{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2946-1CB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2946-1CB00","canonicalUrl":"https://aoctrl.com/siemens/3RT2946-1CB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2946-1CB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2946-1CB00 surge suppressor, RC element, 24-48 V AC, 50/60 Hz, 24-70 V DC, for contactors 3RT2.4.","salesMarkdown":"The Siemens SIRIUS 3RT2946-1CB00 is a surge suppressor built as an RC element, designed to clamp voltage transients across the coil of a contactor. It mounts directly onto the SIRIUS 3RT2.4 contactor family, suppressing inductive kickback that would otherwise shorten coil life or radiate EMI into nearby control wiring. It accepts control supply voltages of 24 to 48 V AC at 50/60 Hz, and 24 to 70 V DC, making it suitable for both AC- and DC-piloted circuits. The RC element is polarity-independent for AC, but for DC applications verify the wiring direction matches the suppressor's internal diode if present — the datasheet's connection diagram is the reference here. The suppressor measures 25 mm wide, 55 mm high, and 23 mm deep. It clips onto the contactor's coil terminals, so it adds no DIN-rail footprint — the space it occupies is the volume above the contactor itself. No derating curve is listed, so assume full rated voltage across this range unless the contactor's own thermal limits intervene. No last-time-buy or surplus-channel dependency applies. If you are replacing a failed unit or filling a new BOM line, this is a direct drop-in with no cross-reference needed.","metaTitle":"Siemens 3RT2946-1CB00 SIRIUS Surge Suppressor, RC Element, 2","metaDescription":"Siemens SIRIUS 3RT2946-1CB00 surge suppressor, RC element, 24-48V AC 50/60Hz, 24-70V DC, for contactors 3RT2.4. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"23mm","Width":"25mm","at DC":"24 ... 70V","title":"3RT2946-1CB00","Height":"55mm","at 50 Hz":"24 ... 48V","at 60 Hz":"48 ... 24V","description":"surge suppressor, RC element, 24-48 V AC, 50/60 Hz, 24-70 V DC, 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/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1f6e0908b13696ef825a2729567ad637.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=683129&mlfb=3RT2946-1CB00"},"ai":{"faq":[{"question":"What are the key voltage ratings for this surge suppressor?","answer":"It is rated for 24 to 48 V AC at 50/60 Hz and 24 to 70 V DC. The control supply voltage can be AC or DC."},{"question":"What is the physical size of the 3RT2946-1CB00?","answer":"Width 25 mm, height 55 mm, depth 23 mm. It mounts directly on the contactor coil terminals, so it does not consume DIN-rail space."},{"question":"What contactors is this suppressor designed for?","answer":"It is specified for the Siemens SIRIUS 3RT2.4 contactor family. It clips onto the coil terminals of those contactors."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2946-1CB00","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/3RT2946-1CB00 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}}