{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4302-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4302-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4302-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4302-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4302-6CC, 3-pole miniature circuit breaker, B-curve, 2 A rated, 10 kA breaking capacity at 440 V AC, 50/60 Hz.","salesMarkdown":"## What this MCB is and where it fits The Siemens 5SY4302-6CC is a SENTRON miniature circuit breaker — a 3-pole, B-curve unit rated 2 A at AC with a 10 kA breaking capacity per EN 60898. It's designed for DIN-rail mounting in distribution boards and control panels, protecting branch circuits against overload and short-circuit in commercial and industrial installations. The B-curve characteristic (3–5× In) makes it a good fit for resistive and general-purpose loads where inrush is moderate — lighting, small transformers, or control circuits. ## Key ratings — what they mean for your panel Rated current is 2 A at 35 °C, derated to 1.91 A at 40 °C and 1.75 A at 55 °C — so if your enclosure runs warm, factor the thermal derating into your load budget. The 10 kA breaking capacity at 440 V AC (multi-phase operation) is the maximum fault current this breaker can safely interrupt; that's sufficient for most secondary distribution panels but should be checked against the available fault current at the installation point. Overvoltage category III means it's rated for fixed-installation use downstream of the main service entrance. The 50/60 Hz rating covers both standard line frequencies. ## Mounting and integration notes Occupies 3 modular width units (54 mm total) on a DIN rail. Depth is 76 mm, installation depth 70 mm — verify clearance in your enclosure before committing. Mounting position is any, so vertical or horizontal rail orientation works. Combined terminals top and bottom accept conductors for straightforward daisy-chaining. IP20 with connected conductors — suitable for dry indoor panels only, not washdown or outdoor locations.","metaTitle":"Siemens 5SY4302-6CC SENTRON MCB, 3P B-Curve 2A 10kA","metaDescription":"Siemens 5SY4302-6CC SENTRON miniature circuit breaker, 3-pole, B-curve, 2A rated, 10kA breaking capacity at 440V AC. Active production, available to order. Request RFQ for current","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4302-6CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3-pole, B, 2A","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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"2 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","according to EN 61346-2":"F","at 35 °C / rated value":"2 A","at 40 °C / rated value":"1.91 A","at 45 °C / rated value":"1.86 A","at 50 °C / rated value":"1.81 A","at 55 °C / rated value":"1.75 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Tripping Characteristic Class":"B","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"10 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","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"440 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/b84c4058d86be67f84ffacf186e1a14a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=26271&mlfb=5SY4302-6CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4302-6CC?","answer":"10 kA per EN 60898 at 440 V AC in multi-phase operation."},{"question":"What temperature range does 5SY4302-6CC handle?","answer":"Operating ambient range is -40 °C to 75 °C, with derating above 35 °C as listed in the spec table."},{"question":"Where can I buy 5SY4302-6CC and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4302-6CC","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/5SY4302-6CC 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}}