{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4302-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4302-6","canonicalUrl":"https://aoctrl.com/siemens/5SY4302-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4302-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4302-6 miniature circuit breaker, 3-pole, B-curve, 10 kA (EN 60898), 400 V AC, 2 MW units wide.","salesMarkdown":"The Siemens SENTRON 5SY4302-6 is a 3-pole miniature circuit breaker (MCB) with a B tripping curve, rated 10 kA breaking capacity per EN 60898 and 35 kA per IEC 60947-2 at 400 V AC. The 10 kA figure under EN 60898 is the standard household/commercial rating; the 35 kA under IEC 60947-2 gives you the industrial selectivity headroom — a panel designer uses the higher number for coordination studies when the MCB sits downstream of a larger breaker or fuse. ## Mounting and integration — DIN-rail fit and spacing The 5SY4302-6 occupies 2 modular width units (MW) on a DIN rail, with a width of 54 mm, depth 76 mm, and height 90 mm. The quick-assembly fastening method snaps onto the rail without tools. Installation depth is 70 mm, which matters when you're sizing a shallow gland plate or back-panel clearance. IP20 protection with connected conductors — standard for inside a panel; no special sealing needed for dry indoor locations. ## Environmental range and suitability for mill or industrial environments Halogen-free and silicon-free construction is a plus in corrosive atmospheres — no halogens to form acids if the breaker arcs, and no silicone outgassing that could foul contacts in sensitive control circuits. Degree of pollution 3 and overvoltage category III confirm it's rated for the conductive-dust and transient conditions typical of industrial switchgear — not just clean office environments.","metaTitle":"Siemens 5SY4302-6 SENTRON MCB, 3P B-Curve, 10 kA, 400 V","metaDescription":"Siemens SENTRON 5SY4302-6 miniature circuit breaker, 3-pole, B-curve, 10 kA per EN 60898, 400 V AC. Active production. Sourced to order. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4302-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"MCB 400V AC 10kA, 3-pole, B, 2A, T=70mm","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","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"35 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":"1.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f793cd9f92c259a008f176fac0d3c6f7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1385691&mlfb=5SY4302-6"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4302-6?","answer":"10 kA per EN 60898 and 35 kA per IEC 60947-2 at 400 V AC, with 15 kA at 60 V DC per IEC 60947-2."},{"question":"Where can I buy 5SY4302-6?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What standards does 5SY4302-6 comply with?","answer":"It complies with IEC/EN 60898-1, IEC/EN 60947-2, and UL1077, and carries the SENTRON brand designation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4302-6","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/5SY4302-6 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}}