{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-7KN25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-7KN25","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-7KN25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-7KN25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9 series, RCD-operated circuit breaker (RCBO), 25 A, Type A, C characteristic, 1P+N, 6 kA (EN 60898) / 10 kA (IEC 60947-2), 2 MW width.","salesMarkdown":"The Siemens 5SU9356-7KN25 is a 1P+N RCD-operated circuit breaker (RCBO) from the SENTRON 5SU9 series, combining overcurrent and residual-current protection in a single 36 mm-wide (2 MW) module. The Type A fault-current detection catches pulsating DC and AC residual currents — common on single-phase electronics, variable-speed drives, and switching power supplies. ## Ratings that matter for panel fit Rated current is 25 A at 30 °C ambient, but the thermal derating curve is worth noting: at 40 °C it's 23.5 A, at 45 °C it's 22.75 A, and at 55 °C it drops to 20.25 A. If your panel runs warm — say, a packed enclosure with multiple breakers — size the load side accordingly. Solid and stranded conductors from 0.75 to 35 mm² are accepted — that covers everything from 1.5 mm² lighting circuits up to 10 mm² feeder tails. The 5SU9356-7KN25 carries IP20 protection (finger-safe, with conductors connected and distribution board installed). Touch protection is built in. The design references EN 60898 and IEC 60947-2 for breaking capacity, and the component function code is F per DIN EN 61346-2 and DIN EN 81346-2.","metaTitle":"Siemens 5SU9356-7KN25 SENTRON RCBO, 25 A, Type A, 6 kA, 1P+N","metaDescription":"Siemens 5SU9356-7KN25 SENTRON RCBO, 25 A rated, Type A, 6 kA (EN 60898) / 10 kA (IEC 60947-2), C curve, 1P+N, 2 MW. Current production. Sourced to order. Request quote.","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":"25 A","at 40 Cel":"23.5 A","at 45 Cel":"22.75 A","at 50 Cel":"21.75 A","at 55 Cel":"20.25 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":"25 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=629395&mlfb=5SU9356-7KN25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-7KN25/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU9356-7KN25 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for your quantity and delivery window."},{"question":"What is 5SU9356-7KN25's listed depth?","answer":"Total depth is 77 mm; installation depth (behind the panel face) is 70 mm."},{"question":"What conductor sizes does 5SU9356-7KN25 accept?","answer":"Both solid and stranded conductors from 0.75 mm² up to 35 mm²."},{"question":"Will 5SU9356-7KN25 drop into a panel specified for 5SU9156-7VK06 without rewiring?","answer":"Both are 1P+N RCBOs in a 2 MW (36 mm) form factor, but verify the rating and curve match — the 5SU9156-7VK06 is a different variant in the same 5SU9 family. The 5SU9356-7KN25 is 25 A, Type A, C curve; check your panel's original spec for current rating and fault type before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-7KN25","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/5SU9356-7KN25 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}}