{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV3746-5","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV3746-5","canonicalUrl":"https://aoctrl.com/siemens/5SV3746-5","factsUrl":"https://aoctrl.com/api/mcp/products/5SV3746-5","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SV3746-5, 4-pole Type B selective RCCB, 63 A rated current, 500 mA rated residual current, Un AC 400 V, DIN rail mount, IP20.","salesMarkdown":"The Siemens 5SV3746-5 is a 4-pole Type B selective residual current circuit breaker (RCCB) from the SENTRON family, rated 63 A and 500 mA residual sensitivity on a 400 V AC supply. The selective design means it incorporates a short-time delay so that, in a fault, the downstream RCCB trips first — only if the fault persists does this unit clear, keeping upstream circuits live. That discrimination is essential in a multi-level distribution board where you want the nearest device to the fault to open, not the main incomer. Type B detection covers AC, pulsating DC, and smooth DC residual currents up to 500 mA — the right choice for drives, UPS systems, and other loads that can generate DC fault currents a standard Type A RCCB would not see. Mounting position is unrestricted. Type B selective RCCBs are specified in commercial and industrial distribution boards where the supply feeds equipment that can produce smooth DC fault currents — variable-frequency drives, UPS systems, EV chargers, and medical imaging equipment. The selective time delay avoids nuisance tripping from transient earth faults and coordinates with downstream RCCBs so only the faulted branch opens. The 63 A rating covers sub-distribution or feeder circuits in a 400 V TN or TT system.","metaTitle":"Siemens 5SV3746-5 SENTRON RCCB, Type B selective, 63A 500mA","metaDescription":"Siemens 5SV3746-5 SENTRON RCCB, 4-pole, Type B selective, 63 A, 500 mA, Un AC 400 V. 10 kA SCCR, DIN rail mount. Active production. Quoted 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","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Grid Spacing":"60 mm","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":"SIGRES","Product Designation":"RCCB","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Selective","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 (top for SIGRES function also in switched-off state)","according to IEC 61008-1 rated value":"0.8 kA","Switching Function Short-Term Delayed":"No","Value Range Of The Operating Frequency":"50/60 Hz","value range of the supply voltage at AC":"70-440 V","Ambient Temperature During Storage Minimum":"-40 °C","Value Range Of The Supply Voltage Frequency":"50/60 Hz","Supply Voltage For Testing Equipment Minimum":"70 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","Short-Circuit Current Of Series Fuse Maximum Permissible":"100 A","for rated value of the current at AC in hot operating state per pole":"5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a5428b70392542232233e406e6d777ba.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=810573&mlfb=5SV3746-5","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SV3746-5/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SV3746-5 and get a price?","answer":"The 5SV3746-5 is sourced and quoted to order through independent distribution. Submit an RFQ; availability and current pricing are confirmed at quote time — no stock count or price figure is carried on this listing."},{"question":"What does Type B selective mean on this RCCB?","answer":"Type B detects AC, pulsating DC, and smooth DC residual currents — necessary where VFDs or UPS units are present. Selective means it has a short intentional delay so it coordinates with downstream RCCBs: the downstream device clears first, and only a persistent fault opens this unit, preserving supply to other circuits."},{"question":"What is the depth of the 5SV3746-5?","answer":"The depth is 70 mm, with an installation depth also listed as 70 mm — it fits standard SENTRON distribution boards and enclosures with that internal clearance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV3746-5","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/5SV3746-5 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}}