{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6204-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6204-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ6204-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6204-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 series, miniature circuit breaker, 2-pole, C tripping characteristic, 4 A rated current, 400 V AC, 6 kA breaking capacity, 70 mm installation depth.","salesMarkdown":"## Siemens 5SJ6204-7 — 2-pole C-curve MCB for 400 V AC branch circuits The Siemens 5SJ6204-7 is a 2-pole miniature circuit breaker from the SENTRON 5SJ6 series, rated 4 A at 400 V AC with a C tripping characteristic. Rated 4 A at 400 V AC, this MCB protects a 2-pole branch circuit drawing up to 4 A continuous. The C characteristic means magnetic trip occurs at 5–10× In (20–40 A), so it holds through the starting surge of a small motor or a bank of fluorescent ballasts without nuisance tripping. Energy limiting class 3 means it lets through minimal let-through energy during a fault, which helps downstream components survive. The 2-pole configuration switches both poles simultaneously. The AC/DC voltage type means the arc chamber extinguishes arcs on both AC and DC. Terminals accept 1.5 mm² to 2.5 mm² conductors — the standard range for 4 A circuits. The 70 mm installation depth is shallower than many older breakers, which matters when the distribution board is mounted against a thin wall or in a tight enclosure. The mechanical service life of 20 000 switching cycles is typical for a residential-grade MCB; it will outlast the building's wiring but is not rated for frequent manual switching as a disconnect. Snap-on DIN rail mounting in any position — the manufacturer allows any mounting orientation. The 2 width units let it fit alongside other 5SJ6 breakers.","metaTitle":"Siemens 5SJ6204-7 MCB, 2-pole C-curve 4A 400V AC 6kA","metaDescription":"Siemens SENTRON 5SJ6204-7 miniature circuit breaker, 2-pole, C characteristic, 4 A rated current, 400 V AC, 6 kA breaking capacity. Current production lifecycle. Available to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Maximum":"2.5 mm²","Minimum":"1.5 mm²","Rated Value":"50 Hz","Number of poles":"2","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Degree of pollution":"2","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Energy limiting class":"3","Number of width units":"2","circuit-breaker / Design":"5SJ6","Tripping characteristic class":"C","Position / of power supply cord":"Any","Supply voltage / at AC / rated value":"400 V","Operating current / at AC / rated value":"4 A","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=8296&mlfb=5SJ6204-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6204-7/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6204-7","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/5SJ6204-7 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}}