{"product_id":"ref-54-series-feeder-protection-terminal-abb-ref543","title":"REF 54 Series Feeder Protection Terminal | ABB REF543","description":"\u003ch2\u003eABB REF543 Feeder Protection Terminal\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB REF543\u003c\/strong\u003e (REF 54 series) is a multifunctional feeder protection and control terminal engineered for medium-voltage power distribution systems. As an Intelligent Electronic Device (IED), it integrates protection, measurement, control, supervision, and programmable logic automation into a single compact chassis for switchgear and substation panel installation.\u003c\/p\u003e\n\u003ch3\u003eProtection Capabilities and Signal Interface\u003c\/h3\u003e\n\u003cp\u003eThe terminal accommodates up to 9 or 10 analog measurement channels depending on hardware configuration, supporting continuous monitoring of current, voltage, system frequency (50\/60 Hz), active\/reactive power, and power factor. Hardware interfaces include 25 digital inputs and 18 output relays for breaker operation, interlocking schemes, and system protection functions including overcurrent, earth-fault, directional voltage, thermal overload, and automatic reclosing.\u003c\/p\u003e\n\u003ch3\u003eControl, Logic, and Lifecycle Status\u003c\/h3\u003e\n\u003cp\u003eLocal operation is supported via a front-panel graphical LCD and keypad HMI. Internal Programmable Logic Controller (PLC) capabilities allow custom automation sequences and disturbance recording across analog and digital channels. Native SPA and LON protocols are supported directly, while IEC 60870-5-103, DNP 3.0, Modbus, and IEC 61850 protocol integration are achieved via dedicated communication adapters. Note that the REF543 product line has been officially discontinued by ABB since 2022.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003eREF543\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eREF 54 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFeeder Protection and Control Terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Frequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Measurement Channels\u003c\/td\u003e\n\u003ctd\u003e9 or 10 (configuration dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Inputs\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Relays\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman Machine Interface\u003c\/td\u003e\n\u003ctd\u003eGraphical LCD and keypad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNative Protocols\u003c\/td\u003e\n\u003ctd\u003eSPA, LON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdapter Protocols\u003c\/td\u003e\n\u003ctd\u003eIEC 60870-5-103, DNP 3.0, Modbus, IEC 61850\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e7.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer (2022)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: Is the ABB REF543 still in active production? A: No, the REF543 series was officially discontinued by ABB in 2022.\u003c\/p\u003e\n\u003cp\u003eQ: What communication protocols does the REF543 support for SCADA integration? A: The device natively supports SPA and LON bus protocols, while IEC 61850, Modbus, DNP 3.0, and IEC 60870-5-103 can be integrated using optional communication adapters.\u003c\/p\u003e\n\u003cp\u003eQ: How many I\/O channels are available on the REF543 terminal? A: The unit provides 25 digital inputs, 18 output relays, and 9 or 10 analog measurement channels depending on the specific model configuration.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":51330801533240,"sku":"REF543","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/972.jpg?v=1794282271","url":"https:\/\/www.automodulexpert.com\/products\/ref-54-series-feeder-protection-terminal-abb-ref543","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}