{"product_id":"abb-rej603bb401nn3xe-relion-feeder-protection-relay","title":"ABB REJ603BB401NN3XE Relion Feeder Protection Relay","description":"\u003cp\u003eConfigured for self-powered feeder protection execution in secondary distribution networks, the \u003cstrong\u003eABB REJ603BB401NN3XE\u003c\/strong\u003e (\u003cstrong\u003eREJ603BB401NN3XE\u003c\/strong\u003e Feeder Protection Relay) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eCode Segment\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\u003eREJ603\u003c\/td\u003e\n\u003ctd\u003eRelion 605 series feeder protection relay platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBB401\u003c\/td\u003e\n\u003ctd\u003eStandard hardware configuration variant for current-based protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNN3XE\u003c\/td\u003e\n\u003ctd\u003eConfiguration designator without HMI and specific auxiliary interface options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003eREJ603BB401NN3XE\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\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard Relion 605 form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard compact switchgear enclosure profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial switchgear range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSelf-powered via current transformers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane and Network Communication Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane bus communication velocity Licences\u003c\/strong\u003e: Internal bus topologies optimize data transfer rates across internal processing modules to ensure rapid fault logging and overcurrent trip coordination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfinet \/ EtherNet\/IP deterministic networks\u003c\/strong\u003e: Hardware interface configurations maintain compatibility with secure substation management frameworks and local service tools when connected via applicable communication add-ons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O density scaling\u003c\/strong\u003e: Compact terminal allocations accommodate high-voltage current transformer inputs and binary trip\/alarm outputs tailored for secondary switchgear and ring main units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware flash compatibility\u003c\/strong\u003e: Integrated memory architecture permits secure firmware updates and profile configurations without altering core relay hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the relay require an external auxiliary power supply for normal operation?\u003c\/p\u003e\n\u003cp\u003eA: No. The unit utilizes a self-powered design that draws all necessary operating energy directly from connected current transformers during fault conditions or load flow.\u003c\/p\u003e\n\u003cp\u003eQ: How is local user interaction handled given that this specific variant lacks an integrated HMI?\u003c\/p\u003e\n\u003cp\u003eA: This model is supplied without a built-in HMI panel, though operational data and configuration can be managed using an optional add-on HMI kit or external service tools.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the relay housing securely into the designated cutout on the secondary distribution switchgear or ring main unit, ensuring proper mechanical clearance and alignment.\u003c\/li\u003e\n\u003cli\u003eConnect current transformer secondary leads to the designated rear terminals, verifying correct polarity and secure torque specifications prior to system energization.\u003c\/li\u003e\n\u003cli\u003eRoute low-level control and binary I\/O wiring separately from high-voltage primary conductors and switching power lines to mitigate electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eEnsure that the relay functional earth terminal is securely bonded to the switchgear copper ground bus using a low-impedance conductor to maintain electrical safety and surge suppression.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45275435139187,"sku":"REJ603BB401NN3XE","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-05-08_11-17-47_8f258ca1-b281-453c-ba31-ef7459f8968d.png?v=1784776654","url":"https:\/\/www.dcssupplier.com\/products\/abb-rej603bb401nn3xe-relion-feeder-protection-relay","provider":"DcsSupplier Limited","version":"1.0","type":"link"}