{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4306-8HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4306-8HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4306-8HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4306-8HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker, 5SJ4306-8HG42, D tripping characteristic, 3-pole, 6 A, 3 MWU width.","salesMarkdown":"## Footprint vs a higher-rated sibling The 5SJ4306-8HG42: If you're looking at the 5SJ4325-8HG42 (25 A version), the physical dimensions are identical: 70 mm depth, 54 mm width, 121 mm height, same 3 MWU. It will drop into the same DIN-rail space and terminal layout. Electrically, no – this is a 6 A D-curve, not a 25 A. For a 6 A circuit you want the 5SJ4306; the 5SJ4325 is for a higher-current branch. Same frame, different rating. ## Mounting & wiring notes Degree of pollution 3, overvoltage category III – typical for fixed installations. Vibration rated 50 m/s² at 25–150 Hz and 60 m/s² at 35 Hz. Sealed and halogen/silicon-free – useful for clean-room or SIL-rated builds if the specs require. Touch protection is built in; no extra shrouds needed for the front.","metaTitle":"Siemens 5SJ4306-8HG42 SENTRON MCB, D-curve, 6A, 3-pole","metaDescription":"Siemens SENTRON 5SJ4306-8HG42 miniature circuit breaker, D tripping characteristic, 6 A, 3-pole, active lifecycle. Rated from -40 to 75 °C, 3 MWU width. Sourced to order.","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":"5SJ4306-8HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 3-pole, D, 6A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","at AC / rated value":"6 A","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","according to EN 61346-2":"F","at 30 °C / rated value":"6 A","at 40 °C / rated value":"6 A","at 45 °C / rated value":"5.8 A","at 50 °C / rated value":"5.7 A","at 55 °C / rated value":"5.6 A","at 60 °C / rated value":"5.4 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","at DC / rated value / maximum":"60 V","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","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)","Type Of Voltage / Of The Operating Voltage":"AC/DC","insulation voltage (Ui) / at AC / rated value":"440 V","Product Component / Neutral Conductor Switching":"No","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$137.16 – $327.81","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7b1b0681239b81194f1b43e46b8e30a5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=236125&mlfb=5SJ4306-8HG42"},"ai":{"faq":[{"question":"What are the key dimensions of the 5SJ4306-8HG42?","answer":"Depth 70 mm, width 54 mm, height 121 mm. Occupies 3 modular units on a DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4306-8HG42","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/5SJ4306-8HG42 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}}