{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-7KV25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-7KV25","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-7KV25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-7KV25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1656-7KV25 FI/LS protector, Type A (PSE/SSF), 70mm wide, 300mA residual current, 6kA breaking capacity, 1+N-pole, C-curve 25A.","salesMarkdown":"The Siemens 5SU1656-7KV25 is a combined residual current device and miniature circuit breaker (RCBO) — an FI/LS protector in Siemens' terminology. It packs Type A RCD sensitivity (300 mA) and a C-curve MCB (25 A) into a single 70 mm-wide, 1+N-pole module. Type A detection means it catches both sinusoidal AC residual currents and pulsating DC residual currents — the kind you get from single-phase rectifiers in washing machines, LED drivers, or EV chargers. The 300 mA trip threshold is a fire-protection level, not personnel protection (30 mA is the touch-safety threshold). This unit goes into sub-circuits where you need ground-fault fire protection plus overcurrent protection in one DIN-rail slot, typically feeding socket outlets or fixed equipment in commercial kitchens, laundries, or small industrial panels. The C-curve on the 25 A MCB section means it holds 5–10× rated current for short thermal delays — sized for motor-start or capacitive inrush loads that would nuisance-trip a B-curve. At 25 A it's a fit for a 6 mm² copper circuit feeding multiple socket outlets or a small fixed load.","metaTitle":"Siemens 5SU1656-7KV25 FI/LS Protector Type A, 25A C, 300mA,","metaDescription":"Siemens 5SU1656-7KV25 FI/LS protector, Type A (PSE/SSF), 25A C-curve MCB, 300mA RCD, 6kA breaking capacity, 1+N pole. Current lifecycle. Sourced to order.","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=308084&mlfb=5SU1656-7KV25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-7KV25/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1656-7KV25's breaking capacity and residual current rating?","answer":"It has a 6 kA breaking capacity and a 300 mA Type A residual current sensitivity, combined with a 25 A C-curve MCB in a 1+N-pole 70 mm-wide housing."},{"question":"Where can I buy the 5SU1656-7KV25 and get current pricing?","answer":"The 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/5SU1656-7KV25","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/5SU1656-7KV25 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}}