{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-6KV25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-6KV25","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-6KV25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-6KV25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1356-6KV25 FI/LS-PROTECTOR TYPE A (PSE/SSF), D=70MM IFN 30MA, 6KA, 1+N-POLE B 25A.","salesMarkdown":"The Siemens 5SU1356-6KV25 is a combined residual current device and miniature circuit breaker (RCBO) — an FI/LS protector in Siemens' own naming. It's a Type A unit rated at 30 mA earth leakage sensitivity and 6 kA breaking capacity, with a 1+N-pole form factor and a B-curve 25 A overcurrent trip. The 'PSE/SSF' marking indicates it meets the Swedish PSE and Swiss SSF utility requirements, so it's already cleared for those national grids. Type A detection means this RCBO trips on AC sinusoidal residual currents plus pulsating DC residuals — the kind a half-wave rectifier load (like a washing machine or a single-phase VFD) can produce. The B-curve (3-5 In) means it holds through inrush from resistive and small motor loads but trips fast on a hard short. ## Panel integration The 70 mm depth (D=70MM) is the dimension from the DIN-rail mounting plane to the front of the housing — standard for Siemens 5SU series RCBOs. The neutral is switched and protected internally, so no separate neutral bar connection is needed downstream.","metaTitle":"Siemens 5SU1356-6KV25 FI/LS Protector, Type A, 30mA, 6kA, B","metaDescription":"Siemens 5SU1356-6KV25 FI/LS protector Type A (PSE/SSF), 30mA, 6kA, 1+N-pole B 25A. 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=247730&mlfb=5SU1356-6KV25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-6KV25/alternatives.json"},"ai":{"faq":[{"question":"What is 5SU1356-6KV25's rated breaking capacity and sensitivity?","answer":"It is rated at 6 kA breaking capacity (Icn) with a 30 mA residual current sensitivity (IΔn), Type A, B-curve 25 A overcurrent trip, 1+N-pole."},{"question":"Where can I buy 5SU1356-6KV25?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-6KV25","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/5SU1356-6KV25 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}}