{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4225-8HG41","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4225-8HG41","canonicalUrl":"https://aoctrl.com/siemens/5SJ4225-8HG41","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4225-8HG41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4, miniature circuit breaker, 2-pole, D-characteristic 25 A, 10 kA per EN 60898, DIN-rail mount, IP20/IP40.","salesMarkdown":"The Siemens 5SJ4225-8HG41 is a SENTRON 5SJ4 miniature circuit breaker with a D tripping characteristic, rated 25 A at 30 °C and 40 °C, and 10 kA breaking capacity per EN 60898. The D-curve means it tolerates the high inrush currents typical of motor loads, transformers, and welding equipment — where the short-circuit trip threshold is 10 to 20 times rated current — without nuisance tripping on startup. ## Thermal derating and ambient limits Rated 25 A at 30 °C and 40 °C, the breaker derates to 24.3 A at 45 °C, 23.8 A at 50 °C, 23.1 A at 55 °C, and 22.5 A at 60 °C. If the panel ambient runs above 40 °C, size the branch circuit for the derated value, not the nameplate 25 A. The unit operates from -40 °C to 75 °C ambient, covering unheated enclosures and high-heat machine cabinets. ## Sourcing posture This 2-pole D-curve 25 A MCB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. For a BOM line or a line-down replacement, submit an RFQ with your target quantity and delivery window.","metaTitle":"Siemens 5SJ4225-8HG41 SENTRON MCB, 2-Pole D 25A, 10kA","metaDescription":"Siemens 5SJ4225-8HG41 SENTRON miniature circuit breaker, 2-pole, D-curve 25A, 10kA breaking capacity per EN 60898. Active production. DIN-rail mount. Sourced 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":"5SJ4225-8HG41","Height":"110 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 240 V 10kA, 2-pole, D, 25A, D=70 mm according to UL 489","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","acc. to IEC 81346-2":"F","at AC / rated value":"25 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","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":"25 A","at 40 °C / rated value":"25 A","at 45 °C / rated value":"24.3 A","at 50 °C / rated value":"23.8 A","at 55 °C / rated value":"23.1 A","at 60 °C / rated value":"22.5 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","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)","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/a433cf700b626dec05610c22210fb418.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=363867&mlfb=5SJ4225-8HG41"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SJ4225-8HG41?","answer":"It is rated 10 kA per EN 60898, which certifies the breaker can safely interrupt fault currents up to 10,000 A under standard test conditions."},{"question":"Where can I buy 5SJ4225-8HG41 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ with your quantity and target delivery date; availability and current pricing are confirmed at quote time."},{"question":"What is the difference between 5SJ4225-8HG41 and 5SJ6220-6?","answer":"The 5SJ6220-6 is a 2-pole C-curve 20 A MCB versus the D-curve 25 A 5SJ4225-8HG41. Both mount on standard DIN rail in 2 MWU, so they share the same footprint, but the D-curve on this part handles higher inrush (10–20× rated) for motor and transformer loads, while the C-curve (5–10×) suits general distribution. They are not direct drop-in replacements without verifying the trip coordination and load current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4225-8HG41","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/5SJ4225-8HG41 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}}