{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1156-7KV10","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1156-7KV10","canonicalUrl":"https://aoctrl.com/siemens/5SU1156-7KV10","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1156-7KV10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1156-7KV10 FI/LS-protector Type A (PSE/SSF), 1+N-pole, C 10A, IΔn 10mA, 6kA breaking capacity, 70mm width.","salesMarkdown":"The Siemens 5SU1156-7KV10 is a combined residual-current device and miniature circuit breaker — an FI/LS-protector — in a single 1+N-pole module. It integrates Type A earth-leakage detection (sensitive to pulsating DC residual currents up to 10 mA) with a C-curve overcurrent trip set at 10 A, all within a 70 mm wide DIN-rail housing. The 10 mA residual sensitivity (IΔn) is the key differentiator here: it is far more sensitive than the typical 30 mA RCD used for socket-outlet protection. A 10 mA device is specified for circuits where even a small leakage current poses a risk — for example, in medical locations, wet areas, or circuits supplying equipment with low leakage tolerance. The Type A classification means it detects both sinusoidal AC residual currents and pulsating DC residuals, which covers most modern electronic loads (switched-mode power supplies, variable-speed drives, LED drivers) that generate half-wave fault currents. ## Deployment context The 1+N-pole format (switched phase plus switched neutral) is common in UK and European final-circuit installations where the neutral is isolated when the device trips, ensuring full disconnection.","metaTitle":"Siemens 5SU1156-7KV10 FI/LS Protector Type A, 10A C, 10mA, 6","metaDescription":"Siemens 5SU1156-7KV10 FI/LS-protector Type A (PSE/SSF), 1+N-pole C 10A, IΔn 10mA, 6kA breaking capacity. Current lifecycle stage. Sourced 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=271899&mlfb=5SU1156-7KV10","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1156-7KV10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SU1156-7KV10 and get a price?","answer":"This part is sourced to order against an RFQ through our Siemens franchise channel. Submit an RFQ for current pricing and availability confirmation — stock and price are confirmed at quote time."},{"question":"What does the 10 mA residual sensitivity mean for my application?","answer":"The 10 mA IΔn is a high-sensitivity setting intended for circuits where even small leakage currents must be detected — medical locations, wet environments, or equipment with low leakage tolerance. It is more sensitive than the standard 30 mA RCD used for general socket outlets."},{"question":"What is the breaking capacity of the 5SU1156-7KV10?","answer":"The device is rated for 6 kA breaking capacity per IEC/EN 61009, which is the standard short-circuit rating for final-circuit protection in most domestic and light commercial TN/TT distribution boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1156-7KV10","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/5SU1156-7KV10 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}}