{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1674-7AK82","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1674-7AK82","canonicalUrl":"https://aoctrl.com/siemens/5SU1674-7AK82","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1674-7AK82","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1674-7AK82 RCBO, 4-pole, 125 A, C-curve, 300 mA Type B residual current, 10 kA breaking capacity (EN 60898 / IEC 60947-2).","salesMarkdown":"The Siemens 5SU1674-7AK82 is a SENTRON RCBO combining overcurrent protection and residual current detection in a single 4-pole device. Rated 125 A at 30 °C with a C-curve tripping characteristic and 300 mA Type B residual current sensitivity, it handles sinusoidal AC, pulsating DC, and smooth DC fault currents — the Type B rating is what you need for VFD, UPS, or EV charging circuits where pure DC leakage can blind a standard RCD. Breaking capacity is 10 kA per both EN 60898 and IEC 60947-2, so it clears line-to-neutral and line-to-earth faults up to that level without upstream cascading. The 4-pole design (4P) protects all live conductors; the neutral pole is switched and monitored. ## Temperature derating and panel fit At 40 °C it derates to 115.62 A, at 45 °C to 111.25 A, at 50 °C to 106.25 A, at 55 °C to 101.25 A, and at 60 °C to 96.25 A. The unit occupies 11 modular width units (198 mm wide) with a depth of 77 mm and an installation depth of 70 mm. IP20 rating applies once the distribution board is installed with connected conductors — this is a panel-internal device, not a weather-exposed one.","metaTitle":"Siemens 5SU1674-7AK82 SENTRON RCBO, 125A 4P C-curve 300mA Ty","metaDescription":"Siemens 5SU1674-7AK82 SENTRON RCBO, 125A rated, 4-pole, C-curve, 300mA Type B residual current, 10kA breaking capacity. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"198 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"125 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","Product Designation":"RCBO","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Super resistant K","Residual Current Type":"B","Weight With Packaging":"2 066 g","at 30 °C rated value":"125 A","at 40 °C rated value":"115.62 A","at 45 °C rated value":"111.25 A","at 50 °C rated value":"106.25 A","at 55 °C rated value":"101.25 A","at 60 °C rated value":"96.25 A","Energy Limitation Class":"3","For Testing Equipment Minimum":"100 V","Number Of Modular Width Units":"11","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"4","according to EN 60898 rated value":"10 kA","Tripping Fault Current Rated Value":"300 mA","insulation voltage (Ui) rated value":"440 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 000 V","according to IEC 60947-2 rated value":"10 kA","Surge Current Resistance At (8/20) μS":"3 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC","Mechanical Service Life (Operating Cycles) Typical":"10 000","for rated value of the current at AC in hot operating state per pole":"22 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/89cae7acba5b4ef482abce0f8ffcd150.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=491627&mlfb=5SU1674-7AK82","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1674-7AK82/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1674-7AK82?","answer":"10 kA per both EN 60898 and IEC 60947-2, covering line-to-neutral and line-to-earth faults."},{"question":"What does Type B residual current mean on this RCBO?","answer":"Type B detects sinusoidal AC, pulsating DC, and smooth DC fault currents — required for circuits with VFDs, UPS systems, or EV chargers that can produce pure DC leakage."},{"question":"What is the temperature derating for 5SU1674-7AK82?","answer":"Rated 125 A at 30 °C; derates to 115.62 A at 40 °C, 111.25 A at 45 °C, 106.25 A at 50 °C, 101.25 A at 55 °C, and 96.25 A at 60 °C."},{"question":"Where can I buy 5SU1674-7AK82?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1674-7AK82","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/5SU1674-7AK82 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}