{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6620-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6620-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6620-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6620-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6620-7CC miniature circuit breaker, 4-pole (3P+N), C tripping characteristic, 20 A rated current, 6 kA breaking capacity at 400 V AC per EN 60898, 5 kA per UL 1077.","salesMarkdown":"The Siemens 5SY6620-7CC is a 4-pole (3P+N) miniature circuit breaker from the SENTRON 5SY6CC series, rated 20 A with a C tripping curve. The 6 kA breaking capacity at 400 V AC (per EN 60898) tells you it can safely interrupt a fault current up to 6,000 A without welding contacts or cascading upstream; the 5 kA rating under UL 1077 covers North American panel applications. At 20 A and 400 V, this breaker handles branch circuits feeding a handful of motor starters or a lighting subpanel, not a main feed. Mounting is snap-on DIN rail (quick assembly system per the spec), and the 72 mm width (4 width units) fits standard enclosure cutouts. The 76 mm depth leaves clearance behind the rail for wiring — no tight squeeze on a 100 mm deep enclosure. Terminal capacity accepts solid or stranded conductors from 0.75 to 35 mm², so you can land a 6 mm² feed and daisy-chain 2.5 mm² branch tails without adapters. Installation depth is 70 mm from the DIN rail face; the overall 76 mm depth includes the actuator and terminal overhang. Mounting position is any — horizontal, vertical, or upside-down — so you can orient the breaker to match the busbar or cable entry without derating. The combined terminal (top and bottom) accepts screw-type terminations with a tightening torque of 2.5 to 3.5 N·m, which is typical for 35 mm² lugs. Sealable (yes) means you can lock the toggle with a padlock for lockout/tagout. Ambient temperature range -25 to +55 °C covers most indoor industrial enclosures; storage range -40 to +75 °C is wider for warehouse cycling. The humidity spec (max 95% at 55 °C, derating at higher temps) is typical for unsealed enclosures — no special coating needed for normal plant floor conditions.","metaTitle":"Siemens 5SY6620-7CC SENTRON MCB, 4P C-Curve 20 A, 6 kA","metaDescription":"Siemens 5SY6620-7CC SENTRON miniature circuit breaker, 4-pole C-curve 20 A, 6 kA IEC breaking capacity, 400 V AC. Current lifecycle stage, available to order. Request a quote.","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":"5SY6620-7CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 6kA, 3+N-pole, C, 20A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °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":"3P+N","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":"C","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":"Yes","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/7620c0a617fb7089e99d995f786e569f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=40209&mlfb=5SY6620-7CC"},"ai":{"faq":[{"question":"Where can I buy 5SY6620-7CC?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 5SY6620-7CC?","answer":"6 kA at 400 V AC per EN 60898, and 5 kA per UL 1077 / CSA C22.2 No.235."},{"question":"What conductor sizes does 5SY6620-7CC accept?","answer":"Solid and stranded conductors from 0.75 to 35 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6620-7CC","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/5SY6620-7CC 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}}