{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG5742-2CW30","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG5742-2CW30","canonicalUrl":"https://aoctrl.com/siemens/3UG5742-2CW30","factsUrl":"https://aoctrl.com/api/mcp/products/3UG5742-2CW30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG5 digital monitoring relay, order code 3UG5742-2CW30, Bluetooth-enabled, up to 690 V AC/DC, 15 A, 24…240 V AC/DC supply.","salesMarkdown":"The Siemens 3UG5742-2CW30 is a digital monitoring relay that tracks current, active current, voltage, power factor, and power — all through a single device with Bluetooth connectivity. It handles up to 690 V AC/DC and 15 A, with a universal supply of 24…240 V AC/DC at 50/60 Hz. That wide voltage range means it drops into control panels fed by either 24 VDC or 120/240 VAC without swapping modules. Rated up to 690 V AC/DC and 15 A, this relay covers most motor branch circuits and feeder monitoring inside a standard industrial panel. The 24…240 V AC/DC supply voltage is the same range used across the SIRIUS family, so it shares common control transformer taps and power supplies with contactors and overloads in the same enclosure. On-delay and tripping delay are adjustable from 0.1…999.9 s via two changeover contacts with spring-loaded terminals — that means you get both time-delayed start and fault lockout in one device, no separate timer module needed. This class of monitoring relay is built for continuous tracking of motor loads, pumps, fans, and conveyor drives — any rotating equipment where you need to see current draw, voltage sag, or power factor drift before a bearing fails or a winding overheats. The Bluetooth link lets a technician read real-time values on a phone or tablet without opening the panel door, which is a real time-saver on a lube route or during a shift-change walkdown. ## Terminal and mounting note Strip length around 8 mm avoids whiskers under the cage. Two changeover contacts give you independent NO/NC pairs for alarm and trip circuits.","metaTitle":"Siemens 3UG5742-2CW30 digital monitoring relay, Bluetooth, u","metaDescription":"Siemens 3UG5742-2CW30 digital monitoring relay for current, voltage, power factor, and power. Bluetooth connectivity, up to 690 V AC/DC, 15 A. Active production. RoHS compliant sin","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"Group Code":"R711","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":"Current, active current, voltage, power factor and power monitoring","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : EAR99","Packaging dimensions (L x W x H)":"127.00 x 111.00 x 38.00 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4e607ae901f7e5a123999a11782b0a7.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3UG5742-2CW30?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/3UG5742-2CW30/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings?","answer":"Rated up to 690 V AC/DC and 15 A. Supply voltage 24…240 V AC/DC at 50/60 Hz. On-delay and tripping delay adjustable 0.1…999.9 s. Two changeover contacts with spring-loaded terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG5742-2CW30","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/3UG5742-2CW30 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}}