{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4235-7HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4235-7HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4235-7HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4235-7HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, 2-pole miniature circuit breaker, 35 A rated, C characteristic, 2 MW, DIN rail mount.","salesMarkdown":"## 35 A C-Curve on Two Poles ## Thermal Derating and Ambient Range Rated current holds at 35 A up to 40 °C ambient, then derates linearly to 31.5 A at 60 °C. The breaker is sealable for lockout/tagout applications. IP20 with connected conductors, IP40 in the handle area — adequate for enclosed panels but not for wet-area mounting without a separate enclosure. Halogen-free and silicon-free construction suits environments where outgassing must be minimised, such as clean rooms or sealed enclosures near sensitive electronics.","metaTitle":"Siemens 5SJ4235-7HG42 SENTRON 2-Pole MCB, 35 A, C-Curve","metaDescription":"Siemens 5SJ4235-7HG42 SENTRON 2-pole MCB, 35 A rated current, C tripping characteristic, 2 modular width units, DIN-rail mount.","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":"5SJ4235-7HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 2-pole, C, 35A 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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","at AC / rated value":"35 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":"35 A","at 40 °C / rated value":"35 A","at 45 °C / rated value":"34 A","at 50 °C / rated value":"33.3 A","at 55 °C / rated value":"32.4 A","at 60 °C / rated value":"31.5 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","at DC / rated value / maximum":"60 V","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","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","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","insulation voltage (Ui) / at AC / rated value":"440 V","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$225.30","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8900e2d65808638eb77bef6f5f10ff7a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=456400&mlfb=5SJ4235-7HG42"},"ai":{"faq":[{"question":"Is the 5SJ4235-7HG42 suitable as a replacement for another 2-pole 35 A MCB?","answer":"As a standard 2-pole 35 A C-curve MCB on a 36 mm DIN-rail footprint, it is a functional replacement for any breaker meeting those same ratings and form factor. Confirm the breaking capacity and DC voltage rating (60 V max DC per pole) match your application requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4235-7HG42","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/5SJ4235-7HG42 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}}