{"product_id":"abb-1mrk001987-aa-compact-current-relay","title":"ABB 1MRK001987-AA Compact Current Relay","description":"\u003cp\u003eThe ABB 1MRK001987-AA is a compact current relay designed for precise monitoring and protection applications. This device features a 3-phase current transformer (CT) input, providing robust performance in industrial power management systems.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3-phase CT input configuration.\u003c\/li\u003e\n\u003cli\u003eWide measurement range from 0.05 to 40 times the nominal current (In).\u003c\/li\u003e\n\u003cli\u003eHigh measurement accuracy of ±1% of reading ±0.5% In.\u003c\/li\u003e\n\u003cli\u003eVersatile power supply compatibility supporting 24 to 240 V AC\/DC.\u003c\/li\u003e\n\u003cli\u003eHarmonic analysis capability up to the 15th harmonic.\u003c\/li\u003e\n\u003cli\u003eLow power burden for efficient operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1MRK001987-AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current (In)\u003c\/td\u003e\n\u003ctd\u003e1 A or 5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003e0.05 – 40 x In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±1% of reading ±0.5% In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e24 – 240 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Burden (Current)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.1 VA @ In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Burden (Voltage)\u003c\/td\u003e\n\u003ctd\u003e3 W (stand-by)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIn-rush Current\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 10 W for 100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the device is powered down before performing any wiring or installation tasks.\u003c\/li\u003e\n\u003cli\u003eVerify that the CT input wiring is securely terminated and matches the phase configuration of the monitored circuit.\u003c\/li\u003e\n\u003cli\u003eMaintain proper grounding practices to minimize electromagnetic interference (EMI) in high-voltage environments.\u003c\/li\u003e\n\u003cli\u003eEnsure adequate ventilation around the unit to prevent thermal buildup during operation.\u003c\/li\u003e\n\u003cli\u003eHandle with care to prevent electrostatic discharge (ESD) damage to internal components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the 1MRK001987-AA?\u003c\/strong\u003e\u003cbr\u003eThis module serves as a compact current relay designed to monitor 3-phase current inputs for protection and control purposes in electrical systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this relay support both 50 Hz and 60 Hz systems?\u003c\/strong\u003e\u003cbr\u003eYes, the unit is designed to operate within a frequency range of 50\/60 Hz ±5%.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the rated voltage range for the power supply?\u003c\/strong\u003e\u003cbr\u003eThe relay accepts a wide input voltage range of 24 to 240 V AC\/DC.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":51000460738812,"sku":"1MRK001987-AA","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_4ddba12d-7cdf-440c-93f7-0cc445d4bdcb.jpg?v=1787252264","url":"https:\/\/www.electronicplc.com\/ar\/products\/abb-1mrk001987-aa-compact-current-relay","provider":"Electronic PLC","version":"1.0","type":"link"}