{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3648-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3648-0","canonicalUrl":"https://aoctrl.com/siemens/5SM3648-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3648-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3648-0, 4-pole RCCB, type AC, rated 100 A at 400 V AC, 300 mA residual trip, 10 kA SCCR, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SM3648-0 is a 4-pole residual current operated circuit breaker (RCCB), type AC, rated 100 A at 400 V AC with a 300 mA trip threshold. It's an instantaneous-trip device — no intentional delay, so it clears a ground fault as fast as the waveform lets it. That's the number that governs selectivity coordination in a distribution board. Snaps onto DIN rail (REG profile), 4 modular width units wide, 70 mm installation depth. Mount in any position — no derating for orientation. Supply can land top or bottom; the device is polarity-insensitive for the residual current sense. IP20 with the distribution board installed and conductors connected — treat it as a panel-internal device, not for wet locations. ## Thermal limits and power loss Rated operating ambient -5 °C to 45 °C. Storage range is wider: -40 °C to 75 °C — that's the handling limit, not the running limit. Each pole dissipates 8.9 W at rated current in hot operating state, so a 4-pole block pushes about 35.6 W into the enclosure.","metaTitle":"Siemens SENTRON 5SM3648-0 RCCB, 4-pole, 100 A, 300 mA, 400 V","metaDescription":"Siemens SENTRON 5SM3648-0 4-pole RCCB, type AC, rated 100 A at 400 V AC, 300 mA trip, 10 kA SCCR. DIN rail mount, 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":{"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":"Instantaneous","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","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=73291&mlfb=5SM3648-0","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3648-0/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SM3648-0 used for?","answer":"It's a 4-pole residual current circuit breaker (RCCB) for AC systems up to 400 V, rated 100 A with a 300 mA trip. Use it for ground-fault protection on three-phase loads — distribution boards, sub-mains, or feeder circuits where you need personnel and equipment protection against leakage to earth."},{"question":"Where can I buy the 5SM3648-0?","answer":"Sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3648-0","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/5SM3648-0 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}}