{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2028-2BB40-Z W96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2028-2BB40-Z-W96","canonicalUrl":"https://aoctrl.com/siemens/3RT2028-2BB40-Z-W96","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2028-2BB40-Z%20W96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2028-2BB40-Z W96 power contactor, AC-3e/AC-3, 38 A, 18.5 kW / 400 V, 3-pole, 24 V DC coil, 1 NO + 1 NC auxiliary contacts, spring-loaded terminal, size S0.","salesMarkdown":"## Motor-rated switching for panel builds The Siemens 3RT2028-2BB40-Z W96 is a SIRIUS 3RT power contactor rated AC-3e/AC-3 at 38 A, good for 18.5 kW motor loads on a 400 V three-phase line. That AC-3e rating means it handles the inrush of a standard squirrel-cage induction motor during starting and breaking, not just resistive heating — the duty class that matters for conveyor, pump, and fan circuits. The 24 V DC coil keeps it on the same control voltage as most PLC digital outputs, so you can drive it directly without an interposing relay. The auxiliary contact block is built in: 1 NO + 1 NC, enough for a feedback signal to the controller and a seal-in circuit.","metaTitle":"Siemens 3RT2028-2BB40-Z W96 Power Contactor, 38 A, 24 VDC, S","metaDescription":"Siemens SIRIUS 3RT2028-2BB40-Z W96 power contactor, AC-3e/AC-3 rated 38 A, 18.5 kW at 400 V, 24 VDC coil, 1 NO+1 NC aux, spring terminals, size S0. Active production, sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Group Code":"R711","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)":"380.00 x 290.00 x 190.00 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ca7696b6d0222e17896e79f8b6000b4a.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RT2028-2BB40-ZW96?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2028-2BB40-Z%20W96/alternatives.json"},"ai":{"faq":[{"question":"What is the group code and product group for this part?","answer":"Group code R711, product group 5336. These are Siemens internal classification codes used for catalog sorting and cross-reference lookups."},{"question":"What compliance documentation is available for this contactor?","answer":"RoHS compliant since 01-10-09, with REACH Article 33 candidate list disclosure. Export control is AL: N / ECCN: N, meaning no special export licensing is required."},{"question":"What are the key ratings for this contactor?","answer":"AC-3e/AC-3 rated 38 A, 18.5 kW at 400 V, 3-pole. Coil is 24 V DC. Auxiliary contacts: 1 NO + 1 NC. Terminals are spring-loaded, size S0 frame."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2028-2BB40-Z-W96","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/3RT2028-2BB40-Z-W96 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}}