{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1344-7KK82","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1344-7KK82","canonicalUrl":"https://aoctrl.com/siemens/5SU1344-7KK82","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1344-7KK82","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1344-7KK82 RCBO, 4-pole, 125 A rated current, 30 mA residual, type A, C characteristic, 10 kA breaking capacity.","salesMarkdown":"Siemens 5SU1344-7KK82 is a SENTRON RCBO — a combined residual-current circuit breaker with overcurrent protection — rated 125 A at 30 °C, 4-pole (4P), type A residual current, C characteristic, with a 10 kA breaking capacity per EN 60898 and IEC 60947-2. 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. If this RCBO lives in a crowded panel where internal temperature hits 50 °C, you have 106.25 A of usable capacity — not 125 A. Plan the load accordingly or allow ventilation. The 30 mA type A residual detects pulsating DC fault currents (typical from rectified loads like switching power supplies, LED drivers, or VFDs) as well as sinusoidal AC. Type A is the minimum for circuits feeding electronics; if your load is pure resistive (heaters, incandescent lighting), a type AC would also work, but type A covers more ground without over-specifying. That suits moderate inrush loads — lighting banks, small motor circuits, distribution subfeeds. For high-inrush transformers or large motors, a D curve would be needed; for purely resistive circuits, a B curve would be faster. C is the middle ground, common in general-purpose final subcircuits. If the prospective short-circuit current (PSCC) at the installation point exceeds 10 kA, you need upstream current-limiting or a higher-rated device. This is a standard residential/commercial value; heavy industrial switchboards often require 16–25 kA. The 5SU1344-7KK82 occupies 11 modular width units (198 mm wide) on a DIN rail, with a depth of 77 mm and installation depth of 70 mm. It mounts in any position — vertical, horizontal, or flat — which helps in tight enclosures.","metaTitle":"Siemens 5SU1344-7KK82 SENTRON RCBO, 4P, 125 A, 30 mA, 10 kA","metaDescription":"Siemens 5SU1344-7KK82 SENTRON RCBO, 4-pole, 125 A rated, 30 mA residual, type A, C characteristic, 10 kA breaking capacity. Current lifecycle. Quoted to order against RFQ.","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","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Operating Frequency":"50 Hz","Product Designation":"RCBO","acc. to IEC 81346-2":"F","at AC / rated value":"125 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"A","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"2 022 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","Number Of Modular Width Units":"11","Tripping Characteristic Class":"C","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","Tripping Fault Current / Rated Value":"30 mA","Supply Voltage Frequency / Rated Value":"50 Hz","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 (Operating 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=463684&mlfb=5SU1344-7KK82","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1344-7KK82/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1344-7KK82","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/5SU1344-7KK82 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}}