{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9156-7KK32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9156-7KK32","canonicalUrl":"https://aoctrl.com/siemens/5SU9156-7KK32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9156-7KK32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9156-7KK32, RCBO, 2-pole, 32 A, 10 mA, Type A, tripping characteristic C, 6 kA (EN 60898) / 10 kA (IEC 60947-2).","salesMarkdown":"The Siemens 5SU9156-7KK32 is a 2-pole RCBO — a combined residual-current device (RCD) and miniature circuit breaker (MCB) in one 36 mm wide module. Rated 32 A at 30 °C with a 10 mA residual-current trip threshold and Type A sensitivity, it catches sinusoidal AC faults and pulsating DC faults up to 10 mA. Rated short-circuit capacity is 6 kA per EN 60898 and 10 kA per IEC 60947-2. The 10 kA figure under 60947-2 is the one that matters for industrial panel coordination — it tells you this RCBO can safely interrupt a fault up to 10 kA at the rated voltage without welding its contacts or cascading the arc upstream. The 6 kA EN 60898 rating is the residential/commercial standard; the higher IEC rating gives you headroom in a plant-floor distribution sub-panel. ## Thermal derating and environment At 40 °C it derates to 30.08 A; at 50 °C to 27.84 A; at 55 °C to 25.92 A.","metaTitle":"Siemens 5SU9156-7KK32 SENTRON RCBO, 32 A, 10 mA, Type A, 2-p","metaDescription":"Siemens 5SU9156-7KK32 SENTRON RCBO, 32 A rated, 10 mA residual current, Type A, 2-pole, 6 kA (EN 60898) / 10 kA (IEC 60947-2). Active production, available 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","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":"32 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"A","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"280 g","at 30 °C / rated value":"32 A","at 40 °C / rated value":"30.08 A","at 45 °C / rated value":"29.12 A","at 50 °C / rated value":"27.84 A","at 55 °C / rated value":"25.92 A","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"6 kA","For Testing Equipment / Minimum":"125 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":"10 mA","insulation voltage (Ui) / rated value":"264 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"4 000 V","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","Type Of Voltage / Of The Operating Voltage":"AC","Product Component / 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/b46133278558d2754450cd241493e7d4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629236&mlfb=5SU9156-7KK32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9156-7KK32/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU9156-7KK32?","answer":"6 kA per EN 60898 and 10 kA per IEC 60947-2. The 10 kA rating under 60947-2 is the figure to use for industrial panel coordination."},{"question":"What is the residual current rating and type?","answer":"10 mA, Type A — it detects sinusoidal AC faults and pulsating DC faults up to that threshold."},{"question":"Where can I buy 5SU9156-7KK32?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the difference between 5SU9156-7KK32 and 5SL6550-7BB?","answer":"The 5SL6550-7BB is a different class — a 2-pole MCB only, no residual-current protection. The 5SU9156-7KK32 is an RCBO (MCB + RCD combined). They share the same 36 mm width and DIN-rail footprint, but the 5SL6550-7BB cannot provide ground-fault protection. If your panel was wired around the 5SL6550-7BB, dropping in the 5SU9156-7KK32 requires checking that the neutral bar and wiring accommodate the additional RCD connections."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9156-7KK32","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/5SU9156-7KK32 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}}