{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1653-0KV32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1653-0KV32","canonicalUrl":"https://aoctrl.com/siemens/5SU1653-0KV32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1653-0KV32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1653-0KV32 FI/LS protector, Type AC (WS), D=70mm, IΔn 300mA, 4.5kA, 1+N-pole, B 32A.","salesMarkdown":"The Siemens 5SU1653-0KV32 is an FI/LS combination device — a residual-current circuit breaker (RCD) and miniature circuit breaker (MCB) in one 1+N-pole unit, saving a DIN-rail position over separate devices. The 300 mA IΔn (rated residual operating current) is the trip threshold for earth leakage — higher than the 30 mA used for personal shock protection, so this unit is sized for equipment and fire protection rather than direct human contact. The B-curve 32 A overcurrent characteristic trips instantaneously at 3–5× rated current (96–160 A), suited for resistive and moderate inductive loads like lighting banks and small motor circuits. ## Integration notes The 70 mm depth (D=70MM) is the dimension from the DIN-rail mounting surface to the front of the device — check enclosure depth clearance, especially in shallow gland-plate or back-panel layouts. Spring-cage or screw terminals accept 1.5–25 mm² conductors depending on the terminal design; verify the specific terminal range on the device label before terminating.","metaTitle":"Siemens 5SU1653-0KV32 FI/LS Protector, Type AC, 32A B, 300mA","metaDescription":"Siemens 5SU1653-0KV32 FI/LS protector, Type AC, 32A B-curve, 300mA IΔn, 4.5kA breaking capacity. Lifecycle current. 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=11916&mlfb=5SU1653-0KV32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1653-0KV32/alternatives.json"},"ai":{"faq":[{"question":"What does Type AC (WS) mean on this FI/LS protector?","answer":"Type AC (WS) means the residual current detection responds only to sinusoidal AC fault currents. It is the standard type for general circuits without electronic loads that might generate pulsed or smooth DC leakage."},{"question":"Where can I buy the 5SU1653-0KV32 and get current pricing?","answer":"The 5SU1653-0KV32 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1653-0KV32","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/5SU1653-0KV32 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}}