{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6140-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6140-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6140-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6140-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, 1-pole miniature circuit breaker, B-curve, 40 A rated current, 6 kA breaking capacity per EN 60898, 18 mm width, 76 mm depth.","salesMarkdown":"## Integrator note The Siemens SENTRON 5SY6140-6CC is a 1-pole miniature circuit breaker with a B-curve tripping characteristic, rated 40 A at 400 V AC. It breaks 6 kA per EN 60898 and 5 kA per UL 1077, so it handles standard branch-circuit fault levels in industrial panels without cascading upstream. The 18 mm width (1 width unit) fits standard DIN-rail enclosures; depth is 76 mm, with 70 mm installation depth behind the panel. Terminal range accepts 0.75 to 35 mm² solid or stranded — sized for the 40 A feed without a ferrule bottleneck. ## B-curve selectivity and coordination B-curve trips magnetically at 3 to 5 times rated current — 120 to 200 A instantaneous — so it clears short-circuit faults fast while riding through moderate inrush from resistive loads. Energy limiting class 3 means it restricts let-through energy enough to protect downstream wiring and loads within its 6 kA rating. Mounts via quick-assembly system (DIN rail) in any position. Ambient temperature range is -25 to +55 °C operating, with storage from -40 to +75 °C. Sealable terminals allow lockout/tagout compliance. Halogen-free and silicon-free construction reduces outgassing risk in sensitive environments.","metaTitle":"Siemens 5SY6140-6CC SENTRON MCB, 1P, B-Curve, 40 A, 6 kA","metaDescription":"Siemens 5SY6140-6CC SENTRON miniature circuit breaker, 1-pole, B-curve, 40 A rated, 6 kA breaking capacity per EN 60898. UL 1077 listed. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"18 mm","title":"5SY6140-6CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, B, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +55 °C","Mounting type":"Quick assembly system","Number of poles":"1","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":"1","Number of poles / Note":"1P","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":"40 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/da4eb3ca0e0e380b3b4722c3ad7ce8e0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=493396&mlfb=5SY6140-6CC"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SY6140-6CC?","answer":"The 5SY7140-8CC is a 1-pole SENTRON MCB with the same 40 A rating but a C-curve characteristic. It shares the same 18 mm width, 76 mm depth, and terminal range, so it drops into the same DIN-rail slot without rewiring — but the tripping curve differs (C-curve trips at 5–10× In vs B-curve at 3–5× In), so selectivity coordination must be rechecked."},{"question":"What compliance documentation does this brand provide for 5SY6140-6CC?","answer":"Siemens provides RoHS, REACH, UL 1077, CSA C22.2 No.235, and EN 60898 declarations for the SENTRON 5SY6 series. Copies are available on request with an RFQ."},{"question":"Where can I buy 5SY6140-6CC and what is the lead time?","answer":"The part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead-time estimate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6140-6CC","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/5SY6140-6CC 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}}