{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1654-1KV20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1654-1KV20","canonicalUrl":"https://aoctrl.com/siemens/5SU1654-1KV20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1654-1KV20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1654-1KV20 FI/LS-protector, Type AC (WS), 300mA sensitivity, 10kA breaking capacity, 1+N-pole, C 20A characteristic.","salesMarkdown":"The Siemens 5SU1654-1KV20 is a combined residual-current and miniature circuit breaker (RCBO) — an FI/LS-protector in Siemens' 5SU1 range. It combines Type AC (wave shape) residual-current detection at 300 mA with a C-curve 20 A overcurrent trip and 10 kA breaking capacity in a 1+N-pole, 70 mm wide housing. The 300 mA sensitivity (IΔn) is the trip threshold for earth leakage — it's a fire-protection level, not the 30 mA needed for personal shock protection. This suits sub-distribution boards supplying fixed equipment where the leakage budget is tight enough that a 30 mA device would nuisance-trip. The C-curve (C 20 A) means the magnetic trip fires at 5–10× In (100–200 A), so it handles motor inrush and transformer energization without dropping out. ## Panel integration The 70 mm width (4 module spaces on a DIN rail) is wider than a standard single-pole MCB — account for the space when laying out the distribution board. The 1+N-pole configuration switches the line conductor and provides neutral disconnection; the neutral pole is switched internally, so a separate neutral bar connection is not needed. Type AC detection handles sinusoidal AC residual currents only — not pulsed DC or smooth DC, so verify the load type does not produce rectified leakage (e.g., from variable-speed drives, LED drivers, or UPS-fed circuits).","metaTitle":"Siemens 5SU1654-1KV20 FI/LS protector, Type AC, 300mA, 10kA,","metaDescription":"Siemens 5SU1654-1KV20 FI/LS-protector Type AC (WS), 300mA, 10kA, 1+N-pole, C 20A. Current lifecycle stage. Sourced 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=155428&mlfb=5SU1654-1KV20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1654-1KV20/alternatives.json"},"ai":{"faq":[{"question":"What is 5SU1654-1KV20 used for?","answer":"It is a combined residual-current and overcurrent protector (RCBO) for AC circuits — Type AC, 300 mA earth leakage, C-curve 20 A, 10 kA breaking capacity. Use it where you need both ground-fault and short-circuit/overload protection in one DIN-rail device, typically in sub-distribution boards for fixed equipment."},{"question":"Where can I buy 5SU1654-1KV20?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. 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/5SU1654-1KV20","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/5SU1654-1KV20 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}}