{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4310-8HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4310-8HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4310-8HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4310-8HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4310-8HG42, 3-pole miniature circuit breaker, D tripping characteristic, 10 kA per EN 60898, 15 kA per IEC 60947-2, 400 V AC / 60 V DC, 3 modular width units, DIN-rail mount.","salesMarkdown":"It's rated for 400 V AC and 60 V DC, with a breaking capacity of 10 kA per EN 60898 and 15 kA per IEC 60947-2. That dual rating means it's certified for both residential/commercial (EN 60898) and industrial (IEC 60947-2) installations — a useful overlap if your panel spec calls for the higher industrial standard. The D characteristic (10–20× In magnetic trip) is the right choice for loads with a high starting surge — think motor contactors, solenoid valves, or power supplies that pull several times their running current for a few cycles. A B-curve breaker would nuisance-trip on that inrush; a D-curve holds through it. In a panel with a high available fault current — say, close to a transformer — the 15 kA IEC rating is the one to spec against. ## Environmental and compliance specs Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 35 Hz for 4 seconds.","metaTitle":"Siemens 5SJ4310-8HG42 SENTRON MCB, 3P D-Curve, 10kA/15kA","metaDescription":"Siemens SENTRON 5SJ4310-8HG42 miniature circuit breaker. 3-pole, D tripping characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2). Active production, sourced to order. Request quo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"54 mm","title":"5SJ4310-8HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 3-pole, D, 10 A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","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 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","Product Function Note":"Terminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in","Tunnel Terminals Bottom":"No","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","at DC rated value maximum":"60 V","Neutral Conductor Switching":"No","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"10 kA","Ambient Temperature During Operation":"max. 95% humidity","Supply Voltage Frequency Rated Value":"50 Hz","according to IEC 60947-2 rated value":"15 kA","installation environment regarding EMC":"Suitable for environment B (immunity to interference not applicable)","insulation voltage (Ui) at AC rated value":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","vibration resistance according to IEC 60068-2-6":"±1 mm at 5 to 25 Hz; 50 m/s² at 25 to 150 Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","Tightening Torque With Screw-Type Terminals Maximum":"3.5 N·m","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":"$123.19","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6606ed8d9133bf585f4ba52be0cefe6d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=255015&mlfb=5SJ4310-8HG42"},"ai":{"faq":[{"question":"Where can I buy 5SJ4310-8HG42 and how do I get a price?","answer":"Sourced through independent industrial distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, no stock count or price listed here."},{"question":"What is 5SJ4310-8HG42's listed depth (70 mm) on this component line?","answer":"The installed depth is 70 mm, which is the dimension from the DIN rail to the front of the handle. Plan for that clearance behind the panel door."},{"question":"What is 5SJ4310-8HG42's listed width (54 mm) on this component line?","answer":"Width is 54 mm, which corresponds to 3 modular width units (each 18 mm) on a standard DIN-rail panel."},{"question":"Will 5SJ4310-8HG42 drop into a panel that was specified around 5SY4140-7 without rewiring?","answer":"The 5SJ4 series uses the same 3-module DIN-rail footprint and combined tunnel terminals as the 5SY4 series, so it fits the same physical space and accepts the same conductor sizes. Terminal torque spec is identical at 3.5 Nm. No rewiring needed for the connection points, but verify the D-curve and breaking capacity match your circuit requirements — the 5SY4140-7 may have different ratings."},{"question":"What compliance documentation does this brand provide for 5SJ4310-8HG42 (RoHS, REACH, UL, IEC)?","answer":"The part carries dual certification to EN 60898 (10 kA) and IEC 60947-2 (15 kA). It is halogen-free and silicon-free. Standard Siemens SENTRON documentation includes the declaration of conformity for these standards. RoHS and REACH compliance is typical for the SENTRON line; request the specific declaration from your distributor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4310-8HG42","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/5SJ4310-8HG42 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}}