{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-7KM20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-7KM20","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-7KM20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-7KM20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9 series, RCD-operated circuit breaker, 2-pole 1P+N, 20 A rated, Type A, tripping characteristic C, 6 kA (EN 60898) / 10 kA (IEC 60947-2), 36 mm wide, 77 mm deep.","salesMarkdown":"The Siemens 5SU9356-7KM20 is a SENTRON RCD-operated circuit breaker — an RCBO combining overcurrent protection and residual current detection in a single 2-module (36 mm wide) package. The 1P+N pole configuration switches the phase and monitors the neutral; the protected pole count is 1. ## Thermal derating and conductor sizing Current rating is temperature-dependent: 20 A at 30 °C ambient, derating to 18.8 A at 40 °C, 18.2 A at 45 °C, 17.4 A at 50 °C, and 16.2 A at 55 °C. The maximum power loss is 1.5 W. Halogen-free and silicon-free construction, rated IP20 with conductors connected and the distribution board installed. Overvoltage category III, energy limiting class 3. Touch protection is fitted as standard.","metaTitle":"Siemens 5SU9356-7KM20 SENTRON RCD Circuit Breaker, 20 A, Typ","metaDescription":"Siemens 5SU9356-7KM20 SENTRON RCD-operated circuit breaker, 20 A rated, Type A, 6 kA (EN 60898) / 10 kA (IEC 60947-2). Current production. Sourced to order against RFQ.","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":"1.5 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"20 A","at 40 Cel":"18.8 A","at 45 Cel":"18.2 A","at 50 Cel":"17.4 A","at 55 Cel":"16.2 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 ... +45 °C","Product designation":"RCD-operated circuit breaker","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":"A","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU9","Current / at AC / rated value":"20 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":"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","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/79f6610cfebb3bc98ed563eb1e55c601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629388&mlfb=5SU9356-7KM20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-7KM20/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU9356-7KM20?","answer":"6 kA per EN 60898 and 10 kA per IEC 60947-2. Use the IEC 60947-2 figure for industrial panel coordination."},{"question":"What conductor sizes does 5SU9356-7KM20 accept?","answer":"Solid or stranded conductors from 0.75 mm² up to 35 mm²."},{"question":"Where can I buy 5SU9356-7KM20?","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/5SU9356-7KM20","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/5SU9356-7KM20 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}}