{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2028-1AU60","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2028-1AU60","canonicalUrl":"https://aoctrl.com/siemens/3RT2028-1AU60","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2028-1AU60","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2028-1AU60 power contactor, AC-3e/AC-3 38 A, 18.5 kW at 400 V, 3-pole, 277 V AC 60 Hz coil, 1 NO + 1 NC auxiliary contacts, screw terminals, size S0.","salesMarkdown":"## Motor switching and coil fit The 3RT2028-1AU60 is a SIRIUS 3RT power contactor rated AC-3e/AC-3 at 38 A, delivering 18.5 kW at 400 V for three-phase induction motors. That AC-3e rating means it handles the high inrush of starting a squirrel-cage motor and then breaks the running current — the duty cycle that matters for conveyors, pumps, and compressors. The coil is 277 V AC at 60 Hz, so it's specced for North American control voltages on a 60 Hz supply; verify your control transformer matches before wiring. The built-in auxiliary contact block gives you 1 NO + 1 NC, enough for a basic seal-in circuit plus a status feedback to the PLC. For more aux contacts, the S0 frame accepts snap-on side-mount blocks without additional wiring space. Size S0 frame — the compact footprint that fits standard DIN rail or panel-mount. Screw terminals accept up to the rated wire size for 38 A; torque them to the Siemens spec on the label. The 105 x 90 x 55 mm package leaves room for auxiliary blocks and a separate overload relay alongside it in the enclosure.","metaTitle":"Siemens 3RT2028-1AU60 SIRIUS Power Contactor, 38 A, 18.5 kW","metaDescription":"Siemens SIRIUS 3RT2028-1AU60 power contactor, 38 A AC-3e, 18.5 kW at 400 V, 3-pole, 277 V AC 60 Hz coil, 1 NO+1 NC aux, screw terminals, size S0. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"title":"3RT2028-1AU60","Group Code":"R711","description":"power contactor, AC-3e/AC-3, 38 A, 18.5 kW / 400 V, 3-pole, 277 V AC, 60 Hz, auxiliary contacts: 1 NO + 1 NC, screw terminal, size: S0","Product Group":"5336","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"SIRIUS 3RT contactors, 3-pole, up to 250 kW","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : N","Packaging dimensions (L x W x H)":"105.00 x 90.00 x 55.00 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 01-10-09","REACH Art. 33 Duty to inform according to the current list of candidates":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/927cc81386d90f1e3f14ca6b2554ee34.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RT2028-1AU60?tree=CatalogTree"},"ai":{"faq":[{"question":"What are the key ratings for this contactor?","answer":"AC-3e/AC-3 motor switching at 38 A, 18.5 kW at 400 V, 3-pole. Coil is 277 V AC, 60 Hz. Auxiliary contacts: 1 NO + 1 NC. Screw terminals, size S0 frame."},{"question":"What compliance documentation is available?","answer":"RoHS compliant since 01-October-2009. REACH Article 33 candidate-list information is published by Siemens. Export control is AL: N / ECCN: N."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2028-1AU60","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/3RT2028-1AU60 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}