{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3646-4","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3646-4","canonicalUrl":"https://aoctrl.com/siemens/5SM3646-4","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3646-4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 4-pole, type B, short-time delayed, 63 A, 300 mA, Un AC 400 V, 10 kA SCCR, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SM3646-4 is a 4-pole residual current circuit breaker (RCCB) — type B, short-time delayed — rated 63 A at 300 mA sensitivity on a 400 V AC supply at 50/60 Hz. The short-time delay (SIGRES function) lets it ride through nuisance trips from surge currents or brief inrush without dropping the circuit — useful on motor or capacitor bank feeds where a standard RCCB would false-trip. That figure is the withstand for the device itself; the downstream load's available fault current needs to stay under it. The 400 V AC rated voltage is line-to-line on a three-phase system, which is the standard European low-voltage distribution voltage. IP20 with connected conductors.","metaTitle":"Siemens SENTRON 5SM3646-4 RCCB, 4P, 63 A, 300 mA, Type B","metaDescription":"Siemens SENTRON 5SM3646-4 RCCB, 4-pole, type B, short-time delayed, 63 A, 300 mA, 400 V AC. Current lifecycle status. 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":{"Depth":"77 mm","Width":"72 mm","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Designation":"RCCB","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Short-time delayed","Product Feature Silicon-Free":"Yes","Short-Circuit Current Rating":"10 kA","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Top or bottom (bottom for SIGRES function also in switched-off state)","according to EN 60898 rated value":"0.8 kA","according to IEC 61008-1 rated value":"0.8 kA","Switching Function Short-Term Delayed":"Yes","Value Range Of The Operating Frequency":"50/60 Hz","value range of the supply voltage at AC":"400 V","Ambient Temperature During Storage Minimum":"-40 °C","Value Range Of The Supply Voltage Frequency":"50 Hz","Supply Voltage For Testing Equipment Minimum":"195 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","for rated value of the current at AC in hot operating state per pole":"2.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/180d00ea95dfcae0d68d8c945eb82b34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=326369&mlfb=5SM3646-4","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3646-4/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3646-4","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/5SM3646-4 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}}