{"product_id":"abb-rea101-arc-protection-relay-central-unit-mv-lv-switchgear","title":"ABB REA101 Arc Protection Relay Central Unit MV LV Switchgear","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB REA101\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-speed central unit for arc fault protection in medium-voltage (MV) and low-voltage (LV) air-insulated switchgear. Designed to operate independently or in conjunction with extension modules (\u003cstrong\u003eREA103\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREA105\u003c\/strong\u003e,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREA107\u003c\/strong\u003e), it provides scalable protection over extensive switchgear layouts. By rapidly detecting arcs and isolating the affected section, it reduces equipment damage and enhances personnel safety.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eUltra-fast arc detection using fiber-optic sensors and overcurrent monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSupports loop-type or radial fiber arrangements for flexible coverage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDual high-speed semiconductor trip outputs plus relay output for selective tripping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo extension ports, each supporting up to five expansion units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eContinuous self-supervision of fiber integrity, voltages, and inter-module communications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCircuit breaker failure protection with delayed output for upstream breakers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFault location indicated at the specific sensor or extension module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eFeature\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\u003e\u003cstrong\u003eRated Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC: 110\/120\/220\/240 V, DC: 110\/125\/220\/250 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 A or 5 A (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrip Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 High-speed semiconductor (HSO), 1 heavy-duty relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResponse Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 2.5 ms from detection to trip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-25°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIngress Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Interfaces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 RJ45 for extension units, 2 opto-connectors, RS-485 (Modbus RTU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEC 61508 (SIL 2), CE, UL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIN rail or flush mounting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eSystem Expansion\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eREA103:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAdds additional fiber loops for wide-area coverage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eREA105:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes extra high-speed trip outputs for complex selective tripping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eREA107:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports point sensors for monitoring individual compartments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIdeal for medium and low-voltage switchgear in industrial plants, utilities, and commercial installations requiring high-speed arc fault detection and selective tripping across multiple switchboard sections.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the REA101 operate standalone?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it can function independently for smaller switchgear setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many extension units can be linked?\u003c\/strong\u003e\u003cbr\u003eA: Each REA101 port supports up to five expansion units, allowing up to ten per central unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it support integration with SCADA systems?\u003c\/strong\u003e\u003cbr\u003eA: Yes, RS-485 Modbus RTU enables monitoring and control through SCADA or power management systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between REA103 and REA105?\u003c\/strong\u003e\u003cbr\u003eA: REA103 extends sensor coverage, while REA105 adds high-speed trip outputs for selective tripping.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44121899696227,"sku":"REA101","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/REA1011.jpg?v=1756716469","url":"https:\/\/precisemodule.com\/products\/abb-rea101-arc-protection-relay-central-unit-mv-lv-switchgear","provider":"Precise Module Ltd.","version":"1.0","type":"link"}