{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REL21701","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"REL21701","canonicalUrl":"https://aoctrl.com/schneider/REL21701","factsUrl":"https://aoctrl.com/api/mcp/products/REL21701","rawCanonicalId":null},"summary":{"shortDescription":"Schneider REL21701 Micom And — now discontinued, supplied from remaining surplus and broker stock.","salesMarkdown":"## Overview The REL21701 is a Schneider MiCOM P127 voltage/current protection relay rated for 1 A nominal current on a 250 V DC supply, with 4 current transformer inputs (X/5 A and X/1 A), 3 voltage transformer inputs, and 12 discrete inputs plus 9 discrete outputs. It supports DNP3, IEC 60870-5-103, and Modbus RTU protocols, and is flush-mounted in a 103.0 mm wide case with a total depth of 270 mm (embedded depth 240 mm). Schneider discontinued the REL21701 on 2020-08-27; it is no longer in active production and must be sourced through surplus or broker channels.","metaTitle":"Schneider REL21701 MiCOM P127 protection relay, 1 A, discontinued","metaDescription":"Schneider REL21701 MiCOM P127 voltage/current protection relay: 1 A rated current, 250 V DC supply, 4 CT + 3 VT + 12 discrete inputs, 9 discrete outputs, DNP3/Modbus/IEC 60870-5-10","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["General Purpose Relays"],"specifications":{"Depth":"Total : 270 mm Embedded : 240 mm","Width":"103 mm","Height":"Total: 177 mm Embedded: 157.5 mm","Device mounting":"Flush","Protection type":"ANSI 50/51 : overcurrent ANSI 79 : recloser Cold load pick-up ANSI 50G/51G : earth fault ANSI 86 : lockout ANSI 47 : negative sequence overvoltage ANSI 27 : undervoltage ANSI 59 : overvoltage ANSI 81R : rate of change of frequency ANSI 59N : neutral voltage displacement ANSI 49RMS : thermal overload protection ANSI 81L : underfrequency ANSI 37 : phase undercurrent ANSI 46 : negative sequence overcurrent ANSI 67N : directional earth fault ANSI 67W : earth fault wattmetric ANSI 81O : overfrequency ANSI 62/50BF : breaker failure ANSI 64 : restricted earth fault ANSI 67P : directional phase overcurrent ANSI 51V : voltage-restrained overcurrent","lifecycle_stage":"current","Number of inputs":"4 current input CT...X/5 A and X/1 A 3 voltage 12 discrete","Number of outputs":"9 discrete","Discrete input voltage":"24...250 V DC 19.2 V standard variant 48...250 V AC 19.2 V standard variant 48...250 V DC 105 V further option 48...250 V DC 77 V further option 48...250 V DC 154 V further option 48...240 V AC 105 V further option 48...240 V AC 77 V further option 48...240 V AC 154 V further option","Switchgear diagnosis type":"Trip circuit supervision ANSI code: TCS CT supervision ANSI code: CTS VT supervision ANSI code: VTS","[Us] rated supply voltage":"24...250 V DC 19.2...300 V 48...250 V DC 38.4...300 V 48...240 V AC 38.4...264 V","Communication port support":"RS232 RS485","Communication port protocol":"DNP3 IEC 60870-5-103 Modbus RTU","Control and monitoring type":"Circuit breaker/contactor control","Network and machine diagnosis type":"Fault recording Event recording Disturbance recording15 s"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3,749.61","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f6549baaaa63900a76790a20d2c596cf.pdf","sourceUrl":"https://www.se.com/id/en/product/REL21701/p127-voltage-current-ion-1a-0-140ion-modbus/","alternativesUrl":"https://aoctrl.com/api/mcp/products/REL21701/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/REL21701","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/REL21701 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}