{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3748-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3748-6","canonicalUrl":"https://aoctrl.com/siemens/5SM3748-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3748-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3748-6, 4-pole Type A RCCB, 100 A rated, 500 mA trip, 400 V AC, 10 kA SCCR, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SM3748-6 is a 4-pole residual current circuit breaker (RCCB), Type A, rated at 100 A with a 500 mA trip threshold on a 400 V AC, 50 Hz supply. It carries a 10 kA short-circuit current rating per IEC 61008-1 and a 1 kA rating per EN 60898 — the lower figure governs selectivity with downstream MCBs in a residential or commercial distribution board. The 500 mA trip suits it for fire-protection or equipment-protection duty rather than personal shock protection (which typically requires 30 mA or lower). Mounting position is unrestricted — horizontal, vertical, or inverted — which simplifies layout in a crowded enclosure. IP20 rating applies once installed with conductors connected; the distribution board itself provides the enclosure seal.","metaTitle":"Siemens 5SM3748-6 SENTRON RCCB, 4P, Type A, 100 A, 500 mA","metaDescription":"Siemens 5SM3748-6 SENTRON 4-pole RCCB, Type A, 100 A rated, 500 mA trip, 400 V AC, 10 kA SCCR. Current lifecycle. Quoted on request.","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","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product Designation":"RCCB","at AC / rated value":"100 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":"A","Short-Circuit Current Rating":"10 kA","Number Of Modular Width Units":"4","Product Feature / Silicon-Free":"Yes","Position / Of Power Supply Cord":"top or bottom","according to EN 60898 / rated value":"1 kA","Tripping Fault Current / Rated Value":"500 mA","Surge Current Resistance / Rated Value":"1 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":"100 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"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=391310&mlfb=5SM3748-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3748-6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SM3748-6?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of 5SM3748-6?","answer":"4-pole Type A RCCB, 100 A rated current, 500 mA residual trip, 400 V AC at 50 Hz, 10 kA SCCR per IEC 61008-1, 1 kA per EN 60898."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3748-6","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/5SM3748-6 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}}