{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1654-0KV25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1654-0KV25","canonicalUrl":"https://aoctrl.com/siemens/5SU1654-0KV25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1654-0KV25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1654-0KV25 FI/LS protector, Type AC (WS), 1+N-pole, B-curve 25A, 300mA residual, 10kA breaking capacity, 70mm width.","salesMarkdown":"The Siemens 5SU1654-0KV25 is a combined residual-current device and miniature circuit breaker (RCBO) — an FI/LS protector in Siemens' terminology — in a single 1+N-pole module. The B-curve 25A overcurrent trip protects cable and loads against short-circuit and overload up to that rating, while the 300 mA Type AC residual-current element detects sinusoidal AC earth faults. Type AC detection covers sinusoidal AC residual currents only — it is not rated for pulsating DC or smooth DC faults, so the application must be purely AC loads without electronic rectification that could mask a fault. ## Deployment context The 70 mm width (4 module spaces on a DIN rail) fits standard Siemens distribution boards and enclosures. The 1+N-pole format switches the line conductor and switches the neutral, so it is suited for single-phase final subcircuits in TN or TT earthing systems. In a panel, treat it like any DIN-rail mounted RCBO — leave air gap for heat dissipation at 25 A continuous load and verify the neutral bar arrangement matches the switched neutral output.","metaTitle":"Siemens 5SU1654-0KV25 FI/LS Protector, Type AC, 25A B-Curve,","metaDescription":"Siemens 5SU1654-0KV25 FI/LS protector, Type AC, 25A B-curve, 300mA residual, 10kA breaking capacity. Current lifecycle stage. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=450893&mlfb=5SU1654-0KV25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1654-0KV25/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of the 5SU1654-0KV25?","answer":"It is a 1+N-pole FI/LS protector with a B-curve 25A overcurrent trip, 300 mA Type AC residual current detection, and 10 kA breaking capacity, in a 70 mm wide housing."},{"question":"Where can I buy the 5SU1654-0KV25?","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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1654-0KV25","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/5SU1654-0KV25 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}}