{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4310-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4310-6","canonicalUrl":"https://aoctrl.com/siemens/5SY4310-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4310-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4310-6, 3-pole miniature circuit breaker, B tripping characteristic, 10 kA (EN 60898-1) / 20 kA (IEC 60947-2) breaking capacity, 400 V AC, IP20.","salesMarkdown":"## Siemens 5SY4310-6 — 3-pole B-curve MCB for panel and machine builds It carries a 10 kA breaking capacity per EN 60898-1 and a 20 kA rating per IEC 60947-2, with a DC breaking capacity of 15 kA at 60 V per IEC 60947-2. It mounts in any position and accepts supply from either end — top or bottom feed — which simplifies busbar routing in dense panels. The IP20 rating applies with conductors connected; the housing is sealable for tamper-proofing in field installations. ## Breaking capacity and dual-standard compliance This MCB is certified to IEC / EN 60898-1 (10 kA) and IEC / EN 60947-2 (20 kA), plus UL 1077 / CSA C22.2 No.235 (5 kA). The dual rating means it qualifies as a circuit breaker for branch-circuit protection under IEC 60947-2 in industrial installations, while also meeting the residential and commercial standard EN 60898-1. The UL 1077 listing covers supplementary protection in North American panels — not primary branch-circuit protection per UL 489, so verify the application before specifying for US code-bound jobs. The DC rating of 15 kA at 60 V (72 V max) covers battery-bank and DC-bus protection in UPS or solar combiner applications. ## Environmental range and derating The 5SY4310-6 operates from -40 °C to 75 °C, with a derating curve tied to relative humidity: max 95% RH up to 55 °C, dropping to 55% RH at 70 °C and 35% RH at 75 °C. In a sealed, non-ventilated enclosure near a heat source (drive, transformer), the internal temperature can exceed the ambient derating threshold — plan for forced ventilation or a higher-rated frame if the panel runs hot and humid.","metaTitle":"Siemens 5SY4310-6 SENTRON MCB, 3P B-Curve, 10 kA IEC, 20 kA","metaDescription":"Siemens 5SY4310-6 SENTRON 3-pole miniature circuit breaker, B-curve, 10 kA (EN 60898) / 20 kA (IEC 60947-2) breaking capacity. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4310-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 10kA, 3-pole, B, 10A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"B","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"20 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$26.67","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3141f163324aec5495202ceff8ec5584.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=436284&mlfb=5SY4310-6"},"ai":{"faq":[{"question":"Where can I buy the 5SY4310-6 and get a price?","answer":"The 5SY4310-6 is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What is the breaking capacity of the 5SY4310-6?","answer":"10 kA per EN 60898-1, 20 kA per IEC 60947-2 at 400 V AC, and 15 kA at 60 V DC per IEC 60947-2. UL 1077 rating is 5 kA."},{"question":"What compliance documentation does the 5SY4310-6 carry?","answer":"It is certified to IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077 / CSA C22.2 No.235. The housing is halogen-free and silicon-free."},{"question":"Will the 5SY4310-6 drop into a panel specified for the 5SY4304-7CV?","answer":"Both are 3-pole SENTRON MCBs on a 54 mm footprint with the same DIN-rail mounting and terminal layout, so mechanical fit is identical. The difference is the tripping curve — the 5SY4310-6 is B-curve, while the 5SY4304-7CV is C-curve. Verify the load's inrush characteristic before swapping; a B-curve may nuisance-trip on motor or transformer loads that a C-curve would handle."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4310-6","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/5SY4310-6 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}}