{"product_id":"abb-rea101-arc-fault-protection-main-module","title":"ABB REA101 Arc Fault Protection Main Module","description":"\u003cp\u003eThe \u003cstrong\u003eABB REA101\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eREA101\u003c\/strong\u003e Arc Fault Protection Main Module, operates as a dedicated hardware component for high-speed optical light detection and overcurrent fault discrimination within industrial and utility switchgear platforms. This central processing unit evaluates simultaneous inputs from fiber-optic light sensors and internal overcurrent monitoring blocks to identify arc flash events. \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\u003eREA101\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.1 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e148 mm x 160 mm x 115 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\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\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLess than 15 W nominal auxiliary load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh-Speed Outputs\u003c\/td\u003e\n\u003ctd\u003e2 isolated insulated gate bipolar transistor (IGBT) devices (HSO1, HSO2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Outputs\u003c\/td\u003e\n\u003ctd\u003e1 heavy-load relay output (TRIP3) for CBFP or alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Interfaces\u003c\/td\u003e\n\u003ctd\u003e2 RJ45 ports (supports up to 5 expansion modules per port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterconnect Ports\u003c\/td\u003e\n\u003ctd\u003e2 optoelectronic connectors for long-distance inter-module links\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor Inputs\u003c\/td\u003e\n\u003ctd\u003eSupports ring fiber, radial fiber, or localized lens sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Monitoring\u003c\/td\u003e\n\u003ctd\u003eThree-phase overcurrent or two-phase plus neutral overcurrent thresholds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity and Network Integration\u003c\/h3\u003e\n\u003cp\u003eThe REA101 coordinates high-speed local data transmission through dual RJ45 expansion ports, sustaining a stable backplane bus communication velocity across up to ten connected expansion modules. Inter-module data routing over long physical distances utilizes the twin optoelectronic connectors to link multiple REA101 hubs via REA105 intermediate nodes without propagation delay. This optical interface allows time-critical current status and trip commands to traverse the local network, satisfying strict deterministic networks constraints while maintaining firmware flash compatibility for adaptive phase and zero-sequence overcurrent logic scaling.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the specific mechanical advantage of utilizing IGBT high-speed outputs (HSO1 and HSO2) over traditional mechanical relays?\u003c\/p\u003e\n\u003cp\u003eA: The solid-state IGBT outputs eliminate the physical moving mass and contact bounce delays inherent in mechanical relays. This layout allows the REA101 to release a trip signal to the circuit breaker trip coil within less than 2.5 milliseconds from initial arc light detection.\u003c\/p\u003e\n\u003cp\u003eQ: How does the built-in self-checking system respond if a fiber-optic sensor loop breaks connection?\u003c\/p\u003e\n\u003cp\u003eA: The continuous self-checking hardware transmits structural light pulses through the fiber loop to test channel integrity. If a fiber breaks or degrades below the minimum optical threshold, the system triggers the internal diagnostic alarm and locks the affected module slot to suppress false trip execution.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":47583158862014,"sku":"REA101","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-05-27_11-43-28.png?v=1779853542","url":"https:\/\/www.autooiltech.com\/products\/abb-rea101-arc-fault-protection-main-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}