{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6105-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6105-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6105-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6105-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker, 1-pole D-curve 0.5 A, 6 kA (EN 60898), 5 kA (UL 1077), 400 V AC, 72 V DC max.","salesMarkdown":"The Siemens 5SY6105-8CC is a 1-pole miniature circuit breaker from the SENTRON 5SY6 series, rated 0.5 A with a D tripping characteristic. Breaking capacity is 6 kA per EN 60898 and 5 kA per UL 1077 / CSA C22.2 No.235, so it clears faults up to that level without cascading upstream. The 400 V AC rated voltage covers standard three-phase line-to-neutral applications; DC rating maxes at 72 V. Terminal accepts solid or stranded conductors from 0.75 to 35 mm²; tightening torque 2.5–3.5 N·m. Mounting position any, ambient temperature -25 to +55 °C, storage -40 to +75 °C. IP20 with conductors connected. Sealable cover and touch protection built in. The 5SY4140-7 is a 1-pole B-curve 40 A MCB — same SENTRON family, same 18 mm width and DIN-rail mount. The D-curve and 0.5 A rating on the 5SY6105-8CC make it a different animal: it's for low-current inductive loads (small contactor coils, relay banks, signal transformers) where the B-curve would trip on inrush. They share the terminal range (0.75–35 mm²) and IP20 rating, but the 5SY6105-8CC won't drop into a 40 A feeder slot without rewiring the branch. If you're replacing a 5SY4140-7 with this, check the load current first — 0.5 A won't carry a 40 A circuit. ## Approvals and compliance documentation Rated per EN 60898 (6 kA) and UL 1077 / CSA C22.2 No.235 (5 kA). Overvoltage category III. The part is halogen-free and silicon-free. Standard compliance documentation (CE, UKCA, RoHS, REACH) is available from Siemens; the datasheet covers the full declaration. No marine or ATEX approvals listed on this variant.","metaTitle":"Siemens 5SY6105-8CC SENTRON MCB, 1P D 0.5 A, 6 kA","metaDescription":"Siemens 5SY6105-8CC SENTRON miniature circuit breaker, 1-pole, D-curve, 0.5 A rated, 6 kA breaking capacity per EN 60898. UL/CSA rated 5 kA. Current lifecycle. Sourced to order aga","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":"5SY6105-8CC","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, D, 0.5 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"1","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","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":"0.5 A","Tripping characteristic class":"D","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/d280d3f26ae61afaf2a3b6363f74e22a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=431526&mlfb=5SY6105-8CC"},"ai":{"faq":[{"question":"Where can I buy 5SY6105-8CC and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the closest functional second-source to 5SY6105-8CC?","answer":"The 5SY4140-7 is a 1-pole B-curve 40 A MCB from the same SENTRON family, same 18 mm width and terminal range, but its 40 A rating and B-curve make it unsuitable as a direct drop-in for a 0.5 A D-curve circuit. No exact second-source exists; stick with the 5SY6105-8CC for the specified rating."},{"question":"What is 5SY6105-8CC's listed depth?","answer":"The depth is 76 mm."},{"question":"What is 5SY6105-8CC's listed solid conductor range?","answer":"Solid conductors from 0.75 to 35 mm²."},{"question":"Will 5SY6105-8CC drop into a panel specified around 5SY4140-7 without rewiring?","answer":"No — the 5SY6105-8CC is 0.5 A D-curve, while the 5SY4140-7 is 40 A B-curve. Same 18 mm width and DIN-rail mount, but the load circuit must be rewired for the lower current rating."},{"question":"What compliance documentation does Siemens provide for 5SY6105-8CC?","answer":"Standard CE, UKCA, RoHS, and REACH declarations are available. The datasheet includes the full compliance statement. No marine or ATEX approvals listed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6105-8CC","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/5SY6105-8CC 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}}