{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4120-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4120-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SL4120-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4120-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4120-7CC, 1-pole miniature circuit breaker, C-curve, 20 A rated, 10 kA breaking capacity per EN 60898, 400 V AC, 1 MWU wide.","salesMarkdown":"The Siemens SENTRON 5SL4120-7CC is a 1-pole miniature circuit breaker with C-curve tripping, rated 20 A at 30 °C and 400 V AC. ## Temperature derating and real-world current At 40 °C the breaker must be derated to 18.48 A; at 50 °C to 16.82 A; at 55 °C to 15.92 A. For a cold-storage or freezer panel where ambient stays near -40 °C, the breaker runs cold and stays cold — no derating penalty, and the C-curve magnetic trip remains crisp. Mounting position is unrestricted. The sealable design allows lockout-tagout compliance. Halogen-free and silicon-free construction meets clean-room and food-processing material restrictions.","metaTitle":"Siemens 5SL4120-7CC SENTRON MCB, 1P C-20 A, 10 kA","metaDescription":"Siemens SENTRON 5SL4120-7CC miniature circuit breaker, 1-pole, C-curve, 20 A, 10 kA per EN 60898, 400 V AC. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"20 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.48 A","at 45 °C / rated value":"17.67 A","at 50 °C / rated value":"16.82 A","at 55 °C / rated value":"15.92 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Type Of Voltage / Of The Operating Voltage":"AC","vibration resistance / acc. to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"250 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/969d2a03ff948cc8b48940093bb94601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=235614&mlfb=5SL4120-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4120-7CC/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4120-7CC?","answer":"10 kA per EN 60898 at 400 V AC, which covers most residential and light-commercial branch-circuit fault levels."},{"question":"What temperature range does 5SL4120-7CC handle?","answer":"Ambient operating range from -40 °C to 75 °C, with derating above 30 °C as listed in the spec table."},{"question":"Where can I buy 5SL4120-7CC?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"Will 5SL4120-7CC drop into a panel specified around 5SL4106-7CC without rewiring?","answer":"Yes — both are 1-pole SENTRON 5SL4 breakers with the same 18 mm width, DIN-rail mounting, and terminal layout. The only difference is the current rating: 20 A vs 6 A. No rewiring needed if the circuit is rated for 20 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4120-7CC","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/5SL4120-7CC 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}}