{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-0KV10","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-0KV10","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-0KV10","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-0KV10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1656-0KV10 FI/LS-protector, Type AC (WS), D=70mm, IΔN 300mA, 6kA, 1+N-pole, B-curve 10A.","salesMarkdown":"The Siemens 5SU1656-0KV10 is a combined residual-current device (RCD) and miniature circuit breaker (MCB), known as an FI/LS-protector. It combines Type AC earth-leakage detection with a 10 A B-curve overcurrent trip in a single 1+N-pole unit, rated for a 6 kA short-circuit capacity. The 300 mA residual sensitivity (IΔN) means it is sized for equipment or circuit protection rather than personnel shock protection — it will not trip on the small leakage currents a person might draw, making it suitable for circuits where nuisance tripping from capacitive or filter leakage is a concern. The B-curve (10 A) means the magnetic trip operates between 3× and 5× rated current (30–50 A), so it is a good fit for resistive and general-purpose loads — lighting, socket outlets, control transformers — where inrush is moderate. The 300 mA residual sensitivity places this unit in the Type AC category, meaning it detects sinusoidal AC earth faults only — not pulsating DC or smooth DC faults. For circuits with variable-speed drives, LED drivers, or other non-linear loads that can generate pulsating DC leakage, a Type A or Type F device would be needed instead. The 70 mm depth (D=70mm) is the dimension from the DIN-rail mounting surface to the front of the device — standard for Siemens 5SU series RCBOs. The 1+N-pole format means it switches the phase and opens the neutral, with the neutral pole not fused. In a typical domestic or light-commercial consumer unit, this unit occupies a single module width (about 18 mm per pole, so 2 modules for 1+N).","metaTitle":"Siemens 5SU1656-0KV10 FI/LS Protector, Type AC, 10A B-Curve,","metaDescription":"Siemens 5SU1656-0KV10 FI/LS protector, Type AC, 10A B-curve, 300mA, 6kA. Current lifecycle stage. Sourced to order against RFQ. Quoted on request.","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=491168&mlfb=5SU1656-0KV10","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-0KV10/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-0KV10","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/5SU1656-0KV10 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}}