{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6420-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6420-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6420-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6420-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker, 4-pole, B tripping characteristic, 20 A rated current, 6 kA breaking capacity per IEC 60898, 400 V AC.","salesMarkdown":"It provides 6 kA breaking capacity per IEC 60898 and 5 kA per UL 1077 / CSA C22.2 No. 235, making it suitable for protecting branch circuits in industrial control panels and mechanical engineering applications. The 6 kA breaking capacity at 400 V AC (IEC 60898) covers most industrial distribution panels; the 5 kA rating under UL 1077 means it also satisfies North American supplementary-protection requirements. Wire range accepts 0.75 to 35 mm² solid or stranded, with a tightening torque of 2.5 to 3.5 N·m on the screw terminals. The 4-pole (4P) format occupies 4 width units (72 mm) on the DIN rail, with a depth of 76 mm and an installation depth of 70 mm. ## Deployment context The halogen-free and silicon-free construction is relevant for environments where outgassing must be minimized — clean rooms, food processing, or marine applications.","metaTitle":"Siemens 5SY6420-6CC SENTRON MCB, 4P B-Char 20A, 6kA IEC","metaDescription":"Siemens 5SY6420-6CC SENTRON miniature circuit breaker, 4-pole, B-curve, 20 A rated, 6 kA breaking capacity per IEC 60898, 400 V AC. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","title":"5SY6420-6CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 6kA, 4-pole, B, 20A","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +55 °C","Mounting type":"Quick assembly system","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +75 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Energy limiting class":"3","Number of width units":"4","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY6CC","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"20 A","Tripping characteristic class":"B","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8778bff935b42db3365f50e5de3bcfc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=345449&mlfb=5SY6420-6CC"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for the 5SY6420-6CC?","answer":"The MCB carries IEC 60898 (6 kA) and UL 1077 / CSA C22.2 No. 235 (5 kA) certifications. It is halogen-free and silicon-free. Standard Siemens declarations for RoHS and REACH are available on request."},{"question":"Where can I buy the 5SY6420-6CC and how is it quoted?","answer":"The 5SY6420-6CC is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your required quantity and delivery schedule."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6420-6CC","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/5SY6420-6CC 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}}