{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1344-7RC40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1344-7RC40","canonicalUrl":"https://aoctrl.com/siemens/5SU1344-7RC40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1344-7RC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1344-7RC40 RCBO, 40 A, 4-pole, 7 modules, C characteristic, Type A, 30 mA.","salesMarkdown":"The Siemens 5SU1344-7RC40 is a 4-pole RCBO rated at 40 A with C-curve tripping and Type A 30 mA residual current protection, packaged in a 7-module width for DIN-rail mounting in final distribution boards. ## What the ratings mean for fit The 40 A thermal-magnetic C-curve handles moderate inrush from motor or lighting loads without nuisance tripping, while the 30 mA Type A residual element catches pulsating DC fault currents common on electronics-fed circuits — a standard spec for mixed-load final subcircuits in commercial and light industrial panels. At 7 modules wide, it consolidates four poles of overcurrent and earth-leakage protection in one unit.","metaTitle":"Siemens 5SU1344-7RC40 RCBO 40A 4-pole C-curve Type A 30mA","metaDescription":"Siemens 5SU1344-7RC40 RCBO, 40 A, 4-pole, 7 modules, C characteristic, Type A, 30 mA. Current production. Quoted 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":"https://cdn.aoctrl.com/6e2e6ddacb60a42cb10c149ae3a30b8e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=425445&mlfb=5SU1344-7RC40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1344-7RC40/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SU1344-7RC40's rated current and residual sensitivity?","answer":"It is a 40 A, 4-pole RCBO with C-curve tripping and Type A 30 mA residual current protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1344-7RC40","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/5SU1344-7RC40 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}}