{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6315-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6315-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6315-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6315-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker (MCB), 3-pole, D tripping characteristic, 1.6 A rated current, 400 V AC, breaking capacity 6 kA per EN 60898 / 30 kA per IEC 60947-2.","salesMarkdown":"## Siemens 5SY6315-8 — SENTRON 3-Pole D-Curve MCB, 1.6 A The Siemens 5SY6315-8 is a 3-pole miniature circuit breaker from the SENTRON 5SY6 series, rated at 1.6 A with a D tripping characteristic. It is designed for 400 V AC systems and carries a breaking capacity of 6 kA per EN 60898 and 30 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No. 235. The 1.6 A rating and D curve make this MCB a fit for protecting a single small motor or a group of inductive loads where the starting surge exceeds 10× the full-load current. The 6 kA breaking capacity under EN 60898 covers standard residential and light commercial panel duty; the 30 kA rating under IEC 60947-2 means it can be used in industrial distribution where fault currents are higher — a key distinction for panel builders specifying for a 400 V industrial supply with a transformer upstream. The 3-pole configuration interrupts all three phases simultaneously, which is standard for three-phase motor circuits. The 72 V DC maximum rating (per IEC 60947-2) also allows limited DC branch protection, though the primary application is AC. The 5SY6315-8 carries approvals per EN 60898, IEC 60947-2, and UL 1077 / CSA C22.2 No. 235, covering the major regulatory jurisdictions for industrial control panels. The touch-protection feature (fingertip-safe terminals) is standard for modern DIN-rail components.","metaTitle":"Siemens 5SY6315-8 SENTRON MCB, 1.6 A, D Curve, 3P, 400 V","metaDescription":"Siemens 5SY6315-8 SENTRON miniature circuit breaker, 1.6 A rated current, D tripping characteristic, 3 poles, 400 V AC. Breaking capacity 6 kA (EN 60898) / 30 kA (IEC 60947-2). UL/","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"54 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":"3","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":"3","Number of poles / Note":"3P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY6","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"1.6 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","acc. to IEC 60947-2 / rated value":"30 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":"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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=288772&mlfb=5SY6315-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6315-8/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY6315-8?","answer":"6 kA per EN 60898 and 30 kA per IEC 60947-2 at 400 V AC. For DC circuits, it is rated 15 kA per IEC 60947-2 at 72 V DC. Under UL 1077 / CSA, the breaking capacity is 5 kA."},{"question":"Will the 5SY6315-8 drop into a panel specified for the 5SY7140-8CC?","answer":"No — the 5SY7140-8CC is a different rating (higher current, different curve) and is not a direct mechanical or electrical substitute. The 5SY6315-8 has the same 3-pole, 3-width-unit form factor and mounts on the same DIN rail, but the trip curve and current rating differ. Verify the circuit protection requirements before substituting."},{"question":"What compliance documentation is available for the 5SY6315-8?","answer":"The MCB is certified to EN 60898, IEC 60947-2, UL 1077, and CSA C22.2 No. 235. It is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE, UKCA) and the UL/CSA listing are available with the product documentation."},{"question":"Where can I buy the 5SY6315-8?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6315-8","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/5SY6315-8 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}}