{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1653-7KV40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1653-7KV40","canonicalUrl":"https://aoctrl.com/siemens/5SU1653-7KV40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1653-7KV40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1653-7KV40 FI/LS-PROTECTOR TYPE A (PSE/SSF), D=70MM IFN 300MA, 4.5KA, 1+N-POL C 40A.","salesMarkdown":"The Siemens 5SU1653-7KV40 is a combined residual-current device and miniature circuit breaker (RCBO), branded FI/LS-Protector Type A (PSE/SSF). It packs a 40 A C-curve thermal-magnetic trip with a 300 mA Type A residual-current sensing element into a 1+N-Pol module, rated for 4.5 kA breaking capacity. Type A detection means it catches pulsating DC fault currents as well as sinusoidal AC — essential on circuits feeding single-phase rectified loads like switched-mode power supplies or LED drivers. The 300 mA IΔn is a personnel-protection threshold; in many national wiring rules this rating is used for socket-outlet circuits in commercial or light-industrial installations where nuisance tripping from leakage currents must be balanced against shock-risk coverage.","metaTitle":"5SU1653-7KV40 Siemens FI/LS Protector Type A, 40A C, 300mA,","metaDescription":"Siemens 5SU1653-7KV40 FI/LS protector Type A (PSE/SSF), 1+N-Pol, C 40A, 300mA IΔn, 4.5kA breaking capacity. Current lifecycle stage. Available 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=325533&mlfb=5SU1653-7KV40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1653-7KV40/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1653-7KV40 used for?","answer":"It is a combined RCD/MCB (RCBO) that provides both overcurrent protection (C-curve, 40 A) and residual-current protection (Type A, 300 mA) in a single 1+N-Pol module, typically used in final sub-circuits of commercial or light-industrial distribution boards."},{"question":"Where can I buy the 5SU1653-7KV40?","answer":"The 5SU1653-7KV40 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/5SU1653-7KV40","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/5SU1653-7KV40 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}}