{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6250-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6250-6","canonicalUrl":"https://aoctrl.com/siemens/5SJ6250-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6250-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6, miniature circuit breaker, 2-pole, B-curve, 50 A, 6 kA, 400 V AC, 70 mm depth.","salesMarkdown":"The 50 A rating governs the continuous load it can carry in a 40 °C ambient — derate above that per the thermal curve. At 45 °C ambient, which is realistic inside a sealed enclosure near a kiln or preheater, you'd knock the continuous load back roughly 10–15% to stay below the bimetal trip threshold. Terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm² — that's a wide grip, covering everything from a 1.5 mm² control circuit tap to a 16 mm² feeder.","metaTitle":"Siemens 5SJ6250-6 SENTRON MCB, 2-Pole B 50A 6kA 400V","metaDescription":"Siemens 5SJ6250-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 50 A, 6 kA breaking capacity per EN 60898/IEC 60947-2, 400 V AC. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Solid":"0.75 ... 25 mm²","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-20 ... +45 °C","Product designation":"Miniature circuit breakers","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"Miniature circuit breaker 5SJ6","Energy limiting class":"3","Number of width units":"2","Number of poles / Note":"2","circuit-breaker / Design":"5SJ6","Current / at AC / rated value":"50 A","Tripping characteristic class":"B","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"6 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","Insulation voltage / at AC / rated value":"440 V","Vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 10 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Mechanical service life (switching cycles) / typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=54922&mlfb=5SJ6250-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6250-6/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of 5SJ6250-6?","answer":"2-pole, B-curve, 50 A at 400 V AC, 6 kA breaking capacity per EN 60898 and IEC 60947-2, 60 V DC maximum, 20 000 mechanical switching cycles typical."},{"question":"Will 5SJ6250-6 drop into a panel specified for 5SJ6220-6 without rewiring?","answer":"Yes — both are 2-pole 5SJ6 breakers with the same 70 mm depth, 2 width units, and terminal range of 0.75–25 mm². The only difference is the current rating: 50 A vs 20 A. If the panel's bus bars and conductors are sized for 50 A, it's a straight swap."},{"question":"Where can I buy 5SJ6250-6?","answer":"Sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6250-6","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/5SJ6250-6 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}}