{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM9323-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM9323-0","canonicalUrl":"https://aoctrl.com/siemens/5SM9323-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM9323-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RC unit electronic for 5SL4, 2-pole, type AC, 40 A, 30 mA, Un AC 400 V, 6 kA breaking capacity, 2 MW, standard rail mounting.","salesMarkdown":"The Siemens SENTRON 5SM9323-0 is a residual current (RC) unit designed to snap onto a 5SL4 miniature circuit breaker, creating a combined RCBO assembly. It's a 2-pole, type AC device rated at 40 A with 30 mA sensitivity, operating at 400 V AC, 50 Hz. The supply connects to the top, above the miniature circuit breaker. Installation depth is 70 mm. IP20 rating applies once the distribution board cover is fitted with conductors connected — so it's panel-internal, not for wet or outdoor locations.","metaTitle":"Siemens SENTRON 5SM9323-0 RC Unit, 2P, 40 A, 30 mA, 400 V AC","metaDescription":"Siemens SENTRON 5SM9323-0 residual current unit for 5SL4 MCB, 2-pole, type AC, 40 A rated, 30 mA sensitivity, 400 V AC, 6 kA breaking capacity. Active lifecycle, sourced 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","Width":"36 mm","title":"5SM9323-0","Height":"100 mm","Maximum":"55 °C","Minimum":"-25 °C","description":"RC unit for 5SL4, 2-pole, type AC, In: 40 A, 30 mA, Un AC: 400 V","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Standard rail mounting","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Variations":"DI unit, type AC, 0.3...40 A, 2P, 30 mA","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","Product Feature Silicon-Free":"Yes","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Top, above miniature circuit breaker","according to EN 60898 rated value":"6 kA","according to IEC 61008-1 rated value":"6 kA","Switching Function Short-Term Delayed":"No","value range of the supply voltage at AC":"400 V","Ambient Temperature During Storage Minimum":"-40 °C","Value Range Of The Supply Voltage Frequency":"50 Hz","Supply Voltage For Testing Equipment Minimum":"125 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"No","for rated value of the current at AC in hot operating state per pole":"7.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/244c935fd0778f32f533240c6770673e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629173&mlfb=5SM9323-0"},"ai":{"faq":[{"question":"What are the key ratings of the 5SM9323-0?","answer":"2-pole, type AC residual current unit, 40 A rated current, 30 mA sensitivity, 400 V AC supply, 50 Hz, 6 kA breaking capacity per EN 60898 and IEC 61008-1."},{"question":"Will the 5SM9323-0 fit a panel designed for the 5SL6550-7BB?","answer":"The 5SM9323-0 is a different device class — it's an RC unit for the 5SL4 MCB, not a standalone miniature circuit breaker like the 5SL6550-7BB. Both share the same 36 mm width and 70 mm installation depth, so the DIN-rail footprint matches, but the 5SM9323-0 requires a 5SL4 breaker to function as an RCBO assembly."},{"question":"Where can I buy the 5SM9323-0?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM9323-0","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/5SM9323-0 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}}