{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4420-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4420-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4420-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4420-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4420-6, 4-pole miniature circuit breaker, B-curve, 20 A rated at 30 °C, 10 kA breaking capacity per EN 60898 and IEC 60947-2, 400 V AC, 4 MW width.","salesMarkdown":"The Siemens 5SL4420-6 is a 4-pole miniature circuit breaker from the SENTRON family, with a B tripping characteristic rated 20 A at 30 °C (18.94 A at 40 °C, 17.24 A at 55 °C). It breaks fault currents up to 10 kA per both EN 60898 and IEC 60947-2 at 400 V AC, and carries a maximum 440 V AC in multi-phase operation. The 4 MW (72 mm) width and 76 mm depth mean it occupies four standard 18 mm DIN-rail slots — a common footprint for a 4P residential or light-commercial distribution board. With a mechanical service life of 10 000 operating cycles and an IP20 rating (with connected conductors), this is a standard panelboard MCB for residential buildings and infrastructure, not a motor-protection or high-inrush device. The 70 mm installation depth (76 mm overall) clears most shallow gland plates. Degree of pollution 2 and overvoltage category III are standard for fixed-installation distribution boards. Touch protection is provided on the line-side terminals. Temperature derating is published: at 40 °C the rated current drops to 18.94 A, at 45 °C to 18.4 A, and at 55 °C to 17.24 A. The maximum operating temperature is 75 °C; minimum is -40 °C, which covers cold-chain and outdoor telecom shelters. The product function includes neutral conductor switching: no — this is a 4-pole breaker that switches all four poles, but the neutral is not switched separately (it is a 4P, not a 3P+N with a switched neutral).","metaTitle":"Siemens 5SL4420-6 SENTRON MCB, 4P B-20A 10kA 400V","metaDescription":"Siemens 5SL4420-6 SENTRON 4-pole miniature circuit breaker, B-curve 20 A, 10 kA breaking capacity per EN 60898 & IEC 60947-2, 400 V AC. Current production. Sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SL4420-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 4-pole, B, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","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","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.94 A","at 45 °C / rated value":"18.4 A","at 55 °C / rated value":"17.24 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"4","Tripping Characteristic Class":"B","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","acc. to IEC 60947-2 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Influence Of The Surrounding Temperature":"+55 °C, max. 95% humidity","with multi-phase operation / at AC / maximum":"440 V","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/19f7954568f4871c49fd8b52956e6629.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=396056&mlfb=5SL4420-6"},"ai":{"faq":[{"question":"Where can I buy 5SL4420-6 and what is the lead time?","answer":"The 5SL4420-6 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is 5SL4420-6's depth and width for panel planning?","answer":"The depth is 76 mm (70 mm installation depth) and the width is 72 mm — four standard 18 mm modular units on a DIN rail."},{"question":"What compliance documentation is available for 5SL4420-6?","answer":"The breaker is halogen-free and silicon-free, rated IP20 with connected conductors, and carries a degree of pollution 2 and overvoltage category III per IEC standards. It is designed for residential buildings and infrastructure per the manufacturer's suitability statement."},{"question":"Will 5SL4420-6 drop into a panel specified for 5SL6132-6MB?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, but the 5SL6132-6MB is a C-curve device while the 5SL4420-6 is a B-curve. If the panel was wired for a C-curve breaker, the 5SL4420-6 will physically fit and electrically connect, but the lower inrush tolerance of the B curve may cause nuisance tripping on loads with high starting currents."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4420-6","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/5SL4420-6 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}}