{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4114-8HG40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4114-8HG40","canonicalUrl":"https://aoctrl.com/siemens/5SJ4114-8HG40","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4114-8HG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker, 1-pole, D tripping characteristic, 0.3 A rated current at 30 °C, 60 V DC max, DIN rail mount, IP20/IP40.","salesMarkdown":"The Siemens 5SJ4114-8HG40 is a 1-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated 0.3 A at 30 °C and capable of interrupting DC circuits up to 60 V. The D-curve means it tolerates inrush currents 10–20 times rated — sized for motor starters, small transformers, or solenoid loads where a B- or C-curve would nuisance-trip on startup. ## Ratings that matter for the panel Thermal derating is published: 0.3 A holds at 40 °C, drops to 0.29 A at 45 °C, 0.28 A at 50 °C, 0.26 A at 55 °C, and 0.25 A at 60 °C. If the breaker lives in a warm cabinet (say, above 40 °C), the actual continuous current it can carry without tripping is lower than the nameplate — plan the load accordingly. ## Physical fit and environmental tolerance Width is 18 mm (1 modular unit), depth 70 mm, height 90 mm — standard single-module MCB footprint. It mounts on standard DIN rail and can be sealed (tamper-evident cover option). ## Vibration and mechanical robustness Rated for vibration resistance of 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4-second dwell). That is roughly 5 g continuous and 6 g at resonance — enough for machine-mounted panels on pumps, compressors, or conveyor drives.","metaTitle":"Siemens 5SJ4114-8HG40 SENTRON MCB, 1P, D-curve, 0.3 A","metaDescription":"Siemens 5SJ4114-8HG40 SENTRON miniature circuit breaker, 1-pole, D tripping characteristic, 0.3 A rated current, 60 V DC max. Active production, DIN rail mount, IP20. Available to","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":"5SJ4114-8HG40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 240 V 14kA, 1-pole, D, 0.3A, 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":"0.3 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":"0.3 A","at 40 °C / rated value":"0.3 A","at 45 °C / rated value":"0.29 A","at 50 °C / rated value":"0.28 A","at 55 °C / rated value":"0.26 A","at 60 °C / rated value":"0.25 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 (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$75.32","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/31a46e1f7787fe8c3ad97cec3726146e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=265528&mlfb=5SJ4114-8HG40"},"ai":{"faq":[{"question":"Where can I buy the 5SJ4114-8HG40 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the 5SJ4114-8HG40's depth and width?","answer":"Depth is 70 mm, width is 18 mm (1 modular unit), height is 90 mm — standard single-module MCB footprint that fits any DIN-rail enclosure."},{"question":"What tripping characteristic does this MCB have?","answer":"It has a D tripping characteristic, which means it tolerates inrush currents 10–20 times the rated 0.3 A — suitable for motor starters, small transformers, and solenoid loads."},{"question":"What compliance documentation is available for the 5SJ4114-8HG40?","answer":"The breaker carries Siemens SENTRON brand compliance with IEC/EN 60898-1 and IEC/EN 60947-2 standards. It is halogen-free and silicon-free. Specific RoHS/REACH declarations are available from Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4114-8HG40","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/5SJ4114-8HG40 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}}