{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-1KK08","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-1KK08","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-1KK08","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-1KK08","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1353-1KK08 RCBO, 8 A rated, C-curve tripping characteristic, 1P+N, AC fault current type, 4.5 kA (EN 60898) / 15 kA (IEC 60947-2), 2 MW, IP20.","salesMarkdown":"It protects a single-phase final subcircuit (1P+N, 2 MW wide) against overload, short-circuit, and earth leakage. The C-curve means it holds up to 5–10× rated current momentarily, so it is the standard choice for inductive loads like small motors, contactor coils, and fluorescent lighting where inrush exceeds a B-curve's tolerance. Breaking capacity is rated 4.5 kA per EN 60898 and 15 kA per IEC 60947-2. The higher IEC figure applies when the device is used as a circuit breaker in an industrial distribution board; the EN figure governs domestic/commercial installations. Either way, the 15 kA SCCR gives headroom for most panelboard fault levels without upstream fusing. The residual-current element detects AC fault currents only (Type AC). That covers sinusoidal earth leakage from live-to-ground faults in standard resistive and inductive loads. Above that, the bimetallic strip trips earlier to protect the device and wiring. At 40 °C it is 7.52 A; at 50 °C it drops to 6.96 A; at 60 °C it is 6.48 A; at 70 °C it is 5.84 A. Factor this into the load schedule before committing the BOM line. Width is 36 mm (2 MW), depth 77 mm, height 90 mm. Installation depth behind the panel is 70 mm. Mounting position is any orientation — no derating needed for horizontal or inverted fit. Terminals accept 0.75 mm² to 25 mm² — solid or stranded. The larger cross-section is useful for looping through downstream devices without a separate distribution block.","metaTitle":"Siemens 5SU1353-1KK08 SENTRON RCBO, 8 A C-curve, 1P+N","metaDescription":"Siemens 5SU1353-1KK08 SENTRON RCBO, 8 A rated, C-curve, 1P+N, 4.5 kA (EN 60898) / 15 kA (IEC 60947-2). Active production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"36 mm","Height":"90 mm","Maximum":"25 mm²","Minimum":"0.75 mm²","at 30 Cel":"8 A","at 40 Cel":"7.52 A","at 45 Cel":"7.28 A","at 50 Cel":"6.96 A","at 55 Cel":"6.48 A","at 60 Cel":"6.48 A","at 65 Cel":"6.16 A","at 70 Cel":"5.84 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product designation":"RCBO","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Instantaneous","Energy limiting class":"3","Number of width units":"2","Type of fault current":"AC","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"8 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"4.5 kA","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"1","acc. to IEC 60947-2 / rated value":"15 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/c776d3a937c7e4a1407784c89c324a4e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=526155&mlfb=5SU1353-1KK08","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1353-1KK08/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1353-1KK08?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the difference between 5SU1353-1KK08 and the 5SL6563-7BB?","answer":"The 5SL6563-7BB is a Siemens SENTRON MCB (overcurrent only), not an RCBO. The 5SU1353-1KK08 adds residual-current protection (Type AC) in the same 2 MW footprint. If the panel already has a separate RCD upstream, the 5SL6563-7BB may be a cost-effective alternative; if the design calls for a combined device, the 5SU1353-1KK08 is the correct fit."},{"question":"What compliance documentation is available for 5SU1353-1KK08?","answer":"The device carries approvals per EN 60898 and IEC 60947-2. It is halogen-free and silicon-free. Standard Siemens declarations for RoHS and REACH are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-1KK08","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/5SU1353-1KK08 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}}