{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2946-1CF00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2946-1CF00","canonicalUrl":"https://aoctrl.com/siemens/3RT2946-1CF00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2946-1CF00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2946-1CF00 surge suppressor, RC element, 400-600 V AC, 50/60 Hz, for contactors 3RT2.4, width 25 mm, depth 22.6 mm, height 55 mm.","salesMarkdown":"The Siemens SIRIUS 3RT2946-1CF00 is a surge suppressor built as an RC element, sized for S3 contactors in the 3RT2.4 family. It clips directly onto the contactor coil terminals to suppress voltage spikes when the coil de-energizes — a standard fit for any panel using 3RT2.4 contactors on AC control supplies. At 25 mm wide, 22.6 mm deep, and 55 mm tall, it adds minimal DIN-rail footprint alongside the contactor — no extra panel space required beyond the contactor's own width. ## Why the RC element matters for your contactor An RC surge suppressor does two things: it snubs the inductive kick from the contactor coil when it drops out, and it reduces electromagnetic interference radiated back into the control wiring. On a 3RT2.4 contactor switching motor loads, that means longer contact life and less noise on the PLC inputs sharing the same panel. Because it's designed specifically for the S3 frame size of the 3RT2.4 series, the mechanical fit is direct — no adapter brackets or flying leads to route. The RC element bridges the coil terminals, so the wiring order is coil first, suppressor second.","metaTitle":"Siemens 3RT2946-1CF00 SIRIUS surge suppressor, RC element, 4","metaDescription":"Siemens SIRIUS 3RT2946-1CF00 surge suppressor, RC element for 3RT2.4 contactors, 400-600V AC 50/60 Hz. Active production, available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"22.6mm","Width":"25mm","title":"3RT2946-1CF00","Height":"55mm","at 50 Hz":"400 ... 600V","at 60 Hz":"600 ... 400V","description":"surge suppressor, RC element, 400-600 V AC, 50/60 Hz, for contactors 3RT2.4","1 Rated Value":"50Hz","2 Rated Value":"60Hz","During Storage":"-40 ... +80°C","lifecycle_stage":"current","During Operation":"-25 ... +60°C","Size Of Contactor":"S3","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor","Design Of The Surge Suppressor":"RC element","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/5130edef9a801223195ccff85a100e5a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=683133&mlfb=3RT2946-1CF00"},"ai":{"faq":[{"question":"Where can I buy 3RT2946-1CF00 and what is the lead time?","answer":"The 3RT2946-1CF00 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What contactors does the 3RT2946-1CF00 fit?","answer":"It is designed for S3-size contactors in the Siemens SIRIUS 3RT2.4 series, suppressing the coil on AC control supplies from 400 to 600 V at 50/60 Hz."},{"question":"What is the operating temperature range of 3RT2946-1CF00?","answer":"It operates from -25 to +60 °C and can be stored from -40 to +80 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2946-1CF00","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/3RT2946-1CF00 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}}