{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1444-2RC32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1444-2RC32","canonicalUrl":"https://aoctrl.com/siemens/5SU1444-2RC32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1444-2RC32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1444-2RC32, RCBO, 32 A, 4-pole, 8 modules, D characteristic, Type AC, 100 mA residual current.","salesMarkdown":"The Siemens 5SU1444-2RC32 is a 4-pole RCBO rated at 32 A with a D tripping characteristic and 100 mA Type AC residual current protection, occupying 8 module widths on a DIN rail. The 100 mA residual sensitivity (Type AC) covers sinusoidal AC earth faults only, not pulsating DC or smooth DC; that's standard for general-purpose socket-outlet and lighting circuits in commercial or light industrial panels, but not for EV charging or variable-speed drive outputs where DC fault components may appear. ## Deployment context The D characteristic and 100 mA residual make it a fit for motor feeder circuits in industrial control panels where the upstream protective device must coordinate with downstream contactors and overloads — not for final sub-circuits feeding hand-held equipment, which typically call for 30 mA RCD protection.","metaTitle":"Siemens 5SU1444-2RC32 RCBO 32A 4-pole D curve 100mA","metaDescription":"Siemens 5SU1444-2RC32 RCBO, 32 A, 4-pole, 8 modules, D characteristic, Type AC, 100 mA residual. Current-production 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":{"title":"5SU1444-2RC32","description":"RCBO 32 A 4-pole 8 modules D characteristic Type AC 100mA","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e6bd76b9bc8121a57e98e46db7b37c84.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=18314&mlfb=5SU1444-2RC32"},"ai":{"faq":[{"question":"What is the 5SU1444-2RC32 used for?","answer":"It is a 32 A, 4-pole RCBO with D characteristic and 100 mA Type AC residual protection, used to combine overcurrent and earth-fault protection in a single DIN-rail device for motor, transformer, or high-inrush load circuits."},{"question":"Where can I buy the 5SU1444-2RC32?","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":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1444-2RC32","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/5SU1444-2RC32 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}