{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4420-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4420-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4420-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4420-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4420-7RC, miniature circuit breaker, 4-pole, C characteristic, 20 A rated current, 10 kA breaking capacity at 415 V AC.","salesMarkdown":"The Siemens 5SL4420-7RC is a SENTRON miniature circuit breaker (MCB) with four poles, C-curve tripping characteristic, and a 20 A rated current. It interrupts fault currents up to 10 kA at 415 V AC per EN 60898, making it a standard choice for final subcircuit protection in residential and light commercial distribution boards. The 4-pole configuration switches all three phases plus neutral, though the neutral pole is not switched internally — it remains solidly connected. ## What the ratings mean for fit The C-curve means the magnetic trip threshold is 5–10× rated current — suitable for loads with moderate inrush like small motors, lighting banks, and general-purpose circuits where you want to avoid nuisance trips from startup current. The 20 A rating at 30 °C ambient sets the continuous load limit; derate for higher panel temperatures. The 10 kA breaking capacity is the maximum prospective fault current the breaker can safely clear at its rated voltage — sufficient for most residential and light commercial service entrances where the utility transformer impedance keeps fault levels below that. The 415 V AC rated voltage matches standard three-phase distribution voltages across much of Europe and Asia; the breaker also carries a 440 V maximum for multi-phase operation and a 250 V single-phase rating. ## Panel integration and mounting Snap-on mounting to 35 mm DIN rail per EN 60715. The 18 mm width occupies one modular unit, so a 4-pole breaker takes four modules of rail space. Depth is 76 mm, installation depth 70 mm — fits standard distribution board enclosures. IP20 protection with connected conductors means it's touch-safe for panel interiors but not rated for wet or dusty environments. Mount in any position, which simplifies layout in tight enclosures. Pollution degree 2 and overvoltage category III suit fixed-installation mains distribution. Halogen-free and silicon-free construction — relevant for installations where off-gassing during a fault event must not corrode nearby contacts or sensitive electronics. Sealable means the breaker can be locked in the OFF position for lockout/tagout. Mechanical service life is 10,000 switching cycles typical, which is standard for an MCB used for overcurrent protection rather than frequent switching duty. Temperature range spans -40 °C to 75 °C, covering unheated utility rooms and outdoor enclosures in most climates.","metaTitle":"Siemens 5SL4420-7RC SENTRON MCB, 4P C 20A 10kA","metaDescription":"Siemens SENTRON 5SL4420-7RC miniature circuit breaker, 4-pole, C-curve, 20 A rated, 10 kA breaking capacity per EN 60898, 415 V AC. Active production, available to order. Request q","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL4420-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 415 V 10kA, 4-pole, C, 20 A","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":"3","at 30 °C / rated value":"20 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":"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/19f7954568f4871c49fd8b52956e6629.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=142583&mlfb=5SL4420-7RC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SL4420-7RC?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; pricing and lead time are confirmed at quote time based on current market conditions."},{"question":"What is the depth of 5SL4420-7RC?","answer":"The overall depth is 76 mm, with an installation depth of 70 mm into the enclosure. This is standard for SENTRON 5SL series MCBs and fits typical distribution board back panels."},{"question":"What compliance documentation does Siemens provide for 5SL4420-7RC?","answer":"The breaker is designed and tested per EN 60898 for breaking capacity and IEC 60947-2 for performance. It carries CE marking for the European market. For specific documentation like RoHS, REACH, or UL declarations, request them with your RFQ — Siemens provides these on request for current-production items."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4420-7RC","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/5SL4420-7RC 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}}