{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"7SR1053-2LA21-2EB0","brand":"Siemens","brandSlug":"siemens","productSlug":"7SR1053-2LA21-2EB0","canonicalUrl":"https://aoctrl.com/siemens/7SR1053-2LA21-2EB0","factsUrl":"https://aoctrl.com/api/mcp/products/7SR1053-2LA21-2EB0","rawCanonicalId":null},"summary":{"shortDescription":"7SR105 enclosure, inputs/outputs and device front: S4 enclosure, 4 cur. trans., 6 BI/BO, 10 LEDs; Measuring inputs: 1/5 A, 50 Hz; Auxiliary voltage: 60-240 V AC/DC, Threshold Binary input 44 V AC/DC; Standard version without cover; Communication: USB interface front. RS485 interface at the back; without thermobox Control of circuit breaker; Protection function package: Standard functions (included in all versions) P…","salesMarkdown":null,"metaTitle":null,"metaDescription":null,"metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["General Purpose Relays"],"specifications":{"Depth":"186 mm","Width":"105 mm","Height":"185 mm","Control":"Yes","Monitoring":"Yes","number of LEDs":"10","lifecycle_stage":"current","Three-Pole Tripping":"Yes","Switching Statistics":"Yes","Design Of The Display":"20 Character x 4 line Backlit LCD","supply voltage / at AC":"60 ... 240 V","supply voltage / at DC":"60 ... 240 V","Frame Size Of Enclosure":"E4 (4U High )","Number Of Function Keys":"7","External Trip Initiation":"Yes","Inrush Current Detection":"No","Number Of Parameter Sets":"2","Parameter Set Switchover":"Yes","Circuit Breaker Monitoring":"Yes","closing lock-out (ANSI 86)":"Yes","Sequence-Of-Events Recorder":"Yes","Type Of Time Synchronization":"BI/Communication Channel","automatic reclosing (ANSI 79)":"No","Product Feature / Logic Editor":"Yes","unbalance protection (ANSI 46)":"Yes","undercurrent protection (ANSI 37)":"No","Number Of Current Inputs / Maximum":"4","Number Of Digital Inputs / Maximum":"6","Product Feature / Conformal Coating":"Yes","trip-circuit supervision (ANSI 74TC)":"Yes","thermal overload protection (ANSI 49)":"Yes","Ambient Temperature / During Operation":"-10 ... +60 °C","Type Of Voltage / Of The Supply Voltage":"AC/DC","protocol / is supported / DNP 3, serial":"Yes","Product Feature / Plug-In Terminal Blocks":"Yes","protocol / is supported / IEC 60870-5-103":"Yes","protocol / is supported / Modbus RTU slave":"Yes","dynamic response value changeover (ANSI 51C)":"No","Fault Recording For Analog And Digital Signals":"Yes","circuit breaker failure protection (ANSI 50BF)":"Yes","sensitive ground current protection (ANSI 50Ns)":"No","definite overcurrent-time protection (ANSI 50/50N)":"Yes","dependent overcurrent-time protection (ANSI 51/51N)":"Yes","Product Component / Operating Interface (On The Front)":"Yes","overcurrent-time protection negative sequence system (ANSI 46)":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1427776&mlfb=7SR1053-2LA21-2EB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/7SR1053-2LA21-2EB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/7SR1053-2LA21-2EB0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/7SR1053-2LA21-2EB0 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}}