{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-6KV32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-6KV32","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-6KV32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-6KV32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1656-6KV32 FI/LS protector, Type A (PSE/SSF), 1+N-pole, B-curve 32A, 300mA rated residual current, 6kA breaking capacity, 70mm width.","salesMarkdown":"The Siemens 5SU1656-6KV32 is a combined residual-current device and miniature circuit breaker (RCBO) — an FI/LS protector in Siemens' 5SU1 series. It packs Type A earth-leakage detection (300 mA rated residual current) and a B-curve overcurrent trip (32 A) into a single 70 mm-wide, 1+N-pole module. The 300 mA sensitivity is a fire-protection level, not personnel protection (30 mA is the touch-safe threshold). Use this where the earth-leakage alarm threshold is set above equipment leakage but below cable-insulation damage risk. The B-curve trips magnetically at 3–5× In (96–160 A for this 32 A unit), so it clears fast on short circuits but tolerates the inrush of resistive and modest motor loads. At 70 mm wide (roughly 4 modular spaces on DIN rail), this RCBO replaces a separate RCD and MCB in the same enclosure footprint. The 1+N-pole configuration switches both line and neutral, which is standard for single-phase final circuits in many European and Asian markets. No direct cross-reference or second-source equivalent is recorded on this line; the Siemens 5SU1 family shares the same mechanical footprint and terminal layout across the range, so a parametric substitute (different rating or curve) would mount identically on the DIN rail.","metaTitle":"Siemens 5SU1656-6KV32 FI/LS Protector Type A, 32A B-Curve, 3","metaDescription":"Siemens 5SU1656-6KV32 FI/LS protector, Type A (PSE/SSF), 1+N-pole B 32A, 300mA, 6kA. 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=83352&mlfb=5SU1656-6KV32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-6KV32/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1656-6KV32 used for?","answer":"It is a combined RCD/MCB (FI/LS protector) for single-phase final circuits requiring Type A earth-leakage protection at 300 mA and B-curve overcurrent protection up to 32 A, with a 6 kA breaking capacity."},{"question":"Where can I buy 5SU1656-6KV32 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for current availability and pricing; stock and lead time are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-6KV32","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/5SU1656-6KV32 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}}