{"product_id":"abb-rex521-feeder-protection-relay-rex-521-in-stock","title":"ABB REX521 Feeder Protection Relay REX 521 in Stock","description":"\u003cdiv class=\"textContainer headline headline-cursor\"\u003e\n\u003ch1 class=\"tile-headline\"\u003e\nFeeder protection relay REX 521\n\u003c\/h1\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"textContainer headline headline-cursor\"\u003e\n\u003ch3 class=\"tile-headline\"\u003e\nBasic protection of busbars and feeders in utility substations and industrial power distribution systems\n\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sfContentBlock\"\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eNot active product since 2012\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp dir=\"LTR\"\u003e\nThe feeder protection relay REX 521 is designed for protection, control, measuring and supervision in medium voltage networks and for protection of large or medium-size three-phase a.c. motors in circuit breaker controlled motor drives. Typical applications include incoming, outgoing feeders and motor feeders as well as substation protection. Further, the relay can, e.g., be applied as back-up protection of power transformers and back up for high-voltage line-protection relays.\n\u003c\/p\u003e\n\u003cp\u003eThe protection relay is provided with energizing inputs for conventional current and voltage transformers. Also a hardware version with inputs for current and voltage sensors is available.\u003c\/p\u003e\n\u003cp\u003eThe REX 521 Feeder Protection Relay has been further enriched with additional features to provide your electrical network with even more efficient protection, extended measuring functions, supervision, control functions and connectivity. The REX 521 is mainly used in single busbar solutions, using one circuit breaker for various protections.\u003c\/p\u003e\n\u003cp\u003eWith pre-made, standard configurations the unit can be used in different types of networks and the typical applications include incoming and outgoing feeders in radial isolated neutral, resonant earthed, solidly earthed and resistively earthed systems.\u003c\/p\u003e\n\u003cp dir=\"LTR\"\u003e\n\u003cstrong\u003eScope\u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"LTR\"\u003e\nProtection, control, measuring and supervision in medium voltage networks and for protection of large or medium-size three-phase a.c. motors\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"LTR\"\u003e\n\u003cstrong\u003eProduct benefits\u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"LTR\"\u003e\nMulti-functional protection\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"LTR\"\u003e\n\u003cstrong\u003eProduct features\u003c\/strong\u003e\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli dir=\"LTR\"\u003e\nEnergizing inputs for conventional current and voltage transformers\n\u003c\/li\u003e\n\u003cli dir=\"LTR\"\u003e\nVersion with inputs for current and voltage sensors is also available\n\u003c\/li\u003e\n\u003cli dir=\"LTR\"\u003e\nPre-made, standard configurations\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\nAbout Us\n\u003c\/h3\u003e\n\u003cp\u003e✨ With 13 years of global supply experience, we bring you exceptional service.\u003c\/p\u003e\n\u003cp\u003e🌍 We directly source authentic licensed products from abroad, ensuring competitive prices, reliable after-sale warranties, and an extensive selection of models backed by ample inventory.\u003c\/p\u003e\n\u003cp\u003e💥 Contact us for orders of more than 1 product, and we’ll be delighted to offer you a discount.\u003c\/p\u003e\n\u003cp\u003e🤔 Have questions or special requests? Feel free to get in touch with us.\u003c\/p\u003e\n\u003cp\u003e💰 If you find the same parts at a lower price from other suppliers, we’ll match or beat that price.\u003c\/p\u003e\n\u003cp\u003e🛠️ Need spare parts? Let us know, and we’ll gladly assist you further. Your inquiry is eagerly awaited.\u003c\/p\u003e\n\u003cp\u003e📧 Contact Us\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\nE-mail: \u003ca href=\"mailto:sales6@5gplc.com\" target=\"_new\" rel=\"noopener\"\u003esales6@5gplc.com\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e🕒 Business Hours: 24\/7\u003c\/p\u003e\n\u003cp\u003e🏢 Address: No.601, Hongwen Liuli, Siming District, Xiamen, China\u003c\/p\u003e\n\u003ch3\u003e\nRecommended Products\n\u003c\/h3\u003e\n\u003ctable class=\"product-specs\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\nManufacturer\n\u003c\/th\u003e\n\u003cth\u003e\nModel\n\u003c\/th\u003e\n\u003cth\u003e\nLink\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nPM851\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-pm851-plc-module-brand-new-in-stock\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nTP830\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-tp830-baseplate-for-processor-module\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nCMA 132 3DDE300412\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-cma-132-3dde300412-generator-relay-terminal-board\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nDO880\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-3bse028602r1-do880-digital-output-hi-s-r-16-ch\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07AC91\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-07ac91-gjr5252300r0101-analog-i-o-module-in-stock\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07KT97\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-07kt97-gjr5253000r0200-plc-central-unit-24v-dc\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nPM861AK01\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-pm861ak01-3bse018157r1-processor-unit-ac-800m-in-stock\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nPM864AK01\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-pm864ak01-3bse018161r1-processor-unit-brand-new-in-stock\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07KT94\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-07kt94-gjr5252100r3261-3-phase-ac-contactor\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07KT95\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-gjr5252800r0100-07kt95-07-kt-95-control-unit\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07CR41\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-07cr41-advant-controller-basic-unit-in-stock\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07DI92\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-07di92-digital-i-o-module-100-original-packaging-in-stock\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\n07KP90\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-07kp90-gjr5251000r0303-07-kp-90-rcom-communications-module\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nCI854AK01\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-ci854ak01-3bse030220r1-profibus-dp-v1-interface-module\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\nABB\n\u003c\/td\u003e\n\u003ctd\u003e\nCI858AK01\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003ca href=\"https:\/\/www.6gcontrols.com\/products\/abb-3bse018135r1-ci858k01-drivebus-interface-module\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003elink\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52752523952413,"sku":"REX521","price":9.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/5387\/3181\/files\/REX521_1000.jpg?v=1787126621","url":"https:\/\/www.6gcontrols.com\/products\/abb-rex521-feeder-protection-relay-rex-521-in-stock","provider":"6G Controls","version":"1.0","type":"link"}