{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT5945-5AM01","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT5945-5AM01","canonicalUrl":"https://aoctrl.com/siemens/3RT5945-5AM01","factsUrl":"https://aoctrl.com/api/mcp/products/3RT5945-5AM01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT5945-5AM01 magnet coil, 220 V AC 50/60 Hz, 0.8–1.1 A at 50 Hz, for contactor range.","salesMarkdown":"## Magnet coil for SIRIUS contactor – what it is The 3RT5945-5AM01 is a replacement or spare magnet coil for Siemens SIRIUS contactors, designed to pull in and hold the contactor armature. It operates on 220 V AC supply, 50/60 Hz, drawing between 0.8 and 1.1 A at 50 Hz during the pick-up and hold cycle. ## Current draw and what it means for the panel The 0.8 to 1.1 A at 50 Hz is the coil's inrush and sealed current – the higher end is the pick-up surge, the lower end is the holding current once the contactor is closed. This determines the control transformer sizing and the fuse or circuit breaker protecting the control circuit. On a packed DIN-rail panel, that 1.1 A inrush can drop the control bus voltage if the transformer is undersized, so match the coil draw to the transformer VA rating.","metaTitle":"Siemens 3RT5945-5AM01 SIRIUS Magnet Coil, 220 V AC, 50/60 Hz","metaDescription":"Siemens 3RT5945-5AM01 SIRIUS magnet coil, 220 V AC 50/60 Hz, current draw 0.8–1.1 A at 50 Hz. Active production – quoted to order. RFQ for availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"title":"3RT5945-5AM01","at 50 Hz":"0.8 ... 1.1","description":"Magnetic coil for contactor Magnetic coil for contactor 220 V AC, 50/60 Hz","lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"Magnet coil","at 50 Hz rated value":"220 V","Type Of Voltage Of The Control Supply Voltage":"AC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/28a2fcd89bab48cdd09b788854ba015b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=580092&mlfb=3RT5945-5AM01"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT5945-5AM01","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/3RT5945-5AM01 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}