{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4103-7XX02","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4103-7XX02","canonicalUrl":"https://aoctrl.com/siemens/5SY4103-7XX02","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4103-7XX02","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4103-7XX02, 1-pole miniature circuit breaker, C-curve 3 A, 10 kA (EN 60898) / 35 kA (IEC 60947-2), 27 mm wide, IP20.","salesMarkdown":"It clears faults at 10 kA per EN 60898 and 35 kA per IEC 60947-2, with a UL 1077 / CSA C22.2 No. 235 interrupting capacity of 5 kA. The single-pole format (1P) fits a 27 mm wide module on a DIN rail, one width unit per EN 60715. ## Sizing and selectivity for the panel builder The 5SY4103-7XX02 accepts conductors from 0.75 mm² up to 35 mm² solid or stranded, with a tightening torque of 2.5–3.5 N·m on the screw terminals. That wire range covers everything from 1.5 mm² final subcircuits up to 10 mm² incoming tails — useful when the MCB is the first device after a meter or sub-distribution board. Rated for AC only (type of voltage: AC) with a maximum DC voltage of 72 V. The product carries approvals per EN 60898, IEC 60947-2, and UL 1077 / CSA C22.2 No. 235 — covering European, international, and North American acceptance. Sealable for tamper-proof installations.","metaTitle":"Siemens 5SY4103-7XX02 SENTRON MCB, 1P C 3A, 10 kA","metaDescription":"Siemens 5SY4103-7XX02 SENTRON miniature circuit breaker, 1-pole, C-curve, 3 A, 10 kA per EN 60898. Active production. Sourced to order against RFQ.","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":"27 mm","title":"5SY4103-7XX02","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Circuit breaker 230/400V, 10kA, 1-pole, C, 3 A with auxiliary current switch 1 NO + 1 NC","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 ... +45 °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","Design of the product":"With auxiliary switch 1 NO+1 NC","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1P","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"3 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"35 kA","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","AWG number / as coded connectable conductor cross section":"18 ... 4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3e87b0fcd4aec08d6e242ece923e28ce.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=412637&mlfb=5SY4103-7XX02"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY4103-7XX02?","answer":"Submit an RFQ with your target quantity. We confirm availability and current pricing at quote time through our independent distribution channels — no stock figures or lead-time numbers on this page."},{"question":"What is the closest functional second-source to 5SY4103-7XX02?","answer":"The 5SY4101-7CV is a direct peer in the same SENTRON 5SY series, also 1-pole C-curve but rated 1 A instead of 3 A. The 5SY4103-7XX02 drops into the same DIN-rail footprint (27 mm width, same depth) without rewiring — the only difference is the current rating and the corresponding breaking capacity values. If your load draws 3 A, stick with the 5SY4103-7XX02; the 1 A version will trip on inrush for a 3 A circuit."},{"question":"What is the depth of 5SY4103-7XX02?","answer":"76 mm overall depth, with an installation depth of 70 mm. That fits a standard 80 mm deep enclosure without the back wall interfering with wiring."},{"question":"What wire sizes does 5SY4103-7XX02 accept?","answer":"Solid or stranded conductors from 0.75 mm² up to 35 mm², terminated with a screw torque of 2.5–3.5 N·m. The combined top/bottom terminals accept feed from either direction."},{"question":"Will 5SY4103-7XX02 drop into a panel specified around 5SY4101-7CV without rewiring?","answer":"Yes — same 27 mm width, same 76 mm depth, same DIN-rail mounting. The only change is the current rating: 3 A vs 1 A. No rewiring needed if the conductor sizing already supports 3 A. Verify the downstream load doesn't exceed 3 A continuous."},{"question":"What compliance documentation does Siemens provide for 5SY4103-7XX02?","answer":"The MCB is rated per EN 60898 (10 kA), IEC 60947-2 (35 kA), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE, UKCA) and REACH/RoHS statements are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4103-7XX02","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/5SY4103-7XX02 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}}