{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6104-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6104-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ6104-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6104-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 series, miniature circuit breaker, 1-pole, C-curve, 4 A, 6 kA, 240 V AC / 60 V DC.","salesMarkdown":"The Siemens SENTRON 5SJ6104-7 is a 1-pole miniature circuit breaker rated 4 A with a C-curve tripping characteristic, meaning it holds transient inrush up to 5–10× rated current before tripping magnetically — the standard choice for motor-starter and small-transformer branch circuits where the load draw is under 4 A but startup surge hits higher. Rated 240 V AC for single-phase operation and 60 V DC maximum, so it covers standard North American split-phase panels and DC control circuits up to 60 V. The AC insulation voltage is 440 V, giving headroom on 277/480 V systems if used in a line-to-neutral configuration within the 240 V per-pole limit. Snap-on DIN-rail mount, 1 width unit (18 mm), installs in any orientation. ## Temperature range and environmental fit The -40 °C minimum means no wax-thickening issues on the bimetal in freezer applications. Halogen-free and silicon-free construction — no corrosive off-gassing in a fire, and no silicone outgassing that could foul relay contacts or optical sensors in the same enclosure. Sealable (padlockable toggle) per, so a lockout/tagout procedure can physically lock the breaker off — required on some safety circuits and maintenance lockout points. ## Coordination and compliance notes Energy limiting class 3 means it restricts let-through energy well, helping with downstream device protection. Mechanical endurance rated 20 000 switching cycles — typical for a distribution MCB; not a frequent-switching device but fine for occasional manual isolation and fault clearing. Vibration resistance tested to IEC 60068-2-6 at 50 m/s² from 25 to 150 Hz and 60 m/s² from 10 to 150 Hz — holds up in panels mounted on pumps, compressors, or conveyor drives without nuisance tripping from vibration.","metaTitle":"Siemens SENTRON 5SJ6104-7 MCB, 1-Pole C 4A 6kA","metaDescription":"Siemens SENTRON 5SJ6104-7 miniature circuit breaker, 1-pole, C-curve, 4 A rated, 6 kA breaking capacity per EN 60898, 240 V AC / 60 V DC. IP20, halogen-free, -40 to 75 °C. Sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Number of poles":"1","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Degree of pollution":"2","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":"1","Number of poles / Note":"1","circuit-breaker / Design":"5SJ6","Tripping characteristic class":"C","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":"240 V","Operating current / at AC / rated value":"4 A","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=428446&mlfb=5SJ6104-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6104-7/alternatives.json"},"ai":{"faq":[{"question":"Will the 5SJ6104-7 drop into a panel specified around the 5SL4120-7CC?","answer":"Both are 1-pole C-curve SENTRON MCBs on the same DIN-rail footprint (1 width unit, 18 mm). The 5SL4120-7CC is a 20 A, 10 kA breaker with a 400 V AC rating, while the 5SJ6104-7 is a 4 A, 6 kA unit at 240 V AC. The panel cutout and busbar spacing are identical — no rewiring needed if the ampacity and SCCR requirements match your circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6104-7","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/5SJ6104-7 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}}