{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4211-8HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4211-8HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4211-8HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4211-8HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series miniature circuit breaker, 2-pole, 5 A AC rated, 36 mm width, 70 mm depth, DIN rail mount, IP20/IP40.","salesMarkdown":"The 5SJ4211-8HG42 is a 2-pole miniature circuit breaker from the Siemens SENTRON 5SJ4 series, rated 5 A at both 30 °C and 40 °C ambient. That 5 A holds through 40 °C; above that it derates to 4.9 A at 45 °C, 4.8 A at 50 °C, 4.6 A at 55 °C, and 4.5 A at 60 °C (–). It snaps onto standard mounting rail in any position. ## Deployment context This breaker is suited for mechanical engineering and industrial panel applications. The IP20 rating on the body (IP40 in the handle area) is standard for enclosed panels; not a washdown part.","metaTitle":"Siemens 5SJ4211-8HG42 SENTRON MCB, 2-Pole 5 A, 36 mm Wide","metaDescription":"Siemens 5SJ4211-8HG42 SENTRON miniature circuit breaker, 2-pole, 5 A rated at 40 °C, 70 mm depth, DIN rail mount. Active production, sourced to order. Request quote.","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":"5SJ4211-8HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 2-pole, D, 5 A according to UL 489-480Y/277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","at AC rated value":"5 A","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","at 30 °C rated value":"5 A","at 40 °C rated value":"5 A","at 45 °C rated value":"4.9 A","at 50 °C rated value":"4.8 A","at 55 °C rated value":"4.6 A","at 60 °C rated value":"4.5 A","Tunnel Terminals Bottom":"No","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","at DC rated value maximum":"60 V","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","supply voltage at AC rated value":"400 V","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)","Type Of Voltage Of The Operating Voltage":"AC/DC","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 (Switching 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":"2.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$105.41","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/35003406fe579580735a6da80df6e298.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=84123&mlfb=5SJ4211-8HG42"},"ai":{"faq":[{"question":"Where can I buy 5SJ4211-8HG42 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 position."},{"question":"What are the key dimensions of 5SJ4211-8HG42?","answer":"Width 36 mm (2 modular units), depth 70 mm, height 121 mm. Installation depth matches the body depth at 70 mm."},{"question":"Will 5SJ4211-8HG42 drop into a panel specified around 5SY4106-7CV?","answer":"Both are 2-pole, 36 mm wide DIN-rail MCBs from Siemens, so the mechanical footprint and mounting are the same. The 5SY series is a different thermal-magnetic curve family — verify the trip characteristic and interrupting rating for your specific coordination study before substituting."},{"question":"What compliance documentation does Siemens provide for this breaker?","answer":"The product is designed to EN 61346-2 and IEC 81346-2 function designations. It carries the SENTRON brand and is classified as a miniature circuit breaker per the manufacturer. For specific RoHS, REACH, or UL documentation, request the current manufacturer declarations at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4211-8HG42","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/5SJ4211-8HG42 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}}