{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7350-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7350-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7350-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7350-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7350-8, 3-pole miniature circuit breaker, D characteristic, 15 kA breaking capacity (IEC/EN 60898-1 / 60947-2), 400 V AC, 60 V DC, IP20.","salesMarkdown":"The Siemens 5SY7350-8 is a 3-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated 15 kA breaking capacity per IEC/EN 60898-1 and IEC/EN 60947-2. That 15 kA holds at 400 V AC and also at 60 V DC — the same fault-interrupt capability on both sides, which simplifies panel design for mixed AC/DC loads. Under UL 1077 and CSA C22.2 No. 235 the breaking capacity is 5 kA — that's the supplementary-protector rating for North American panels, not the branch-circuit rating. If your BOM calls for UL 489 branch-circuit listing, this part won't satisfy it; but for supplementary protection inside a listed industrial control panel, the 5 kA SCCR at 440 V AC is adequate for most secondary circuits. Temperature range is -40 to 75 °C, with humidity derating above 55 °C (95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. ## Compliance documentation The 5SY7350-8 carries approvals per IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 / CSA C22.2 No. 235. The manufacturer provides RoHS and REACH declarations as standard for the SENTRON family. No separate documentation request needed — these are included with the product or available on the Siemens support portal.","metaTitle":"Siemens 5SY7350-8 SENTRON MCB, 3P D-curve, 15 kA, 400 V AC","metaDescription":"Siemens 5SY7350-8 SENTRON miniature circuit breaker, 3-pole, D tripping characteristic, 15 kA breaking capacity per IEC/EN 60898-1 and 60947-2. IP20. Active production. Sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"15 kA","according to IEC 60947-2 rated value":"15 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.7 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9bdebb0808450de560a486930cfdf26d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=473655&mlfb=5SY7350-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7350-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7350-8 and what is the lead time?","answer":"The 5SY7350-8 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"What is the closest functional second-source to 5SY7350-8?","answer":"The closest functional sibling is the 5SY4304-7CV, also a 3-pole D-curve MCB but with a lower breaking capacity (typically 6 kA or 10 kA depending on variant). The 5SY7350-8 offers a full 15 kA per IEC/EN 60898-1 and 60947-2, so it provides higher fault-interrupt capability. Panel footprint (3 MW, 54 mm wide) and DIN-rail mounting are the same; rewiring is not required if the panel was designed for the 5SY4304-7CV, but the upstream protection coordination must be checked for the increased SCCR."},{"question":"Will 5SY7350-8 drop into a panel specified around 5SY4304-7CV without rewiring?","answer":"Yes — both are 3-pole, 3 MW (54 mm wide), DIN-rail mounted, with the same terminal arrangement. No rewiring needed. However, the 5SY7350-8 has a higher breaking capacity (15 kA vs the 5SY4304-7CV's typical lower rating), so verify that the panel's SCCR and upstream protective device are rated for the higher fault current."},{"question":"What compliance documentation does Siemens provide for 5SY7350-8?","answer":"Siemens provides RoHS and REACH declarations for the SENTRON 5SY7350-8. The product is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 / CSA C22.2 No. 235. Documentation is available on the Siemens support portal or upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7350-8","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/5SY7350-8 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}}