{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4206-8HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4206-8HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4206-8HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4206-8HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker, 2-pole, D tripping characteristic, rated 6 A at 30/40 °C, 70 mm depth, 36 mm width, 121 mm height, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SJ4206-8HG42 is a 2-pole miniature circuit breaker with a D tripping characteristic, rated 6 A at both 30 °C and 40 °C ambient. At 45 °C the rating derates to 5.8 A, at 50 °C to 5.7 A, at 55 °C to 5.6 A, and at 60 °C to 5.4 A; if the panel runs hot, factor that in for continuous load. Depth is 70 mm, height 121 mm. The breaker is sealable, halogen-free, and silicon-free — relevant for environments where outgassing or contamination must be minimised (e.g., food processing, medical device manufacturing). Touch protection is built in. Vibration resistance is rated at 50 m/s² over 25 to 150 Hz and 60 m/s² at 35 Hz (4 seconds), so it holds up on machinery with moderate vibration. SENTRON miniature circuit breakers are specified in industrial control panels, distribution boards, and machinery — mechanical engineering and industry is the stated suitability. The D-curve and 6 A rating make it a fit for motor branch circuits, small transformer primaries, and other loads with a high inrush-to-running-current ratio. The 60 V DC maximum rating also allows use in some DC control circuits.","metaTitle":"Siemens SENTRON 5SJ4206-8HG42 MCB, 2-pole, D-curve, 6 A","metaDescription":"Siemens SENTRON 5SJ4206-8HG42 miniature circuit breaker, 2-pole, D tripping characteristic, rated 6 A at 30/40 °C, 70 mm deep, DIN rail mount. Active lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"36 mm","title":"5SJ4206-8HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 2-pole, D, 6A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","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":"2","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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/677bef7027e6ca4c7b7e79a0674bcb8b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=144463&mlfb=5SJ4206-8HG42"},"ai":{"faq":[{"question":"Where can I buy 5SJ4206-8HG42 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 for a firm number."},{"question":"What does the D tripping characteristic mean for this breaker?","answer":"The D-curve has a magnetic trip threshold of 10–20× In, so it handles high inrush currents from motors and transformers without nuisance tripping. At 6 A, that means the magnetic trip engages between 60 A and 120 A."},{"question":"What are the key dimensions of 5SJ4206-8HG42?","answer":"Width is 36 mm (2 modular units), depth is 70 mm, height is 121 mm. It mounts on a standard DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4206-8HG42","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/5SJ4206-8HG42 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}}