{"product_id":"abb-reb-103-bus-connection-module","title":"ABB REB 103 Bus Connection Module","description":"\u003cp\u003eThe \u003cstrong\u003eABB RER 103\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRER 103\u003c\/strong\u003e Bus Connection Module, serves as the primary \u003cstrong\u003eRER 103\u003c\/strong\u003e interfacing unit utilized to execute physical signal conversion between fiber-optic network buses and electrical RS-485 serial ports across RE500 device platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\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\u003eRER 103\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eFinland \/ Sweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard compact interface accessory weight profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003ePocket-sized module matching a standard subminiature footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard substation control panel environmental baseline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eDerived directly via the host 9-pin D-type serial connector rails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Life Status\u003c\/td\u003e\n\u003ctd\u003eLegacy (Not an active product since 2011)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHost Interface\u003c\/td\u003e\n\u003ctd\u003e9-pin D-type subminiature male\/female connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Network Protocols\u003c\/td\u003e\n\u003ctd\u003eSPA, LON, and IEC 60870-5-103\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Interface\u003c\/td\u003e\n\u003ctd\u003eRS-485 serial signaling levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia Matrix\u003c\/td\u003e\n\u003ctd\u003eFiber-optic transfer media to copper twisted-pair matching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control and Drive Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity\u003c\/strong\u003e The interface module links directly to the rear serial port of an RE500 terminal, matching transmission velocity across the local processing loop. It converts incoming light pulses to electrical square-wave lines with zero transit buffering, preserving real-time data rates for protection signaling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfinet \/ EtherNet\/IP Deterministic Networks\u003c\/strong\u003e By using fiber-optic lines to run legacy SPA, LON, or IEC_103 protocols, the unit isolates sub-station logic channels. This glass-media boundary blocks high-frequency electromagnetic fields, keeping deterministic communication links steady during heavy switchyard faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling and Physical Mounting\u003c\/strong\u003e The hardware uses an integrated design that plugs straight onto the existing 9-pin D-type rear plate connector, eliminating the need for extra rack slots or rail allocations inside packed protection cubicles. This allows for simple channel scaling without changing the core panel layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the RER 103 connection module require an external 24 VDC power supply connection?\u003c\/p\u003e\n\u003cp\u003eA: No. The RER 103 derives its internal logic and optical transceiver operating voltage directly from the pin assignments of the host RE500 device's 9-pin D-type connector, eliminating the need for separate external power wiring.\u003c\/p\u003e\n\u003cp\u003eQ: Can this module be utilized on legacy third-party protection relays equipped with an RS-485 serial port?\u003c\/p\u003e\n\u003cp\u003eA: No. The physical housing form factor and electrical pin configurations are engineered strictly to mate with the specific rear plate layout and communication firmware of ABB RE500 series terminal devices.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45090719793267,"sku":"REB 103","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-05-22_11-20-30_65bd170c-6543-4549-bd67-a588587f77cc.png?v=1781143428","url":"https:\/\/www.dcssupplier.com\/products\/abb-reb-103-bus-connection-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}