{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4115-8HG40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4115-8HG40","canonicalUrl":"https://aoctrl.com/siemens/5SJ4115-8HG40","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4115-8HG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 miniature circuit breaker, 1-pole, D characteristic, 1.6 A rated current, 18 mm wide, DIN rail mount, IP20.","salesMarkdown":"The Siemens 5SJ4115-8HG40 is a 1-pole miniature circuit breaker from the SENTRON 5SJ4 series, designed for branch-circuit overcurrent protection in industrial control panels and mechanical-engineering equipment. At 40 °C ambient it carries a full 1.6 A continuously; derate to 1.3 A at 60 °C if the panel runs hot. Snaps onto a standard DIN rail (35 mm) and occupies one modular width (18 mm), so it fits a standard 18 mm slot in a distribution board or enclosure. The combined terminal at top and bottom accepts copper conductors; tighten to 3.5 Nm. Mount in any position — no derating needed for orientation. IP20 with connected conductors (IP40 in the handle area) means it's protected against solid objects >12 mm but not against water ingress; install inside a sealed enclosure in wet areas. Vibration resistance tested to 50 m/s² over 25–150 Hz, covering typical machine-mounted conditions.","metaTitle":"Siemens 5SJ4115-8HG40 SENTRON MCB, 1P, D Curve, 1.6 A","metaDescription":"Siemens 5SJ4115-8HG40 SENTRON miniature circuit breaker, 1-pole, D tripping characteristic, 1.6 A rated current at 40 °C. DIN rail mount, IP20, halogen-free. Sourced to order again","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"18 mm","title":"5SJ4115-8HG40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 240 V 14kA, 1-pole, D, 1.6A, D=70 mm according to UL 489, equal polarity","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"1","Type Of Voltage":"AC/DC","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","acc. to IEC 81346-2":"F","at AC / rated value":"1.6 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","Number Of Poles / Note":"1P","acc. to DIN EN 61346-2":"F","Product Function / Note":"Terminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in","Tunnel Terminals Bottom":"No","at 30 °C / rated value":"1.6 A","at 40 °C / rated value":"1.6 A","at 45 °C / rated value":"1.5 A","at 50 °C / rated value":"1.5 A","at 55 °C / rated value":"1.4 A","at 60 °C / rated value":"1.3 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"1","Tripping Characteristic Class":"D","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","installation environment regarding EMC":"Suitable for environment B (immunity to interference not applicable)","Influence Of The Surrounding Temperature":"max. 95% humidity","insulation voltage / at AC / rated value":"440 V","Product Function / Neutral Conductor Switching":"No","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$77.30","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fa14cb3cb728a95d36bbeb18fe3ea9d1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=521022&mlfb=5SJ4115-8HG40"},"ai":{"faq":[{"question":"What is the D tripping characteristic on this MCB?","answer":"The D curve means the magnetic trip operates at 10 to 20 times the rated current (16 to 32 A for a 1.6 A breaker), designed for loads with high inrush such as small transformers, solenoid banks, and motor starters. The thermal element follows the derating table: 1.6 A up to 40 °C, 1.5 A at 45–50 °C, 1.4 A at 55 °C, 1.3 A at 60 °C."},{"question":"Where can I buy the 5SJ4115-8HG40?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for current pricing and availability — confirmed at quote time."},{"question":"What compliance documentation is available for this MCB?","answer":"The SENTRON 5SJ4 series carries IEC 60898-1 certification for miniature circuit breakers. The housing is halogen-free and silicon-free, meeting typical RoHS/REACH material restrictions. Specific declarations are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4115-8HG40","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/5SJ4115-8HG40 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}}