{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9156-7KK63","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9156-7KK63","canonicalUrl":"https://aoctrl.com/siemens/5SU9156-7KK63","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9156-7KK63","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9 RCBO, RCD-operated circuit breaker, 2-pole 1P+N, 63 A, 30 mA, Type A, C-curve, 6 kA (EN 60898) / 10 kA (IEC 60947-2).","salesMarkdown":"## RCD-operated circuit breaker — 63 A, Type A, C-curve The Siemens 5SU9156-7KK63 is a SENTRON RCBO — an RCD-operated circuit breaker combining overcurrent and residual-current protection in a single 36 mm wide (2 width units) module. It switches a 63 A rated current at 30 °C, with the C tripping characteristic handling moderate inrush from motor or lighting loads. The Type A residual-current detection catches both sinusoidal AC faults and pulsating DC fault currents up to 30 mA — the standard choice for single-phase circuits feeding electronics, appliances, or small drives. The 1P+N pole configuration protects the live conductor while switching the neutral; the protected pole is identified on the nameplate. ## Thermal derating — what the 63 A rating actually delivers At 40 °C the device is rated 59.22 A; at 45 °C it drops to 57.33 A; at 50 °C it is 54.81 A; at 55 °C it is 51.03 A. For a 63 A circuit in a warm enclosure, size the load at the 45 °C figure (57.33 A) unless you have forced ventilation. ## Panel fit and wiring — 36 mm wide, 70 mm installation depth The module is 36 mm wide (2 width units), 90 mm tall, with a total depth of 77 mm and an installation depth of 70 mm — the difference is the front projection of the toggle and test button. Touch protection is built in — no exposed live parts after installation.","metaTitle":"Siemens 5SU9156-7KK63 SENTRON RCBO, 63 A, 30 mA, Type A, 6 k","metaDescription":"Siemens 5SU9156-7KK63 SENTRON RCBO, 63 A rated at 30 °C, Type A, 30 mA, 6 kA per EN 60898, 10 kA per IEC 60947-2. Current production. Quoted 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":"1.5 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"63 A","at 40 Cel":"59.22 A","at 45 Cel":"57.33 A","at 50 Cel":"54.81 A","at 55 Cel":"51.03 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":"63 A","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","Supply voltage frequency / rated value":"50 Hz","Tripping residual current / rated value":"10 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/177f7345562f35cea94706c40b66cdc3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629239&mlfb=5SU9156-7KK63","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9156-7KK63/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU9156-7KK63 and what is the lead time?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"What is the difference between 5SU9156-7KK63 and 5SL6563-7BB?","answer":"The 5SL6563-7BB is a standard MCB (overcurrent protection only) without residual-current detection. The 5SU9156-7KK63 is an RCBO that combines the same C-curve overcurrent trip with a 30 mA Type A RCD in one module. If the panel specification calls for an RCBO, the 5SL6563-7BB cannot substitute without adding a separate RCD upstream."},{"question":"What is the depth of 5SU9156-7KK63?","answer":"Total depth is 77 mm; installation depth (behind the panel face) is 70 mm."},{"question":"What conductor sizes does 5SU9156-7KK63 accept?","answer":"Both solid and stranded conductors from 0.75 to 35 mm²."},{"question":"Will 5SU9156-7KK63 drop into a panel specified for 5SL6563-7BB without rewiring?","answer":"Mechanically yes — both are 36 mm wide (2 width units) DIN-rail modules. Electrically, the 5SU9156-7KK63 requires a neutral connection for the RCD circuit, whereas the 5SL6563-7BB does not. If the existing wiring already brings the neutral to the device location, no rewiring is needed; if the neutral is jumpered past the MCB position, you must add a neutral tail."},{"question":"What compliance documentation does Siemens provide for 5SU9156-7KK63?","answer":"The device carries approvals per EN 60898 (6 kA) and IEC 60947-2 (10 kA). It is halogen-free and silicon-free. Standard Siemens documentation includes CE declaration of conformity and the manufacturer's test certificate; RoHS and REACH compliance is covered by the SENTRON product family declaration. Specific document requests are handled at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9156-7KK63","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/5SU9156-7KK63 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}}