{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5250-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5250-6","canonicalUrl":"https://aoctrl.com/siemens/5SY5250-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5250-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5250-6, miniature circuit breaker, 2-pole, B characteristic, 10 kA breaking capacity, 400 V AC / 440 V DC, 2 MW units.","salesMarkdown":"It carries a B tripping characteristic — the standard choice for general lighting and socket-outlet circuits where inrush is moderate — and is certified to both IEC / EN 60898-2 and UL1077, so it fits European and North American panel specs alike. The 2-pole design switches both phase and neutral? No — neutral is not switched, so this is a two-pole breaker protecting two line conductors, not a 1P+N. That matters when you're ordering for a split-phase or dual-line feed. Installation depth (behind the panel) is 70 mm. Mounts in any position via the quick-assembly system — snaps onto standard DIN rail. Overvoltage category III suits fixed-installation distribution boards. Sealable for lockout/tagout compliance. Halogen-free and silicon-free, which matters in clean-room or sensitive electronics environments where outgassing can cause contact corrosion. ## Electrical ratings and operating limits Rated voltage: 400 V AC (single- or multi-phase) and 440 V DC. Maximum DC operating voltage goes to 500 V. Frequency 50/60 Hz. Humidity influence: max 95% at 55 °C, derating to 35% at 75 °C. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. This holds up in machine-mounted enclosures near rotating equipment. Current-production part.","metaTitle":"Siemens 5SY5250-6 SENTRON MCB, 2-Pole B-Char, 10kA","metaDescription":"Siemens 5SY5250-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 10 kA per IEC 60898-2, 400 V AC / 440 V DC. Active production. Quoted to order.","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":"5SY5250-6","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, 50 A","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":"5 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/43c96a6fd49f5ed9bba412a85694f7ff.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=133393&mlfb=5SY5250-6"},"ai":{"faq":[{"question":"What compliance documentation does this brand provide for 5SY5250-6 (RoHS, REACH, UL, IEC)?","answer":"Certified to IEC / EN 60898-2 and UL1077. Halogen-free and silicon-free. RoHS/REACH compliance is standard for SENTRON MCBs; specific declarations available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5250-6","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/5SY5250-6 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}}