{"product_id":"ref541km115aaaa-abb-multifunctional-feeder-protection","title":"REF541KM115AAAA | ABB | Multifunctional Feeder Protection","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREF541 (REF541KM115AAAA)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance, multifunctional feeder protection and control terminal designed for advanced medium-voltage distribution systems. As a key Intelligent Electronic Device (IED) in the ABB power protection portfolio, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREF541 (REF541KM115AAAA)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eintegrates comprehensive protection, measurement, monitoring, and control capabilities within a single numerical unit. This revision A module is engineered to provide deterministic fault detection for feeders, transformers, and industrial motors, facilitating seamless integration into automated substation environments. Its robust hardware design ensures reliable operation in demanding electrical infrastructures, providing the precision required for grid stability and asset protection.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e: ABB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Designation\u003c\/strong\u003e: REF541\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering Code\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eREF541KM115AAAA\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHardware Revision\u003c\/strong\u003e: Rev. A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDevice Type\u003c\/strong\u003e: Feeder Protection and Control Terminal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Protection\u003c\/strong\u003e: Three-phase overcurrent, directional\/non-directional earth-fault, thermal overload, and voltage protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSecondary Protection\u003c\/strong\u003e: Phase imbalance, underfrequency\/overfrequency, and broken conductor detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMeasurement Precision\u003c\/strong\u003e: High-accuracy monitoring of phase current, voltage, frequency, power factor, and energy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRated Current Input\u003c\/strong\u003e: 1 A or 5 A (Software\/Hardware selectable)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRated Voltage Input\u003c\/strong\u003e: Up to 110 V AC (Standard VT secondary circuit)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNominal Frequency\u003c\/strong\u003e: 50 \/ 60 Hz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAuxiliary Power Supply\u003c\/strong\u003e: Wide-range universal 24–250 V DC or 48–240 V AC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBinary I\/O Configuration\u003c\/strong\u003e: Multiple programmable digital inputs and outputs for local status feedback and trip logic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Protocols\u003c\/strong\u003e: SPA bus, Modbus RTU, and IEC 60870-5-103\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e: Integrated HMI with a multi-line LCD display and navigational keypad\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFault Diagnostics\u003c\/strong\u003e: Disturbance recorder (COMTRADE format) and extensive sequence-of-events log\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: -25°C to +70°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e: -40°C to +85°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (WxHxD)\u003c\/strong\u003e: 160 mm x 180 mm x 200 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.5 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompliance Standards\u003c\/strong\u003e: IEC 60255 series for power system protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43027054952538,"sku":"REF541","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/39._123fbf48-ea06-4b44-84e3-bbdb375d57b5.jpg?v=1773201410","url":"https:\/\/www.spareoil.com\/products\/ref541km115aaaa-abb-multifunctional-feeder-protection","provider":"SpareOil Automation","version":"1.0","type":"link"}