{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1156-0KV13","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1156-0KV13","canonicalUrl":"https://aoctrl.com/siemens/5SU1156-0KV13","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1156-0KV13","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1156-0KV13 FI/LS protector, Type AC (WS), 70mm width, IΔN 10mA, 6kA, 1+N-pole, B-curve 13A.","salesMarkdown":"The Siemens 5SU1156-0KV13 is a combined residual-current device and miniature circuit breaker (RCBO) — often called an FI/LS protector in European panel practice. It packs Type AC earth-leakage detection and overcurrent protection into a single 1+N-pole unit, saving a DIN-rail slot compared to separate RCD and MCB. The 10 mA IΔN (rated residual operating current) is the sensitive end of the Type AC range — it trips on sinusoidal AC fault currents down to that threshold. That makes it a fit for circuits where a higher 30 mA trip would leave a hazardous touch-voltage exposure, like lighting circuits in wet areas or certain medical locations. The B-curve 13 A thermal-magnetic characteristic means the magnetic trip operates at 3 to 5 times rated current (39–65 A), so it clears fast on a hard short but tolerates the inrush of resistive and modestly inductive loads like lighting banks or small control transformers. It's not sized for motor-starting surges — those need a C or D curve. ## Where it goes in the panel The 70 mm width (4 module spaces) clips onto standard DIN rail. The 1+N-pole configuration switches and protects the phase conductor only; the neutral is switched through the RCD element but not overcurrent-protected.","metaTitle":"Siemens 5SU1156-0KV13 FI/LS Protector, Type AC, 10mA, 6kA, B","metaDescription":"Siemens 5SU1156-0KV13 FI/LS protector, Type AC (WS), 10mA IΔN, 6kA breaking capacity, 1+N-pole, B-curve 13A. Current production. Sourced to order. Request quote.","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=359470&mlfb=5SU1156-0KV13","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1156-0KV13/alternatives.json"},"ai":{"faq":[{"question":"What does the Type AC (WS) designation mean?","answer":"Type AC means the device detects sinusoidal AC residual currents only — it will not trip on pulsed DC or smooth DC fault currents. The (WS) suffix indicates a wire-free or screwless terminal design on the line side, common in European distribution boards for faster wiring."},{"question":"Where can I buy the 5SU1156-0KV13 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote — availability and current pricing are confirmed at quote time, not on a static listing."},{"question":"What is the breaking capacity and what does it mean for my panel?","answer":"The 6 kA breaking capacity (Icn) is the maximum prospective short-circuit current the device can safely interrupt. For a final sub-distribution board fed from a transformer with limited fault current, 6 kA is standard — but verify the prospective fault current at the installation point doesn't exceed it, or you'll need an upstream current-limiting device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1156-0KV13","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/5SU1156-0KV13 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}}