{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-1KK08","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-1KK08","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-1KK08","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-1KK08","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1 series RCBO, 8 A rated, C tripping characteristic, 6 kA breaking capacity, 1P+N, 2 MW, instantaneous design.","salesMarkdown":"The Siemens 5SU1356-1KK08 is a SENTRON 5SU1 series RCBO — a combined residual-current circuit breaker with overcurrent protection, rated 8 A at AC with a C tripping characteristic and 6 kA breaking capacity per EN 60898. It occupies 2 MW (36 mm wide) on a DIN rail, 1P+N configuration, and is designed for instantaneous fault current detection (AC type). ## Thermal derating and conductor sizing Rated current derates with ambient temperature: 8 A at 30 °C, 7.52 A at 40 °C, 7.28 A at 45 °C, 6.96 A at 50 °C, 6.48 A at 55 °C and 60 °C, 6.16 A at 65 °C, and 5.84 A at 70 °C. If the distribution board runs warm — common in crowded enclosures — the effective ampacity drops; size upstream protection accordingly. Snap-on mounting for 35 mm DIN rail, any position. Halogen-free and silicon-free construction. Supply connection can be from top or bottom.","metaTitle":"Siemens 5SU1356-1KK08 SENTRON RCBO, 8A C-curve, 6kA, 1P+N","metaDescription":"Siemens 5SU1356-1KK08 SENTRON RCBO, 8 A rated, C tripping characteristic, 6 kA breaking capacity per EN 60898, 1P+N, 2 MW. Current production. Sourced 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","Solid":"0.75 ... 35 mm²","Width":"36 mm","Height":"90 mm","Maximum":"2.4 W","Stranded":"0.75 ... 35 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","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","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":"6 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","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","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/7feb71143d82e2932d6d41ed217920b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=80259&mlfb=5SU1356-1KK08","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-1KK08/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1356-1KK08 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time, not a published figure."},{"question":"What is the depth of 5SU1356-1KK08?","answer":"Overall depth is 77 mm; installation depth (behind the panel face) is 70 mm."},{"question":"What conductor sizes does 5SU1356-1KK08 accept?","answer":"Solid or stranded conductors from 0.75 mm² up to 35 mm²."},{"question":"Will 5SU1356-1KK08 drop into a panel specified around 5SL6563-7BB without rewiring?","answer":"Both are 2 MW DIN-rail RCBOs, but the 5SL6563-7BB is a different series with different breaking capacity and tripping characteristics — verify coordination and terminal compatibility before substituting. The 5SU1356-1KK08 is a current-production part; the 5SL6563-7BB may have a different lifecycle status."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-1KK08","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/5SU1356-1KK08 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}}