{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1653-7KV20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1653-7KV20","canonicalUrl":"https://aoctrl.com/siemens/5SU1653-7KV20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1653-7KV20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1653-7KV20 FI/LS protector, Type A (PSE/SSF), 1+N-POL, C 20A, 300mA, 4.5kA, D=70mm.","salesMarkdown":"The Siemens 5SU1653-7KV20 is a combined residual-current and overcurrent protective device — an FI/LS protector — in a single 1+N-POL module. It carries a C-curve 20 A overcurrent trip, a 300 mA Type A residual-current sensing circuit, and a 4.5 kA short-circuit breaking capacity. The D=70 mm housing width matches standard Siemens modular devices for DIN-rail panels. Type A residual-current detection means it catches pulsating DC fault currents from single-phase rectifier loads (switched-mode supplies, LED drivers, variable-speed drives) in addition to sinusoidal AC faults. The 300 mA sensitivity is the standard for fire protection and general shock prevention in fixed installations — not the 30 mA personal-protection threshold, so this unit is sized for sub-distribution or equipment-level protection where the loop impedance and leakage profile allow a higher trip level.","metaTitle":"Siemens 5SU1653-7KV20 FI/LS protector Type A, 20A C, 300mA,","metaDescription":"Siemens 5SU1653-7KV20 FI/LS protector Type A (PSE/SSF), 1+N-POL C 20A, 300mA, 4.5kA. Lifecycle current. Sourced to order, RFQ for pricing and availability.","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=141482&mlfb=5SU1653-7KV20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1653-7KV20/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1653-7KV20 used for?","answer":"It is a combined RCD/MCB (FI/LS protector) rated C 20 A, 300 mA Type A, 4.5 kA, 1+N-POL, used in sub-distribution boards to provide both overcurrent and residual-current protection in a single 70 mm-wide module."},{"question":"Where can I buy the 5SU1653-7KV20?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1653-7KV20","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/5SU1653-7KV20 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}}