{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM9626-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM9626-6","canonicalUrl":"https://aoctrl.com/siemens/5SM9626-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM9626-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM9626-6, RC unit electronic for 5SL4, 2-pole, type A, In: 63 A, 300 mA, Un AC: 400 V, instantaneous design, standard rail mounting.","salesMarkdown":"The Siemens SENTRON 5SM9626-6 is an electronic residual current (RC) unit designed as a companion for the 5SL4 miniature circuit breaker series. It provides earth leakage protection in a 2-pole, Type A configuration, rated at 63 A with a 300 mA tripping threshold, on a 230/400 V AC supply at 50 Hz. The instantaneous design means it trips without intentional delay, which is the correct choice for general-purpose socket-outlet circuits and equipment protection where selectivity against transient surges is not required. The 70 mm installation depth matches the 5SL4 MCB it couples with, so the assembly sits flush in the distribution board. The supply feed is from the top, above the miniature circuit breaker — maintain that orientation for correct wiring. Terminal torque is 2.5 to 3 N·m; the screw terminals accept solid conductors from 0.75 to 35 mm² and stranded from 0.75 to 25 mm², covering most downstream circuit sizes up to the 63 A rating. IP20 rating applies once the distribution board is installed with conductors connected — this is an enclosed-panel device, not for wet or outdoor locations. ## Key ratings in context The 300 mA residual tripping current is a common threshold for fire protection and equipment-level leakage detection, rather than personnel protection (which typically uses 30 mA). The 3 kA surge current resistance means the unit can withstand transient overcurrents from switching events or lightning-induced surges without nuisance tripping — important on supply networks with known surge activity. Overvoltage category III confirms suitability for fixed-installation distribution boards downstream of the main service entrance. The 10 000 mechanical switching cycles typical service life aligns with the coupled MCB's endurance for normal panel operation.","metaTitle":"Siemens 5SM9626-6 SENTRON RC Unit, 63 A, 300 mA, Type A, 2P","metaDescription":"Siemens 5SM9626-6 SENTRON residual current unit for 5SL4 MCB. 63 A, 300 mA, Type A, 2-pole, 230/400 V AC. Current lifecycle, sourced to order. Request quote.","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":"36 mm","title":"5SM9626-6","Height":"100 mm","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"RC unit for 5SL4, 2-pole, type A, In: 63 A, 300 mA, Un AC: 400 V","Wertebereich":"-25 ... +55 °C","Mounting type":"Standard rail mounting","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"DI unit, type A, 0.3...63 A, 2P, 300 mA","Ambient temperature":"-40 ... +75 °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":"2","Type of fault current":"A","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":"230/400 V","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"300 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/e7bd3f21fafe0c3790b7b0a8b56290ae.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629209&mlfb=5SM9626-6"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SM9626-6?","answer":"The 5SM9626-6 is sourced and quoted to order against an RFQ. Submit a request and availability along with current pricing will be confirmed at quote time."},{"question":"What are the physical dimensions of 5SM9626-6?","answer":"Depth is 70 mm, width is 36 mm (2 width units), height is 100 mm. Installation depth is also 70 mm."},{"question":"What wire sizes does the 5SM9626-6 accept?","answer":"Solid conductors from 0.75 to 35 mm² and stranded conductors from 0.75 to 25 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM9626-6","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/5SM9626-6 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}}