{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"REL52437","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"REL52437","canonicalUrl":"https://aoctrl.com/schneider/REL52437","factsUrl":"https://aoctrl.com/api/mcp/products/REL52437","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Sepam series 20 REL52437 protection relay, 3 CT + I0 input, PCE package, Russian language, 2 RJ45 interface, 155 V DC supply, active.","salesMarkdown":"## Overview The REL52437 is an active Sepam series 20 protection relay from Schneider, wired for 3 CT + I0 input and powered at 155 V DC. It ships in a PCE package with Russian-language firmware and dual RJ45 ports for Ethernet-based communication. ## Selection vs siblings The 155 V supply rail sets it apart from the REL52439, which runs on 12 V — pick the REL52439 for low-voltage DC panels. If your network uses RS485 rather than Ethernet, the REL52436 swaps the 2 RJ45 ports for a single RS485 interface.","metaTitle":"Schneider REL52437 Sepam series 20 protection relay, 155 V DC, 3 CT + I0","metaDescription":"Schneider REL52437 Sepam series 20 protection relay: 3 CT + I0 input, 155 V DC supply, Russian language, 2 RJ45, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["General Purpose Relays"],"specifications":{"Input type":"3 CT + I0","User language":"Russian","lifecycle_stage":"current","Range of product":"Easergy P3","Switching voltage":"155 V DC","Physical interface":"2 RJ45","[Us] rated supply voltage":"48...230 V","[Ue] rated operational voltage":"220...230 V AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,908.43","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6858dfc0b104348e280c5740873ff562.pdf","sourceUrl":"https://www.se.com/th/en/product/REL52437/ecofit-sepam-s20-s40-with-easergy-p3u30-russian-2-rj45-155-v-dc-220-230-v-ac-dc-48-230-v/","alternativesUrl":"https://aoctrl.com/api/mcp/products/REL52437/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/REL52437","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/REL52437 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}}