{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6120-6RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6120-6RC","canonicalUrl":"https://aoctrl.com/siemens/5SL6120-6RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6120-6RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL6120-6RC, 20 A, 1-pole, B characteristic, 7.5 kA per EN 60898, 1 MW.","salesMarkdown":"The single modular width (18 mm) means it occupies one slot on a DIN rail — a direct swap into any panel laid out for 1-MW breakers. ## Temperature and derating Above 30 °C you'll need to derate per the thermal curve — a standard practice for any thermal-magnetic MCB. ## DC capability and voltage limits Rated for DC operation up to 72 V maximum — useful for small DC distribution panels or control circuits, but not for higher-voltage battery banks. On the AC side, single-phase is rated 250 V; multi-phase (line-to-line) is rated 440 V. No neutral conductor switching built in — this is a single-pole breaker that switches only the phase.","metaTitle":"Siemens SENTRON 5SL6120-6RC MCB 20 A 1-pole B 7.5 kA","metaDescription":"Siemens SENTRON 5SL6120-6RC miniature circuit breaker, 20 A, 1-pole, B characteristic, 7.5 kA breaking capacity per EN 60898. 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","title":"5SL6120-6RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"MCB 20 A 1-pole B characteristic 7.5 kA","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":"No","at 30 °C / rated value":"20 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"1","Tripping Characteristic Class":"B","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"7.5 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"415 V","Type Of Voltage / Of The Operating Voltage":"AC","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","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5562d13cec3f78d16b1ae750ea4f1d0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=88603&mlfb=5SL6120-6RC"},"ai":{"faq":[{"question":"Will 5SL6120-6RC drop into a panel specified for 5SL3116-6MB?","answer":"Yes, both are 1-pole SENTRON MCBs with the same 18 mm width, 76 mm depth, and DIN-rail footprint. The 5SL6120-6RC is rated 20 A with a 7.5 kA breaking capacity, while the 5SL3116-6MB is 16 A with a 4.5 kA breaking capacity — so the 5SL6120-6RC is a higher-current, higher-fault-rated drop-in if the circuit design allows."},{"question":"What is the width of 5SL6120-6RC?","answer":"18 mm, which is one modular width unit (1 MW) on a DIN rail."},{"question":"What compliance documentation does Siemens provide for 5SL6120-6RC?","answer":"The part carries EN 60898 certification for the 7.5 kA breaking capacity rating, and it's halogen-free and silicon-free. Standard Siemens declarations for RoHS and REACH are available on request."},{"question":"Where can I buy 5SL6120-6RC?","answer":"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":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6120-6RC","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/5SL6120-6RC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}