{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1344-0KK82","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1344-0KK82","canonicalUrl":"https://aoctrl.com/siemens/5SU1344-0KK82","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1344-0KK82","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1344-0KK82, RCBO, 4-pole, 125 A, B characteristic, 400 V AC, 10 kA breaking capacity, 50 Hz, IP20, 11 MW.","salesMarkdown":"The Siemens 5SU1344-0KK82 is a SENTRON RCBO — a combined residual-current circuit breaker with overcurrent protection — rated 125 A at 400 V AC, 50 Hz, in a 4-pole (4P) configuration with a B tripping characteristic. Energy limiting class 3 means it restricts let-through energy during a short circuit, reducing stress on downstream components. The fault-current type is AC-sensitive — it detects sinusoidal residual currents. The unit is instantaneous (no intentional time delay), so it responds immediately to ground faults. 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. Width is 198 mm (11 modular width units at 18 mm each), depth 77 mm, height 90 mm, with an installation depth of 70 mm. Mounting position is any orientation. Supply can enter from top or bottom — no mandatory orientation for the line side. Compliance documentation includes RoHS and REACH declarations as standard for Siemens SENTRON products.","metaTitle":"Siemens 5SU1344-0KK82 SENTRON RCBO, 125 A, 4P, B Curve, 10 k","metaDescription":"Siemens SENTRON 5SU1344-0KK82 RCBO, 125 A rated, 4-pole, B tripping characteristic, 10 kA breaking capacity per EN 60898 & IEC 60947-2. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"198 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","at 30 Cel":"125 A","at 40 Cel":"115.62 A","at 45 Cel":"111.25 A","at 50 Cel":"106.25 A","at 55 Cel":"101.25 A","at 60 Cel":"96.25 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Degree of pollution":"2","Operating frequency":"50 Hz","Product designation":"RCBO","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Design of the product":"Instantaneous","Energy limiting class":"3","Number of width units":"11","Type of fault current":"AC","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"125 A","Tripping characteristic class":"B","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"4","acc. to IEC 60947-2 / rated value":"10 kA","Product feature / Touch protection":"Yes","Supply voltage frequency / rated value":"50 Hz","Tripping residual current / rated value":"30 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"1 kA","Product function / neutral conductor switching":"Yes","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6e2e6ddacb60a42cb10c149ae3a30b8e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=386886&mlfb=5SU1344-0KK82","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1344-0KK82/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1344-0KK82?","answer":"10 kA per both EN 60898 and IEC 60947-2, at 400 V AC."},{"question":"What is the width of 5SU1344-0KK82 in modular units?","answer":"198 mm, which is 11 width units at 18 mm per unit."},{"question":"Where can I buy 5SU1344-0KK82 and how is it quoted?","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/5SU1344-0KK82","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/5SU1344-0KK82 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}}