{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6210-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6210-6","canonicalUrl":"https://aoctrl.com/siemens/5SJ6210-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6210-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 series, miniature circuit breaker 5SJ6210-6, 2-pole, B-curve, 10 A rated current, 6 kA breaking capacity at 400 V AC, 70 mm installation depth.","salesMarkdown":"## Siemens 5SJ6210-6 — 2-pole B-curve MCB for 400 V AC branch circuits It breaks fault currents up to 6 kA per EN 60898 at 400 V AC, which covers the standard fault-current duty for most commercial and light-industrial final subcircuits in 400/230 V TN systems. The 6 kA rating matches the typical prospective short-circuit current at the distribution board in a building installation — no need to uprate for a standard panel. It trips fast on a short-circuit but avoids nuisance trips on moderate inrush from small motors or capacitive loads. ## Terminal capacity and panel fit The screw terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm², which covers the full range from 1.5 mm² lighting circuits up to 6 or 10 mm² feeder tails. The 70 mm installation depth matches the standard SENTRON 5SJ6 / 5SL6 family footprint — it clips onto a DIN rail and occupies 2 width units (36 mm). Ambient temperature range is -20 to +45 °C, with periodic excursions to +55 °C at up to 95% humidity. Storage range is wider (-40 to +75 °C), covering shipping and warehouse conditions. Overvoltage category 3 and insulation voltage 440 V AC confirm it is rated for fixed-installation distribution boards where transient overvoltages from the utility side are expected. The mechanical endurance of 20 000 switching cycles is typical for an MCB in a panel that sees occasional manual switching plus fault interruptions.","metaTitle":"Siemens 5SJ6210-6 SENTRON MCB, 2-Pole B 10A 6kA 400V","metaDescription":"Siemens 5SJ6210-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 10A rated, 6kA breaking capacity per EN 60898 at 400V AC. Current lifecycle stage, sourced to order. IP20, hal","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":"10 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=298527&mlfb=5SJ6210-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6210-6/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SJ6210-6?","answer":"The breaking capacity is 6 kA at 400 V AC per EN 60898, and also 6 kA per IEC 60947-2, which covers the standard fault-current duty for building-installation distribution boards."},{"question":"What conductor sizes does 5SJ6210-6 accept?","answer":"The terminals accept solid conductors from 0.75 mm² up to 25 mm², and stranded conductors from 0.75 mm² up to 25 mm², covering typical branch-circuit wiring from 1.5 mm² to 10 mm²."},{"question":"Where can I buy 5SJ6210-6 and how is it quoted?","answer":"The part is sourced through independent distribution channels and is quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quote — no stock count or price is published here."},{"question":"Will 5SJ6210-6 drop into a panel specified around 5SL6563-7BB?","answer":"Both are 2-pole SENTRON MCBs on the same DIN-rail footprint (2 width units, 70 mm installation depth), but the 5SL6563-7BB is a 63 A C-curve 1P+N device with a neutral-switching pole, while the 5SJ6210-6 is a 10 A B-curve 2-pole device. The physical fit is the same, but the electrical ratings and tripping characteristics are different — verify the circuit requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6210-6","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/5SJ6210-6 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}}