\/strong\u003e: Harsh environment conformal coating\u003c\/li\u003e\n\u003c\/ul\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\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003eSR489-P5-HI-A20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e\u003cspan class=\"rQesXe MPyX\"\u003e7.7 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eStandard 489 series enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temp\u003c\/th\u003e\n\u003ctd\u003eControl-room range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Consumption\u003c\/th\u003e\n\u003ctd\u003eFuse rated 2.5 A, Littelfuse 215-02.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Voltage\u003c\/th\u003e\n\u003ctd\u003e90–300 VDC, 70–265 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003ctd\u003e48–62 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePhase Inputs\u003c\/th\u003e\n\u003ctd\u003e5 A CT secondaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnalog Outputs\u003c\/th\u003e\n\u003ctd\u003e4–20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eBasic LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eIEEE\/ANSI C37.90.1, Class A emissions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHumidity\u003c\/th\u003e\n\u003ctd\u003eUp to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProtection Functions\u003c\/th\u003e\n\u003ctd\u003eGround overcurrent curves (ANSI, IEC, IAC, Flexcurve, Definite Time), Loss of excitation trip (2 zones), Phase differential pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePulse Outputs\u003c\/th\u003e\n\u003ctd\u003e+kWh, +kvarh, –kvarh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks\u003c\/h3\u003e\n\u003cp\u003eThe SR489 integrates into deterministic communication networks via rear terminal interfaces. Firmware flash compatibility ensures synchronization with supervisory systems. I\/O density scaling supports multiple assignable digital inputs (1–7), while deterministic scan cycles maintain predictable timing for generator protection. Breaker and trip functions are executed with minimal latency, preserving deterministic operation across distributed automation networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the SR489 relay be hot-swapped during operation? A: No, the relay requires full de-energization before removal or insertion to prevent unsafe contact exposure.\u003c\/p\u003e\n\u003cp\u003eQ: What is the switching delay in redundant configurations? A: Relay contact switching is designed within ±50 ms accuracy at 50\/60 Hz, ensuring minimal delay in redundant setups.\u003c\/p\u003e\n\u003cp\u003eQ: Is the fuse user-replaceable? A: Yes, the relay uses a 5x20 mm HRC SLO-BLO Littelfuse (model 215-02.5) rated at 2.5 A, accessible for replacement.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount relay securely in control panels with clearance for airflow.\u003c\/li\u003e\n\u003cli\u003eRoute CT and VT wiring separately from communication cabling to minimize interference.\u003c\/li\u003e\n\u003cli\u003eEnsure grounding and shielding practices are applied to digital inputs and analog outputs.\u003c\/li\u003e\n\u003cli\u003eConfirm fuse installation and insulation levels before energizing.\u003c\/li\u003e\n\u003cli\u003eDe-energize control power before insertion or removal to prevent undefined states.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":44088073519178,"sku":"SR489-P5-HI-A20","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/8569\/3770\/files\/489-P5-HI-A20-E-H_3.png?v=1763542351","url":"https:\/\/www.topbrandsplc.com\/products\/sr489-p5-hi-a20-ge-multilin-generator-management-relay","provider":"Topbrands PLC Limited","version":"1.0","type":"link"}