{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1934-5AB01","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1934-5AB01","canonicalUrl":"https://aoctrl.com/siemens/3RT1934-5AB01","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1934-5AB01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1934-5AB01 magnet coil, Size S2, screw terminal, 24 V AC, 50 Hz.","salesMarkdown":"The Siemens 3RT1934-5AB01 is a SIRIUS magnet coil — the replaceable solenoid that pulls in the contactor armature. It is wound for 24 V AC control voltage at 50 Hz and terminates via screw terminals. This specific coil is sized for SIRIUS Size S2 contactor frames, meaning it is the drop-in replacement part when the original coil on a Size S2 contactor fails or needs a different control voltage. The coil is rated for 24 V AC at 50 Hz, with a tolerance band of 0.8 to 1.1 times nominal voltage — meaning it will reliably pick up and hold between about 19.2 V and 26.4 V. That 0.8–1.1 range is the standard operating window for SIRIUS contactor coils; if your control transformer sags below 80 % of nominal under load, the coil may drop out. The screw terminal connection is the traditional field-wiring method, compatible with ring or fork terminals on 1.5–2.5 mm² stranded wire.","metaTitle":"Siemens 3RT1934-5AB01 SIRIUS Magnet Coil, 24 V AC 50 Hz","metaDescription":"Siemens SIRIUS 3RT1934-5AB01 magnet coil for Size S2 contactors. 24 V AC, 50 Hz, screw terminals. Phased-out product; successor is SIRIUS 3RT2 series. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"at 50 Hz":"0.8 ... 1.1","lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"Magnet coil","at 50 Hz rated value":"24 V","Type Of Voltage Of The Control Supply Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=459920&mlfb=3RT1934-5AB01","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1934-5AB01/alternatives.json"},"ai":{"faq":[{"question":"What replaces the 3RT1934-5AB01?","answer":"The manufacturer states the successor is the SIRIUS 3RT2 series. That is the direct form-fit-function replacement path from Siemens."},{"question":"What is the control voltage and frequency?","answer":"It is a 24 V AC coil rated for 50 Hz operation, with a pick-up/drop-out tolerance of 0.8 to 1.1 times nominal voltage."},{"question":"What compliance documentation is available for this part?","answer":"The available spec data does not list specific UL, CSA, CE, or RoHS certificates. Request compliance documentation from the supplier at the time of RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1934-5AB01","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/3RT1934-5AB01 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}}