{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG5512-1AR21","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG5512-1AR21","canonicalUrl":"https://aoctrl.com/siemens/3UG5512-1AR21","factsUrl":"https://aoctrl.com/api/mcp/products/3UG5512-1AR21","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG5512-1AR21 line monitoring relay, phase failure, phase sequence and asymmetry monitoring, 3x 160-690 V AC, 15-70 Hz, 1 changeover contact, screw terminal.","salesMarkdown":"The Siemens 3UG5512-1AR21 is a line monitoring relay from the SIRIUS family, designed to supervise three-phase mains supplies. It detects phase failure, incorrect phase sequence, and asymmetry conditions across a supply range of 3x 160-690 V AC at 15-70 Hz, outputting a single changeover contact via screw terminals. The 160-690 V AC operating range covers standard low-voltage networks from 208 V to 600 V nominal, including 400 V and 480 V systems common in industrial panels. The single changeover contact (SPDT) is rated for signal-level switching to a PLC digital input or contactor coil; it is not a power-switching contactor. Screw terminal connection matches existing panel wiring practices. The packaging dimensions of 128 x 109 x 33 mm give a compact footprint for DIN-rail mounting, leaving room alongside motor starters or distribution blocks. RoHS compliance is effective from June 1, 2023, meaning units manufactured after that date meet the substance restrictions. The REACH declaration identifies lead above the 0.1% threshold, which is typical for certain internal solder joints or contact materials in this class of relay.","metaTitle":"Siemens 3UG5512-1AR21 Line Monitoring Relay, 160-690 V AC","metaDescription":"Active production monitoring relay for phase failure, sequence, and asymmetry. 3x 160-690 V AC, 15-70 Hz, 1 changeover contact, screw terminal. RoHS compliant since June 2023.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"title":"3UG5512-1AR21","Group Code":"R711","description":"monitoring relay phase failure, phase sequence and asymmetry monitoring 3x 160-690 V AC, 15-70 Hz 1 changeover contact screw terminal SIL 1/PL c","Product Group":"5885","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"Line monitoring","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : N","Packaging dimensions (L x W x H)":"128.00 x 109.00 x 33.00 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 01-06-23","REACH Art. 33 Duty to inform according to the current list of candidates":"Lead CAS-No. 7439-92-1 > 0,1 % (w / w)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d5e47eb861cc5931e65d6f9900429264.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3UG5512-1AR21?tree=CatalogTree"},"ai":{"faq":[{"question":"What is the group code and product group for this part?","answer":"The group code is R711 and the product group is 5885."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG5512-1AR21","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/3UG5512-1AR21 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}