{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV4644-0KL","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV4644-0KL","canonicalUrl":"https://aoctrl.com/siemens/5SV4644-0KL","factsUrl":"https://aoctrl.com/api/mcp/products/5SV4644-0KL","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 4-pole, 40 A, 300 mA, Type AC, instantaneous, DIN rail, 70 mm depth, 72 mm width, 90 mm height.","salesMarkdown":"The 5SV4644-0KL: Rated 40 A at 40 °C, with a published derating curve: 38.1 A at 45 °C, stepping down to 17.6 A at 70 °C. The 300 mA trip threshold suits it for general-purpose earth-leakage protection in distribution boards — not for personnel protection (30 mA) or fire-prevention (300 mA is borderline). Snaps onto DIN rail (REG), occupies 4 modular-width units, and can be fed from top or bottom. IP20 with conductors connected — intended for enclosed distribution boards, not open-panel washdown areas. ## Fault-current ratings and selectivity Short-circuit current rating (SCCR) is 10 kA per the main spec; the conditional rating per EN 60898 and IEC 61008-1 is 0.8 kA. That 0.8 kA figure governs coordination with the upstream protective device — the RCCB itself is not a short-circuit interruption device, so the upstream MCB or fuse must clear faults above that level. Permissible let-through energy (I²t) is 58,000 A²·s; permissible let-through current is 5,200 kA — these bound the thermal and magnetic stress the device can withstand during a fault before the upstream protector opens. ## Temperature and environment Operating ambient -25 °C to 45 °C; storage -40 °C to 75 °C. Overvoltage category III, pollution degree unspecified but typical for distribution-board installation. Silicon-free construction. Lifecycle status is 'current' — this is an active-production part.","metaTitle":"Siemens 5SV4644-0KL SENTRON RCCB, 4P, 40 A, 300 mA, Type AC","metaDescription":"Siemens SENTRON 5SV4644-0KL RCCB, 4-pole, 40 A rated, 300 mA residual current, Type AC, instantaneous. Current production. DIN rail mount. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"72 mm","title":"5SV4644-0KL","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","description":"Residual current operated circuit breaker, 4-pole, Type AC, In: 40 A, 300 mA, Un AC: 400 V, N left","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Variations":"N left","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Operating Frequency":"50 Hz","Product Designation":"RCCB","at AC / rated value":"40 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"AC","I2t value / permissible":"58 000 A²·s","at 40 °C / rated value":"40 A","at 45 °C / rated value":"38.1 A","at 50 °C / rated value":"35.59 A","at 55 °C / rated value":"32.29 A","at 60 °C / rated value":"28.19 A","at 65 °C / rated value":"23.3 A","at 70 °C / rated value":"17.6 A","Short-Circuit Current Rating":"10 kA","Number Of Modular Width Units":"4","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"0.8 kA","For Testing Equipment / Minimum":"100 V","Position / Of Power Supply Cord":"top or bottom","Let-Through Current / Permissible":"5 200 kA","Tripping Fault Current / Rated Value":"300 mA","Supply Voltage Frequency / Rated Value":"50 Hz","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"No","size of installation devices / acc. to DIN 43880":"1","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b260ec24c4daba9a892f9380d9be50ba.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=412205&mlfb=5SV4644-0KL"},"ai":{"faq":[{"question":"What is 5SV4644-0KL's listed depth?","answer":"The depth is 70 mm (installation depth also 70 mm). Width is 72 mm, height is 90 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV4644-0KL","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/5SV4644-0KL 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}}