{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3356-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3356-6","canonicalUrl":"https://aoctrl.com/siemens/5SM3356-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3356-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3356-6 RCCB, 4-pole, Type A, 63 A at 40 °C, 500 V AC, 10 kA SCCR, DIN rail mount, IP20.","salesMarkdown":"The Siemens 5SM3356-6 is a SENTRON residual current circuit breaker (RCCB), 4-pole, Type A, rated 63 A at 40 °C with a 500 V AC supply voltage. It's an instantaneous design — no intentional time delay — so it trips on the fault-current waveform as it occurs, which matters when coordinating with upstream overcurrent devices. Snaps onto DIN rail (REG profile), occupies 4 width units at 36 mm wide. Depth is 70 mm, same as the installation depth — no extra clearance needed behind the rail. IP20 with conductors connected and the distribution board installed; that's enclosed-panel protection, not open-air. At 50 °C it derates to 60.48 A, at 55 °C to 57.96 A, stepping down to 50.4 A at 70 °C. The permissible I²t is 70,000 A²s, and the let-through current rating is 7,500 A, which are the numbers the downstream cable and busbar sizing depend on.","metaTitle":"Siemens 5SM3356-6 SENTRON RCCB, 63 A, 4-Pole, Type A, 500 V","metaDescription":"Siemens 5SM3356-6 SENTRON RCCB, 63 A rated at 40 °C, 4-pole Type A, 500 V AC, 10 kA SCCR. DIN rail mount, IP20. Current-production part sourced to order. Request a quote.","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","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Rated Value":"50 Hz","Mounting Type":"DIN rail (REG)","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Operating Frequency":"50 Hz","Product Designation":"RCCB","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":"4","Type Of Fault Current":"A","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","I2t value / permissible":"70 000 A²·s","at 40 °C / rated value":"63 A","at 45 °C / rated value":"63 A","at 50 °C / rated value":"60.48 A","at 55 °C / rated value":"57.96 A","at 60 °C / rated value":"55.44 A","at 65 °C / rated value":"52.92 A","at 70 °C / rated value":"50.4 A","Short-Circuit Current Rating":"10 kA","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"0.8 kA","Position / Of Power Supply Cord":"top or bottom","Let-Through Current / Permissible":"7 500 kA","Protection Against Electrical Shock":"Finger and back-of-hand safe","supply voltage / at AC / rated value":"500 V","Surge Current Resistance / Rated Value":"1 kA","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"No","Tripping Residual Current / Rated Value":"30 mA","operating current / at AC / rated value":"63 A","Supply Voltage / For Testing Equipment / Minimum":"195 V","size of installation devices / acc. to DIN 43880":"1","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=133936&mlfb=5SM3356-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3356-6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SM3356-6 and what is the lead time?","answer":"Sourced to order through independent distribution. Submit an RFQ for current availability and lead time — we confirm pricing and stock at quote time."},{"question":"What is the 5SM3356-6's depth?","answer":"70 mm, which matches the installation depth. No extra rear clearance needed beyond the DIN rail channel."},{"question":"Will the 5SM3356-6 drop into a panel built for a 5SY4310-7CV?","answer":"Both are 4-pole DIN-rail RCCBs, but the 5SM3356-6 is Type A instantaneous, while the 5SY4310-7CV is a different variant — verify the fault-current type and time-delay characteristic before swapping. The physical footprint (4 width units, 36 mm wide) is the same."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3356-6","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/5SM3356-6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}