{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6220-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6220-6","canonicalUrl":"https://aoctrl.com/siemens/5SJ6220-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6220-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 miniature circuit breaker, 5SJ6220-6, 2-pole, B-curve, 20 A rated, 6 kA breaking capacity per EN 60898 / IEC 60947-2, 400 V AC.","salesMarkdown":"## What this 2-pole B-curve 20 A MCB is for The Siemens 5SJ6220-6 is a SENTRON 5SJ6 miniature circuit breaker rated 20 A at 400 V AC with a B tripping characteristic and 6 kA breaking capacity per both EN 60898 and IEC 60947-2. It's a 2-pole unit that snaps onto a DIN rail — standard panel-mount for branch-circuit protection in distribution boards. At 20 A and 400 V line-to-line, it handles a single-phase or two-pole load in a 230/400 V system. On a 230/400 V three-phase panel, a 2-pole breaker like this feeds a 400 V single-phase load or a 230 V load with both poles switched. The B-curve (3-5x In) is the right choice for resistive loads, lighting, and general wiring — it clears a short circuit fast but won't nuisance-trip on a brief motor start like a C-curve would. The DC rating maxes out at 60 V, so it's usable on low-voltage DC control circuits but not for 110 V DC battery banks. Installation depth is 70 mm, and it occupies 2 width units (roughly 36 mm) in the panel. The breaker is sealable, which matters for panel builders who need to lock settings after commissioning. Ambient temperature range is -20 to +45 °C, with periodic excursions to +55 °C and up to 95% humidity. Vibration resistance is rated at 50 m/s² from 25 to 150 Hz and 60 m/s² from 10 to 150 Hz per IEC 60068-2-6 — it'll hold up on a machine skid or in a panel near rotating equipment.","metaTitle":"Siemens 5SJ6220-6 SENTRON MCB, 2-Pole B 20A 6kA 400V","metaDescription":"Siemens SENTRON 5SJ6220-6 miniature circuit breaker, 2-pole, B-curve, 20 A, 6 kA breaking capacity at 400 V AC. Current production. Sourced 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":"20 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=263613&mlfb=5SJ6220-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6220-6/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SJ6220-6?","answer":"The 5SJ6220-6 has a 6 kA breaking capacity rated per both EN 60898 and IEC 60947-2 at 400 V AC."},{"question":"What wire sizes does the 5SJ6220-6 accept?","answer":"The terminals accept solid or stranded copper from 0.75 mm² up to 25 mm²."},{"question":"Where can I buy the 5SJ6220-6 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent 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/5SJ6220-6","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/5SJ6220-6 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}}