{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3648-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3648-2","canonicalUrl":"https://aoctrl.com/siemens/5SM3648-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3648-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3648-2, selective RCCB, 4-pole, type AC, In: 100 A, IΔn: 300 mA, Un AC: 400 V, 10 kA SCCR, DIN rail mount.","salesMarkdown":"The Siemens 5SM3648-2 is a SENTRON selective residual current operated circuit breaker (RCCB), 4-pole, type AC, rated at 100 A with a 300 mA tripping fault current for 400 V AC 50 Hz systems. Its selective design (short-time delayed) means it coordinates with downstream RCCBs — during a ground fault, this unit stays in until the downstream device clears, keeping upstream circuits live. Mount in any position; no derating for orientation. ## Thermal limits and power loss","metaTitle":"Siemens 5SM3648-2 SENTRON RCCB, 4P, 100 A, 300 mA, Selective","metaDescription":"Siemens 5SM3648-2 SENTRON selective RCCB, 4-pole, 100 A rated, 300 mA trip, 400 V AC, 10 kA SCCR. Current lifecycle stage. 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":{"Maximum":"45 °C","Minimum":"-5 °C","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","at AC rated value":"100 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product Designation":"RCCB","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Selective","Residual Current Type":"AC","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","according to EN 60898 rated value":"1 kA","Tripping Fault Current Rated Value":"300 mA","Surge Current Resistance Rated Value":"5 kA","according to IEC 61008-1 rated value":"1 kA","Switching Function Short-Term Delayed":"No","Value Range Of The Operating Frequency":"50 Hz","value range of the supply voltage at AC":"400 V","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":"8.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=326719&mlfb=5SM3648-2","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3648-2/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 5SM3648-2 and a standard RCCB?","answer":"The 5SM3648-2 is a selective (time-delayed) RCCB, meaning it has a deliberate delay before tripping on a ground fault. This allows a downstream RCCB to clear first, so only the faulted branch drops out — the upstream supply stays live. Standard RCCBs trip immediately."},{"question":"Where can I buy 5SM3648-2?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the maximum ambient temperature for 5SM3648-2?","answer":"Maximum ambient operating temperature is 45 °C; storage maximum is 75 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3648-2","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/5SM3648-2 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}}