{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ3620-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ3620-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ3620-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ3620-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ3 series miniature circuit breaker, order code 5SJ3620-7, 20 A rated, C tripping characteristic, 4.5 kA breaking capacity, 3P+N, 400 V AC.","salesMarkdown":"The Siemens SENTRON 5SJ3620-7 is a 20 A miniature circuit breaker with a C tripping characteristic, designed for 3P+N (4-pole) 400 V AC circuits. Rated 20 A at 400 V AC, this breaker handles a 3-phase+N load up to roughly 13.8 kW resistive. Breaking capacity of 4.5 kA per both EN 60898 and IEC 60947-2 tells you the breaker can safely interrupt a fault up to that level; if your available fault current at the panel exceeds 4.5 kA, you need an upstream current-limiting device or a higher-rated breaker. Insulation voltage rated 440 V AC gives headroom on 400 V systems. The 3P+N design switches all three phases and switches the neutral, which is required for TN-S or TT systems where you want the neutral isolated on a fault. Wire range accepts solid or stranded conductors from 0.75 mm² up to 25 mm² — covers everything from a 1.5 mm² lighting circuit to a 6 mm² sub-feed. The terminals are sealable, which matters for utility-metering or revenue-grade installations where the meter seal must stay intact. Touch protection is built in (IP20 with conductors connected), so the busbar area is finger-safe once the breaker is snapped onto the DIN rail. ## Integration notes Ambient temperature range of -20 to +45 °C covers unheated electrical rooms and outdoor enclosures in temperate climates; storage range extends to -40 to +75 °C. Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 10–150 Hz per IEC 60068-2-6 — suitable for installation near rotating machinery or on shipboard panels.","metaTitle":"Siemens SENTRON 5SJ3620-7 MCB, 20 A, C-curve, 4.5 kA","metaDescription":"Siemens SENTRON 5SJ3620-7 miniature circuit breaker, 20 A, C tripping characteristic, 4.5 kA breaking capacity per EN 60898, 3P+N, 400 V AC. Available to order; confirm current pri","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"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":"4","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 5SJ3","Energy limiting class":"3","Number of width units":"4","Number of poles / Note":"3P+N","circuit-breaker / Design":"5SJ3","Current / at AC / rated value":"20 A","Tripping characteristic class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"4.5 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"4.5 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=122619&mlfb=5SJ3620-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ3620-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SJ3620-7 and what is the lead time?","answer":"The 5SJ3620-7 is sourced to order against an RFQ through independent distribution. Current pricing and lead time are confirmed at quote time — submit an RFQ for your quantity and delivery window."},{"question":"What is the closest functional alternative to the 5SJ3620-7?","answer":"The closest functional peer is the 5SJ6220-6, which is also a 20 A SENTRON MCB but with a B-curve (3–5× In) instead of C-curve, and a 6 kA breaking capacity versus 4.5 kA. The 5SJ6220-6 is a 2-pole device, not 3P+N, so it will not drop into a panel wired for 3P+N without rewiring the neutral and phase arrangement."},{"question":"What compliance documentation is available for the 5SJ3620-7?","answer":"The 5SJ3620-7 carries approvals per EN 60898 and IEC 60947-2, with a breaking capacity of 4.5 kA under both standards. It is halogen-free and silicon-free, and rated for overvoltage category 3. Standard Siemens SENTRON documentation includes CE declaration and manufacturer test certificates available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ3620-7","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/5SJ3620-7 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}}