{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM9635-6KK","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM9635-6KK","canonicalUrl":"https://aoctrl.com/siemens/5SM9635-6KK","factsUrl":"https://aoctrl.com/api/mcp/products/5SM9635-6KK","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM9 series, RC unit electronic, 3-pole, type A, 63 A, 300 mA, 230/400 V AC, instantaneous design.","salesMarkdown":"The Siemens SENTRON 5SM9635-6KK is a 3-pole residual current unit (RC unit electronic) rated at 63 A with a 300 mA tripping threshold, designed for 230/400 V AC supply. The instantaneous design means it trips without a time delay, so it's suited for direct protection of circuits where selectivity against transient earth faults isn't required. It's part of the SENTRON 5SM9 family, which is the current-production RC unit platform from Siemens. ## Temperature derating The 63 A rating holds at 40 °C and 45 °C (58.59 A per the spec table), then begins to step down: 56.7 A at 50 °C, 54.81 A at 55 °C, 53.55 A at 60 °C, 52.29 A at 65 °C, and 50.4 A at 70 °C. If this unit lives in a non-air-conditioned panel near ovens, drives, or a sunny roof, the 50 °C or 55 °C row is the one that governs the real load — not the 63 A nameplate. A 48 A continuous load is fine; a 60 A heater bank needs a bigger unit or forced ventilation to keep the internal temperature below 40 °C. ## Panel integration The 5SM9 RC units snap onto DIN rail and occupy three modular width units. They pair mechanically with SENTRON 5SY MCBs to form a combined RCBO assembly.","metaTitle":"Siemens SENTRON 5SM9635-6KK RC Unit, 3-Pole, 63 A, 300 mA, T","metaDescription":"Siemens SENTRON 5SM9635-6KK RC unit electronic, 3-pole, type A, 63 A, 300 mA, 400 V AC. Current production. Available to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"at 40 Cel":"58.59 A","at 45 Cel":"58.59 A","at 50 Cel":"56.7 A","at 55 Cel":"54.81 A","at 60 Cel":"53.55 A","at 65 Cel":"52.29 A","at 70 Cel":"50.4 A","Rated Value":"50 Hz","Number of poles":"3","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"RC unit electronic","Design of the product":"Instantaneous","Type of fault current":"A","circuit-breaker / Design":"5SM9","Current / at AC / rated value":"63 A","Supply voltage / at AC / rated value":"230/400 V","Tripping residual current / rated value":"300 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1a587d2963f039ed8d5c504be5592bed.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629211&mlfb=5SM9635-6KK","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM9635-6KK/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM9635-6KK","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/5SM9635-6KK 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}}