{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-7KN32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-7KN32","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-7KN32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-7KN32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9 series, RCD-operated circuit breaker (RCBO), 32 A rated, Type A, 6 kA (EN 60898) / 10 kA (IEC 60947-2), 1P+N, 2 modules wide (36 mm), IP20.","salesMarkdown":"The Siemens 5SU9356-7KN32 is a 2-module-wide (36 mm) RCD-operated circuit breaker — an RCBO — from the SENTRON 5SU9 series. It combines overcurrent protection (MCB function) with residual current detection in a single DIN-rail unit, saving a slot compared to separate breaker + RCD. The Type A fault-current sensitivity means it catches pulsating DC residual currents from electronics or rectifier loads — not just pure sinusoidal AC faults — which is the standard pick for modern panels with switched-mode supplies. ## Breaking capacity — which number governs your installation For a panel builder, the practical takeaway: if your declared SCCR at the board is 6 kA or less, this unit meets it under EN 60898; if the board is rated 10 kA, you rely on the IEC 60947-2 rating — verify the installation category and upstream protection coordination. Depth is 77 mm (installation depth 70 mm), so it clears a standard 80 mm-deep enclosure backplate without crowding. Conductor range: solid or stranded 0.75 to 35 mm² — that 35 mm² upper end handles the full 32 A without needing a ferrule or reducing tail. Supply can enter from top or bottom, which simplifies busbar routing in a crowded board. IP20 with conductors connected and distribution board installed — no washdown rating, so keep it inside the panel. ## Thermal derating — the real-world current At 40 °C it derates to 30.08 A; at 45 °C to 29.12 A; at 50 °C to 27.84 A; at 55 °C to 25.92 A. For a 32 A circuit, a 45 °C ambient knocks off nearly 3 A. Plan the load accordingly or move the RCBO to a cooler zone in the board.","metaTitle":"Siemens 5SU9356-7KN32 SENTRON RCBO, 32 A, Type A, 6 kA","metaDescription":"Siemens SENTRON 5SU9356-7KN32 RCD-operated circuit breaker, 32 A rated, Type A fault current, 6 kA breaking capacity (EN 60898). Current lifecycle stage. Quoted to order against RF","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"32 A","at 40 Cel":"30.08 A","at 45 Cel":"29.12 A","at 50 Cel":"27.84 A","at 55 Cel":"25.92 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":"32 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=629396&mlfb=5SU9356-7KN32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-7KN32/alternatives.json"},"ai":{"faq":[{"question":"Will 5SU9356-7KN32 drop into a panel specified around 5SU9354-7KK16?","answer":"Physically yes — both are 2-module-wide (36 mm) DIN-rail devices from the same SENTRON 5SU9 series, same 77 mm depth. The wiring terminals accept the same conductor range. The functional difference is current rating (32 A vs 16 A) and trip curve (C vs K). If the panel was wired and busbarred for 16 A, swapping to a 32 A unit without verifying the downstream cable and load is not safe."},{"question":"What compliance documentation is available for 5SU9356-7KN32?","answer":"The device carries approvals per EN 60898 (6 kA) and IEC 60947-2 (10 kA). It is halogen-free and silicon-free. The product designation and reference standards are printed on the nameplate. Specific RoHS/REACH declarations are provided by Siemens for the SENTRON series upon request through the supply chain."},{"question":"Where can I buy 5SU9356-7KN32 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit a request with your target quantity and delivery window for a firm quotation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-7KN32","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/5SU9356-7KN32 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}}