{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY3115-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY3115-7","canonicalUrl":"https://aoctrl.com/siemens/5SY3115-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY3115-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY3 series, miniature circuit breaker (MCB), order code 5SY3115-7, 1-pole, 1.6 A rated current, C tripping characteristic, 4.5 kA breaking capacity per EN 60898, 400 V AC rated voltage.","salesMarkdown":"## What this 1.6 A C-curve MCB does on your panel The Siemens 5SY3115-7 is a 1-pole SENTRON miniature circuit breaker rated at 1.6 A with a C tripping characteristic, meaning it's designed for moderate inrush loads like small motor starters, contactor coils, or control transformers where the startup surge is 5-10x the rated current. It breaks fault currents up to 4.5 kA per EN 60898 or 6 kA per IEC 60947-2 at 400 V AC — enough for most sub-distribution boards in commercial or light industrial panels. The 18 mm width (1 width unit) snaps onto a DIN rail via the quick-assembly system, and the combined top/bottom terminals accept solid or stranded conductors from 0.75 to 35 mm², so you can loop a feed-through without extra junction blocks. ## Selectivity and coordination — where this C-curve sits The C-curve trips magnetically between 5 and 10 times rated current, so at 1.6 A that's an instantaneous magnetic trip between 8 A and 16 A. That's higher than a B-curve (3-5x) but lower than a D-curve (10-20x), making this the right choice for circuits with moderate inrush — think a small contactor bank or a 24 VDC power supply. The 4.5 kA breaking capacity per EN 60898 governs the fault level the breaker can safely interrupt under that standard; the 6 kA per IEC 60947-2 applies when the breaker is used in industrial applications where the higher standard's testing criteria are required. ## Mounting and wiring — fits standard 18 mm DIN-rail slot The 18 mm width occupies exactly one 18 mm slot in a distribution board.","metaTitle":"Siemens 5SY3115-7 SENTRON MCB, 1.6 A C-Curve, 1P, 4.5 kA","metaDescription":"Siemens 5SY3115-7 SENTRON miniature circuit breaker, 1.6 A rated current, C tripping characteristic, 1-pole, 4.5 kA breaking capacity per EN 60898. Current lifecycle stage, availab","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","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","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","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":"5SY3","Current / at AC / rated value":"1.6 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"4.5 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"6 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 DC / acc. to IEC 60947-2 / rated value":"15 kA","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":"250 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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=480166&mlfb=5SY3115-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY3115-7/alternatives.json"},"ai":{"faq":[{"question":"What is 5SY3115-7's listed solid conductor range?","answer":"The solid conductor cross-section range is 0.75 to 35 mm². Stranded conductors also accept 0.75 to 35 mm². The combined terminal handles both types without ferrules."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY3115-7","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/5SY3115-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}