{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2027-1HA40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2027-1HA40","canonicalUrl":"https://aoctrl.com/siemens/3RT2027-1HA40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2027-1HA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2027-1HA40 power contactor, AC-3e/AC-3, 32 A, 15 kW / 400 V, 3-pole, 12 V DC coil, 1 NO + 1 NC auxiliary contacts, screw terminal, frame size S0.","salesMarkdown":"## Motor-load switching with a fixed auxiliary deck The Siemens 3RT2027-1HA40 is a 3-pole power contactor rated AC-3e/AC-3 at 32 A, delivering 15 kW at 400 V for standard induction motor duty. The 12 V DC coil operates across a 0.7–1.25×Uc tolerance band, so it holds in at 8.4 V and pulls in reliably at 15 V — useful when the control supply sags under load. The built-in 1 NO + 1 NC auxiliary contact set is fixed; frame size S0 means no auxiliary switch block can be added later, so if your feedback circuit needs more than one mirror contact, spec the variant with the wider auxiliary deck from the start. ## Panel fit and wiring constraints Packaged dimensions are 92.0 × 54.0 × 115.5 mm — fits a standard DIN-rail footprint in the S0 frame envelope. Screw terminals accept the usual 0.75–2.5 mm² power wiring; the auxiliary terminals share the same pitch. No auxiliary switch can be stacked, so plan your NO/NC count at the order line. The 1-piece unit quantity matches line-item BOM quantities without fractional packaging.","metaTitle":"Siemens 3RT2027-1HA40 Power Contactor, 32 A AC-3e, 12 V DC","metaDescription":"Siemens 3RT2027-1HA40 power contactor, AC-3e/AC-3 rated 32 A, 15 kW at 400 V. 12 V DC coil, 1 NO + 1 NC auxiliary. Active production. RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"title":"3RT2027-1HA40","Group Code":"R711","description":"power contactor, AC-3e/AC-3, 32 A, 15 kW / 400 V, 3-pole, 12 V DC, 0.7-1.25* Uc, auxiliary contacts: 1 NO + 1 NC, screw terminal, frame size: S0 no auxiliary switch can be added","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":"Ordering Data Overview","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : N","Packaging dimensions (L x W x H)":"92.00 x 54.00 x 115.5 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/b7064597839287ce517393566670252b.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RT2027-1HA40?tree=CatalogTree"},"ai":{"faq":[{"question":"What is the group code and product group for this contactor?","answer":"The group code is R711 and the product group is 5336, used for catalog classification and cross-reference lookups."},{"question":"What compliance documentation is available for the 3RT2027-1HA40?","answer":"RoHS compliance is confirmed since 1 October 2009. REACH Article 33 candidate-list information is available. Export control is AL: N / ECCN: N."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2027-1HA40","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/3RT2027-1HA40 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}}