{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4314-8HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4314-8HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4314-8HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4314-8HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4314-8HG42, miniature circuit breaker, 3-pole, D-curve, 0.3 A, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SJ4314-8HG42 is a 3-pole miniature circuit breaker with a D tripping characteristic, rated at 0.3 A and 400 V AC. ## Panel fit & integration Installation depth is 70 mm. IP20 with conductors connected, IP40 in the handle range — fine for enclosed panels; keep the gland plate sealed if washdown is nearby. Terminal torque spec: 3.5 Nm for Cu conductors rated 60/75 °C. Both are rated for 400 V AC, and the D-curve's magnetic trip threshold (10–20× In) handles motor inrush without dropping the line.","metaTitle":"Siemens SENTRON 5SJ4314-8HG42 MCB, 3P D 0.3A 10kA","metaDescription":"Siemens SENTRON 5SJ4314-8HG42 miniature circuit breaker, 3-pole, D-curve, 0.3 A, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC. Active production, sourced to order. Request quot","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":"5SJ4314-8HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","description":"Circuit breaker 10kA, 3-pole, D, 0.3 A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"on standard mounting rail","Number of poles":"3","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product designation":"Miniature circuit breakers","Protection class IP":"IP20, with connected conductors, IP 40 in the handle range","Overvoltage category":"3","Tunnel terminals top":"No","Vibration resistance":"50 m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)","Combined Terminal Top":"Yes","Design of the product":"Miniature circuit-breaker 5SJ4","Number of width units":"3","Number of poles / Note":"3P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Product function / Note":"Terminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in","Tunnel terminals bottom":"No","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SJ4","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"0.3 A","Tripping characteristic class":"D","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Installation environment regarding EMC":"Suitable for environment B (immunity to interference not applicable)","Influence of the surrounding temperature":"max. 95% humidity","Insulation voltage / at AC / rated value":"440 V","Vibration resistance / acc. to IEC 60068-2-6":"50 m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)","Product function / neutral conductor switching":"No","Mechanical service life (switching cycles) / typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7d7ba8971eb04b73f013bb99d01bdc80.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=133635&mlfb=5SJ4314-8HG42"},"ai":{"faq":[{"question":"Where can I buy 5SJ4314-8HG42 and 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 and we'll get you a firm number."},{"question":"What is the breaking capacity of 5SJ4314-8HG42?","answer":"It is rated 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC, giving you two certified fault-interruption levels depending on the standard your panel must meet."},{"question":"What compliance documentation does Siemens provide for 5SJ4314-8HG42?","answer":"The part is designed to EN 60898 and IEC 60947-2, carries an overvoltage category of 3, and is halogen-free and silicon-free. Specific RoHS/REACH/UL declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4314-8HG42","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/5SJ4314-8HG42 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}}