{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG5511-2AR20","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG5511-2AR20","canonicalUrl":"https://aoctrl.com/siemens/3UG5511-2AR20","factsUrl":"https://aoctrl.com/api/mcp/products/3UG5511-2AR20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG5 Line monitoring relay, 3UG5511-2AR20, phase sequence monitoring, 3x 160-690 V AC, 15-70 Hz, 1 changeover contact, spring-loaded terminal.","salesMarkdown":"The Siemens 3UG5511-2AR20 is a phase-sequence monitoring relay from the SIRIUS 3UG5 line-monitoring family. It watches for correct phase rotation on a three-phase supply from 160 to 690 V AC, 15–70 Hz, and drops its single changeover contact if the sequence is wrong or a phase is lost. That one contact — spring-loaded terminals — can kill a motor starter or sound an alarm before the line sees a reverse-spin jam. The 160–690 V AC range covers the common low-voltage motor feeds — 208, 400, 480, and 690 V — without needing a separate control transformer or a different relay for each voltage. The 15–70 Hz window includes both 50 Hz and 60 Hz grids plus variable-frequency drives running below nominal frequency; if your line runs a VFD at 20 Hz output, this relay still sees the phase rotation correctly. No screwdriver torque check needed — push the wire in, it locks. That shaves a few seconds per termination on the panel build, and on a multi-station line those seconds add up to real cycle-time savings. Only one changeover contact (1 CO) — enough to signal a PLC digital input or drop out a contactor coil. If you need separate alarm and run-status outputs, you will need an auxiliary relay or a different variant with more contacts. Plan the I/O count before you wire. RoHS compliant since 01-06-23, with a REACH candidate-list declaration for lead (CAS 7439-92-1 > 0.1% w/w).","metaTitle":"Siemens 3UG5511-2AR20 monitoring relay, phase sequence, 160-","metaDescription":"Active Siemens monitoring relay for phase sequence on 3x 160-690 V AC, 15-70 Hz. 1 changeover contact, spring-loaded terminal. RoHS compliant since 01-06-23. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"title":"3UG5511-2AR20","Group Code":"R711","description":"monitoring relay phase sequence monitoring 3x 160-690 V AC, 15-70 Hz 1 changeover contact spring-loaded terminal","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)":"125.00 x 110.00 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/f7706f4b801b71db29c88a27e8dd34ae.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3UG5511-2AR20?tree=CatalogTree"},"ai":{"faq":[{"question":"What compliance documentation is available for the 3UG5511-2AR20?","answer":"RoHS compliant since 01-06-23. REACH Article 33 declaration for lead (CAS 7439-92-1 > 0.1% w/w). Export control classification AL: N / ECCN: N."},{"question":"What is the group code and product group for this relay?","answer":"Group Code R711, Product Group 5885."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG5511-2AR20","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/3UG5511-2AR20 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}}