{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-1KN20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-1KN20","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-1KN20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1KN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9356-1KN20, RCBO, 2-pole 1P+N, 20 A, C-curve, 30 mA Type AC residual current, 6 kA / 10 kA breaking capacity.","salesMarkdown":"The Siemens 5SU9356-1KN20 is a SENTRON RCBO — a combined RCD and MCB in one 2-module-wide unit. It protects a single-phase final subcircuit against overload, short-circuit, and earth leakage in one compact package. The 30 mA Type AC residual current detection catches sinusoidal AC fault currents, and the C-curve magnetic trip handles moderate inrush from motorized or capacitive loads. Rated current is 20 A at 30 °C, derated to 18.8 A at 40 °C and 16.2 A at 55 °C — the thermal curve matters if the RCBO sits in a crowded enclosure or near a heat source. The C-curve (5–10× In magnetic release) suits mixed resistive-inductive loads like small motors, pumps, and lighting ballasts. Type AC residual current means it detects sinusoidal AC faults only; for pulsed DC or smooth DC fault currents you need Type A or F. The 1P+N switching arrangement breaks the phase and switches the neutral, common for single-phase final circuits in TN and TT systems. Depth is 77 mm, installation depth 70 mm — check the enclosure door clearance if using a shallow consumer unit. IP20 with the distribution board installed and conductors connected; not rated for wet or washdown environments.","metaTitle":"Siemens 5SU9356-1KN20 SENTRON RCBO, 2-pole 20A C-curve 30mA","metaDescription":"Siemens 5SU9356-1KN20 SENTRON RCBO, 2-pole 1P+N, 20A C-curve, 30mA Type AC residual current. 6kA (EN 60898) / 10kA (IEC 60947-2). Current production. Sourced 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":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","Product Designation":"RCD-operated circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"230/240 V","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"AC","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"280 g","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.8 A","at 45 °C / rated value":"18.2 A","at 50 °C / rated value":"17.4 A","at 55 °C / rated value":"16.2 A","Number Of Modular Width Units":"2","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":"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","operational current / at AC / rated value":"20 A","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/79f6610cfebb3bc98ed563eb1e55c601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629368&mlfb=5SU9356-1KN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1KN20/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU9356-1KN20?","answer":"6 kA per EN 60898 and 10 kA per IEC 60947-2 — the higher IEC figure applies when the RCBO is used in industrial distribution per that standard."},{"question":"What is the residual current rating and type?","answer":"30 mA, Type AC — detects sinusoidal AC fault currents only. For pulsed or smooth DC faults, specify Type A or F."},{"question":"Where can I buy 5SU9356-1KN20?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit a request with your target quantity and delivery window for a current price and availability check."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-1KN20","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/5SU9356-1KN20 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}}