{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1156-6KV10","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1156-6KV10","canonicalUrl":"https://aoctrl.com/siemens/5SU1156-6KV10","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1156-6KV10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1156-6KV10 FI/LS protector, Type A (PSE/SSF), D=70mm, IΔN 10mA, 6kA, 1+N-pole, B-curve 10A.","salesMarkdown":"The Siemens 5SU1156-6KV10 is a combined residual-current and miniature circuit breaker — an FI/LS protector — in a single 1+N-pole module. It pairs a Type A residual-current device (RCD) with 10 mA sensitivity and a B-curve MCB rated at 10 A, all in a 70 mm wide housing. Breaking capacity is 6 kA. This is a current-production part. The 10 mA trip sensitivity (IΔN) is the key spec here: it's below the standard 30 mA used for general socket-outlet protection. A 10 mA RCD is specified for circuits where even a small leakage current poses a risk — think medical equipment in a patient vicinity, or a wet-area final subcircuit where the body path resistance is low. The Type A designation means it detects pulsating DC residual currents as well as sinusoidal AC, which matters for loads with half-wave rectification like washing machines, LED drivers, or some VFD-fed pumps. The B-curve 10 A MCB trips magnetically between 3 and 5 times rated current (30–50 A), so it's suited for resistive or lightly inductive loads — lighting, small control transformers, or general-purpose socket outlets where inrush is modest. The 70 mm width (roughly 4 module spaces) is wider than a single MCB because the RCD and MCB functions are integrated in one housing — saves space over two separate devices.","metaTitle":"Siemens 5SU1156-6KV10 FI/LS Protector, Type A, 10A B-Curve,","metaDescription":"Siemens 5SU1156-6KV10 FI/LS protector, Type A (PSE/SSF), 1+N-pole, B-curve 10A, 10mA sensitivity, 6kA. Currently in production. Available 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=204831&mlfb=5SU1156-6KV10","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1156-6KV10/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1156-6KV10 used for?","answer":"It's a combined RCD/MCB (FI/LS protector) for final subcircuits requiring both overcurrent and 10 mA earth-leakage protection, such as medical rooms or wet areas."},{"question":"Where can I buy the 5SU1156-6KV10?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1156-6KV10","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/5SU1156-6KV10 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}}