{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM9346-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM9346-0","canonicalUrl":"https://aoctrl.com/siemens/5SM9346-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM9346-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM9346-0 RC unit for 5SL4, 4-pole, type AC, In: 63 A, 30 mA, Un AC: 400 V.","salesMarkdown":"## What this RC unit is for The Siemens SENTRON 5SM9346-0 is a residual current unit (RC unit) designed to mount below a 5SL4 miniature circuit breaker, forming a combined RCBO. It is a 4-pole, type AC device rated at 63 A and 30 mA tripping current at 400 V AC. Rated at 63 A AC and 30 mA residual tripping current, this unit handles full-load circuits up to 63 A while providing ground-fault protection at 30 mA — the standard threshold for personal protection against electric shock. The 400 V AC rated voltage suits three-phase 4-wire systems (L1, L2, L3, N) common in European industrial and commercial panels. The unit accepts solid conductors from 0.75 to 35 mm² and stranded conductors from 0.75 to 25 mm², with a tightening torque of 2.5 to 3 N·m. That range covers most distribution wiring up to 35 mm² — enough for a 63 A feeder on a 400 V system. The supply cord connects at the top, above the miniature circuit breaker. Installation depth is 70 mm, matching the depth of the 5SL4 breaker it pairs with.","metaTitle":"Siemens SENTRON 5SM9346-0 RC Unit, 63 A, 30 mA, 4P, 400 V AC","metaDescription":"Siemens SENTRON 5SM9346-0 RC unit for 5SL4, 4-pole, type AC, 63 A rated current, 30 mA tripping, 400 V AC. Current lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Solid":"0.75 ... 35 mm²","Width":"54 mm","title":"5SM9346-0","Height":"100 mm","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"RC unit for 5SL4, 4-pole, type AC, In: 63 A, 30 mA, Un AC: 400 V","Mounting type":"Standard rail mounting","During Storage":"-40 ... +75 °C","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"DI unit, type AC, 0.3...63 A, 4P, 30 mA","Ambient temperature":"-25 ... +55 °C","Product designation":"RC unit electronic for 5SL4","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"3","Type of fault current":"AC","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SM9","Current / at AC / rated value":"63 A","Product feature / silicon-free":"Yes","Position / of power supply cord":"Top, above miniature circuit breaker","Supply voltage / at AC / rated value":"400 V","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"30 mA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Size of installation devices / acc. to DIN 43880":"1","Supply voltage / for testing equipment / minimum":"125 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5efbee336ca959e04976430ee89b4e7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629196&mlfb=5SM9346-0"},"ai":{"faq":[{"question":"Where can I buy 5SM9346-0 and how do I get a price?","answer":"The part is sourced and quoted to order against an RFQ; availability and current pricing are confirmed at quote time."},{"question":"What is 5SM9346-0's listed depth?","answer":"The depth is 70 mm, matching the installation depth."},{"question":"What conductor sizes does 5SM9346-0 accept?","answer":"Solid conductors from 0.75 to 35 mm² and stranded conductors from 0.75 to 25 mm²."},{"question":"Will 5SM9346-0 drop into a panel that was specified around 5SY4304-7CV without rewiring?","answer":"No — the 5SY4304-7CV is a 3-pole MCB (not an RC unit) with different depth (76 mm vs 70 mm) and height (90 mm vs 100 mm). The 5SM9346-0 is an RC unit designed to pair with a 5SL4 MCB, so it is not a direct mechanical or functional substitute."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM9346-0","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/5SM9346-0 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}}