{"product_id":"medium-voltage-feeder-protection-abb-ref542plus-cl044123236","title":"Medium-Voltage Feeder Protection | ABB REF542PLUS CL044123236","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe ABB REF542PLUS (CL044123236) serves as a multi-functional digital feeder terminal and bay control unit for medium-voltage power distribution systems. This 100% brand new, original unit consolidates measurement, monitoring, protection, and control logic into a single hardware platform. By managing overcurrent, earth-fault, and frequency parameters, the REF542PLUS eliminates the need for separate discrete relays. It functions as the primary intelligence for feeder, transformer, and motor bays, ensuring rapid fault isolation and stable power delivery in utility and industrial substations.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe REF542PLUS integrates high-precision sampling hardware with a flexible auxiliary power supply to accommodate diverse global grid standards.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Detail\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eREF542PLUS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCL044123236\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePrimary Functions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOvercurrent, Earth-fault, Voltage, and Frequency Protection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eControl Capabilities\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIntegrated Breaker and Switchgear Control\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMeasurement Accuracy\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e±0.5% for Current and Voltage parameters\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommunication Protocols\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIEC 60870-5-103, Modbus, optional IEC 61850\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAuxiliary Supply\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24–250 V DC \/ 100–240 V AC (Wide Range)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eI\/O Configuration\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMultiple Configurable Binary Inputs and Outputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProtection Class\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eIP54 Rated (Front Panel)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e–10 °C to +55 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSwitzerland \/ Italy\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe ABB REF542PLUS CL044123236 optimizes substation efficiency and hardware longevity through integrated design:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConsolidated Bay Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis unit manages protection and control simultaneously. By integrating breaker control logic directly into the protection relay, the REF542PLUS reduces inter-module wiring and minimizes the points of failure within the switchgear cabinet.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Precision Fault Detection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe internal processing engine delivers ±0.5% measurement accuracy. This precision ensures that the unit distinguishes between transient inrush currents and genuine fault conditions, preventing unnecessary power outages while maintaining strict equipment safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Communication Architecture:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe terminal supports standard protocols like Modbus and IEC 60870-5-103, with hardware options for IEC 61850. This flexibility enables the REF542PLUS to integrate into both legacy SCADA systems and modern, Ethernet-based digital substations without requiring external protocol converters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRuggedized Environmental Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned for harsh industrial zones, the unit features an IP54 protection rating and high EMC resistance. It maintains deterministic performance in environments characterized by high vibration and significant temperature swings (–10 °C to +55 °C).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the REF542PLUS support both AC and DC auxiliary power?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes. The CL044123236 features a universal power supply that accepts 24–250 V DC or 100–240 V AC. This allows the unit to run off substation battery banks or standard mains power without modification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I configure the protection settings and logic?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must use ABB's dedicated configuration software to set protection curves and map binary I\/O. The software allows you to program specific interlocking logic for breakers and switches directly into the unit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this unit compatible with IEC 61850 for digital substations?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe REF542PLUS platform supports IEC 61850 via an optional communication module. This specific CL044123236 version facilitates seamless data exchange for GOOSE messaging and station-bus communication when correctly equipped.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the benefit of the IP54 protection class?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe IP54 rating ensures the front interface resists dust ingress and splashing water. This is critical for units mounted on the door of medium-voltage switchgear panels in industrial plants or outdoor kiosks where environmental contaminants are present.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43835422048355,"sku":"REF542PLUS CL044123236","price":676.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/190_ad244e28-b396-43ca-b5e4-91bcf6482585.jpg?v=1776648433","url":"https:\/\/www.autocontrolglobal.com\/ar\/products\/medium-voltage-feeder-protection-abb-ref542plus-cl044123236","provider":"AutoControl Global","version":"1.0","type":"link"}