{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5225-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5225-6","canonicalUrl":"https://aoctrl.com/siemens/5SY5225-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5225-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5225-6, 2-pole miniature circuit breaker, B-curve, 10 kA per IEC/EN 60898-2, 76 mm depth, 36 mm width, IP20 with connected conductors.","salesMarkdown":"## What it is and what it does The Siemens 5SY5225-6 is a SENTRON miniature circuit breaker (MCB) with two poles, a B tripping characteristic, and a 10 kA breaking capacity per IEC/EN 60898-2 — also rated 15 kA at DC per IEC 60947-2. That B-curve means it trips between 3 and 5 times rated current, so it's the go-to for residential and light commercial circuits where you're protecting general-purpose wiring and socket outlets, not motor starts or transformer inrush. The 10 kA rating tells you it can safely interrupt a fault current up to that level without welding contacts or cascading upstream — standard for most distribution boards. ## DIN-rail fit and panel integration Snaps onto DIN rail via the quick-assembly system, mounts in any position, and takes up 2 modular width units (36 mm). Depth is 76 mm, installation depth 70 mm — that's the dimension that matters when you're closing the gland plate or door clearance. IP20 with connected conductors means it's protected against solid objects larger than 12 mm but not sealed against moisture; keep it inside the enclosure. ## Environmental and compliance Halogen-free and silicon-free construction, rated for ambient temperatures from -40 °C to 75 °C with derating above 55 °C per the humidity curve. Overvoltage category III, pollution degree 3 — suited for fixed installations in industrial environments where transient overvoltages and conductive dust are expected.","metaTitle":"Siemens 5SY5225-6 SENTRON MCB, 2P B-Curve, 10 kA, 76 mm dept","metaDescription":"Siemens 5SY5225-6 SENTRON 2-pole miniature circuit breaker, B-curve, 10 kA breaking capacity per IEC/EN 60898-2, 76 mm depth, 36 mm width. Current production. Quoted to order again","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY5225-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-2, UL1077","description":"Circuit breaker Universal current 440 V DC 400 V AC 10kA, 2-pole, B, 25A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"440 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":"universal current","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"AC as required, observe DC polarity","Tripping Characteristic Class":"B","at DC according to EN 60898-2":"10 kA","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/DC","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":"500 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","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","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e92882bcdf369b8de51dfd13293f4207.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=447297&mlfb=5SY5225-6"},"ai":{"faq":[{"question":"Where can I buy 5SY5225-6 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 5SY5225-6?","answer":"The 5SY5240-7 is a peer in the same SENTRON 5SY series with the same 2-pole B-curve and 10 kA rating, but it carries a different current rating. Check the trip current on your BOM before substituting — the footprint and DIN-rail fit are identical."},{"question":"What compliance documentation does Siemens provide for 5SY5225-6?","answer":"The part is certified to IEC/EN 60898-2 and UL1077, and is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE, UKCA) and material compliance (RoHS, REACH) are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5225-6","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/5SY5225-6 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}}