{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-1KV32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-1KV32","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-1KV32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-1KV32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1656-1KV32 FI/LS protector, Type AC (WS), D=70mm, IΔn 300mA, 6kA, 1+N-pole, C-curve 32A.","salesMarkdown":"The Siemens 5SU1656-1KV32 is a combined residual-current and overcurrent protective device (RCBO) — an FI/LS protector in Siemens' 5SU1 series. The 300 mA sensitivity is a fire-protection threshold (not personal shock protection), so it goes on submain or distribution circuits where 30 mA nuisance tripping is a concern. The C-curve 32 A overcurrent characteristic handles motor-starting inrush and moderate inductive loads without nuisance trips on transformer or capacitor bank energisation. The 6 kA breaking capacity (Icn) at 230/400 V is the standard domestic and light commercial rating per IEC 61009-1. In a panel with a higher prospective fault current (above 6 kA), this unit needs an upstream current-limiting device — typically a 63 A gG fuse or a higher-rated MCB — to keep the let-through energy within its rated short-circuit capacity. The 1+N-pole form factor (switched phase, switched neutral) occupies a single 70 mm wide module on the DIN rail, matching the standard Siemens 5SU1 family footprint. The part is not a short-run or niche variant; it is a standard catalogue RCBO that replenishes on normal lead times.","metaTitle":"Siemens 5SU1656-1KV32 FI/LS RCBO, Type AC, 300mA, 6kA, 1+N C","metaDescription":"Siemens 5SU1656-1KV32 FI/LS protector, Type AC, 300mA residual, 6kA breaking capacity, 1+N-pole C-curve 32A. 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=169283&mlfb=5SU1656-1KV32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-1KV32/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1656-1KV32 used for?","answer":"It is a combined residual-current and overcurrent protective device (RCBO) for final circuits requiring both earth-leakage and overload/short-circuit protection in a single DIN-rail module. Typical applications include lighting, socket outlets, and small motor circuits in commercial and residential distribution boards."},{"question":"Where can I buy the 5SU1656-1KV32?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote — submit an RFQ for a firm commercial response."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-1KV32","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/5SU1656-1KV32 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}}