{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6420-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6420-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL6420-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6420-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6420-7RC, miniature circuit breaker, 20 A, 4-pole, C characteristic, 7.5 kA breaking capacity per EN 60898.","salesMarkdown":"At 20 A, that's a magnetic trip threshold between 100 A and 200 A instantaneous. Rated for multi-phase operation up to 440 V AC maximum, and single-phase at 250 V AC. DC rating is 72 V maximum — usable on DC control circuits but only at that voltage ceiling. Touch protection is integrated. Overvoltage category III and degree of pollution 2 — standard for fixed-installation distribution boards inside buildings. The closest functional peer is the 5SL4363-7 — same SENTRON series, same C-curve, same 20 A rating, same 7.5 kA breaking capacity per EN 60898, same 72 V DC max, same mechanical endurance. The critical difference is pole count: the 5SL6420-7RC is 4-pole (4P) at 72 mm wide (4 MW), while the 5SL4363-7 is 3-pole (3P) at 54 mm wide (3 MW). If your panel was laid out for a 3-pole breaker, the 4-pole version will not drop in without rewiring and a wider DIN slot. The 4-pole is the correct choice when the neutral must be switched or when the circuit requires four protected poles (three phases plus neutral).","metaTitle":"Siemens 5SL6420-7RC SENTRON MCB 20A 4P C-Curve 7.5kA","metaDescription":"Siemens 5SL6420-7RC SENTRON miniature circuit breaker, 20 A, 4-pole, C characteristic, 7.5 kA breaking capacity per EN 60898. Active production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","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":"4","Tripping Characteristic Class":"C","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f89338303db62cb8c7aaf733803ebb7d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=382841&mlfb=5SL6420-7RC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6420-7RC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SL6420-7RC?","answer":"The 5SL6420-7RC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of the 5SL6420-7RC?","answer":"The breaking capacity is 7.5 kA at 415 V AC per EN 60898, suitable for residential and light commercial fault levels."},{"question":"Will the 5SL6420-7RC fit a panel designed for the 5SL4363-7?","answer":"No, not without changes. The 5SL6420-7RC is 4-pole at 72 mm wide (4 MW), while the 5SL4363-7 is 3-pole at 54 mm wide (3 MW). The panel would need a wider DIN slot and rewiring to accommodate the extra pole."},{"question":"What compliance documentation is available for the 5SL6420-7RC?","answer":"The breaker carries Siemens standard compliance documentation including CE marking per the Low Voltage Directive. Specific certificates (UL, CSA, IEC) should be confirmed at order time against your jurisdiction's requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6420-7RC","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/5SL6420-7RC 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}}