{"product_id":"abb-rer-103-reliable-mm-bus-connection-module-for-ref-series","title":"ABB RER 103 Reliable MM Bus Connection Module for REF Series","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eABB RER 103\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a robust bus communication module designed for medium-voltage protection and control systems. It enables data exchange between Intelligent Electronic Devices (IEDs) and higher-level automation systems through\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efiber-optic communication\u003c\/strong\u003e, ensuring high immunity to electromagnetic interference and excellent electrical isolation.\u003c\/p\u003e\n\u003cp\u003eDesigned for seamless integration with ABB’s\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREF, REM, and RET\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprotection relay families, the RER 103 supports both\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003estar and ring topologies\u003c\/strong\u003e, providing flexibility for various substation network architectures. Its compact footprint and convenient\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDIN-rail mounting\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esimplify installation within switchgear panels. In addition,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ehot-swapping\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eautomatic node addressing\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ereduce commissioning time and support easy maintenance.\u003c\/p\u003e\n\u003cp\u003eFor instance, in a substation equipped with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREF 543 feeder terminals\u003c\/strong\u003e, the RER 103 ensures fast and secure communication between relays and the station automation system for real-time fault coordination.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Data\u003c\/h2\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\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\u003ctd\u003eProduct Model\u003c\/td\u003e\n\u003ctd\u003eRER 103\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-10°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e35 mm × 100 mm × 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSubstation Automation\u003c\/strong\u003e: Enables fiber-optic communication between protection relays and control systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFeeder Protection Systems\u003c\/strong\u003e: Used with REF 543 and similar terminals for fast, reliable signal exchange.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTransformer Protection\u003c\/strong\u003e: Provides interface between RET relays and SCADA\/RTU systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Power Distribution\u003c\/strong\u003e: Maintains communication integrity in high-EMI environments (refineries, steel plants).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRing Bus Architectures\u003c\/strong\u003e: Supports redundant communication paths for enhanced availability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTherefore, the RER 103 is ideal for critical infrastructure requiring\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esecure, high-speed, and interference-free\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edata communication. Its modularity and compatibility with ABB’s protection ecosystem ensure long-term scalability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What devices are compatible with the RER 103?\u003c\/strong\u003e\u003cbr\u003eA: ABB REF, REM, and RET series protection relays.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it be used in ring topology networks?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it supports both star and ring architectures for redundancy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What fiber types are supported?\u003c\/strong\u003e\u003cbr\u003eA: Both plastic and glass fiber using\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eST-type\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econnectors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the module hot-swappable?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it allows maintenance without communication downtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is it mounted?\u003c\/strong\u003e\u003cbr\u003eA: It is designed for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDIN rail\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einstallation in control panels.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":51330808545592,"sku":"RER 103","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/RER1032.jpg?v=1762762322","url":"https:\/\/www.automodulexpert.com\/bg\/products\/abb-rer-103-reliable-mm-bus-connection-module-for-ref-series","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}