{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1624-8RC63","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1624-8RC63","canonicalUrl":"https://aoctrl.com/siemens/5SU1624-8RC63","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1624-8RC63","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1624-8RC63 RCBO, 63 A, 2-pole, 4-module, D characteristic, Type A 300mA residual current protection.","salesMarkdown":"The Siemens 5SU1624-8RC63 is a combined residual current device and miniature circuit breaker (RCBO) rated 63 A, 2-pole, in a 4-module DIN-rail housing. It carries a D tripping characteristic for high-inrush loads and Type A 300 mA residual current protection, covering pulsating DC fault currents that a standard Type AC device would miss. The 63 A rating and D curve are sized for motor and transformer branch circuits where starting inrush can exceed 10× the full-load current without nuisance tripping. Type A 300 mA residual sensitivity catches pulsating DC faults from single-phase rectifiers, VFD front ends, or switched-mode supplies — common on modern industrial control panels where standard Type AC RCDs would not detect the fault. The 2-pole, 4-module footprint occupies two adjacent DIN positions in a sub-distribution board.","metaTitle":"Siemens 5SU1624-8RC63 RCBO 63A 2-pole D curve Type A 300mA","metaDescription":"Siemens 5SU1624-8RC63 RCBO, 63 A, 2-pole, 4-module, D characteristic, Type A 300mA. 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/371240543a6911d351e4155b82a7b2e7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=402666&mlfb=5SU1624-8RC63","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1624-8RC63/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SU1624-8RC63?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What does the Type A 300 mA rating mean for this RCBO?","answer":"Type A residual current detection covers pulsating DC fault currents — the kind produced by single-phase rectifiers, VFD input stages, and switched-mode power supplies — which a standard Type AC device cannot detect. The 300 mA sensitivity is typical for general industrial sub-circuits where earth leakage from connected equipment is expected but a fault must still be cleared."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1624-8RC63","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/5SU1624-8RC63 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}}