{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV3746-4","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV3746-4","canonicalUrl":"https://aoctrl.com/siemens/5SV3746-4","factsUrl":"https://aoctrl.com/api/mcp/products/5SV3746-4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, Type B, 4-pole, 63 A, 500 mA trip, short-time delayed, 10 kA SCCR, DIN rail mount, 4 MW, IP20.","salesMarkdown":"The Siemens 5SV3746-4 is a SENTRON residual current circuit breaker (RCCB) — a 4-pole, Type B device rated for 63 A continuous at 40 °C through 55 °C, with a 500 mA residual trip threshold. Type B means it detects AC, pulsating DC, smooth DC, and high-frequency residual currents, so it covers VFD-fed motor circuits, UPS feeds, and EV charging infrastructure where pure AC-sensing RCCBs would miss DC fault components. The short-time delayed design (SIGRES function) lets it ride through transient earth faults without nuisance tripping, which matters on circuits with surge arrestors or capacitive filters that dump a brief ground current on power-up. The supply can enter top or bottom; the SIGRES function stays powered even when switched off if fed from the top. IP20 with conductors connected, so it lives inside a distribution board, not exposed to washdown. ## Thermal derating and fault handling At 65 °C it derates to 55 A; at 70 °C it drops to 48 A. Short-circuit withstand is 10 kA per IEC 61008-1, with a let-through current limit of 7 000 A and an I²t of 60 000 A²·s. Surge current resistance is 3 kA; the impulse withstand per the standard is 0.8 kA. Overvoltage category III — suitable for fixed-installation distribution panels.","metaTitle":"Siemens 5SV3746-4 SENTRON RCCB, Type B, 63 A, 4-Pole, 500 mA","metaDescription":"Siemens 5SV3746-4 SENTRON RCCB, 4-pole, Type B, 63 A rated, 500 mA trip, 10 kA SCCR, short-time delayed. DIN rail mount. Current production. Sourced to order against RFQ.","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","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","at AC rated value":"63 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":"Short-time delayed","I2t value permissible":"60 000 A²·s","Residual Current Type":"B","at 40 °C rated value":"63 A","at 45 °C rated value":"63 A","at 50 °C rated value":"63 A","at 55 °C rated value":"63 A","at 60 °C rated value":"63 A","at 65 °C rated value":"55 A","at 70 °C rated value":"48 A","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)","Let-Through Current Permissible":"7 000 A","Tripping Fault Current Rated Value":"500 mA","Surge Current Resistance Rated Value":"3 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":"70-440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","Supply Voltage For Testing Equipment Minimum":"70 V","Mechanical Service Life (Switching 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=810572&mlfb=5SV3746-4","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SV3746-4/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 5SV3746-4 and a standard AC-type RCCB?","answer":"The 5SV3746-4 is Type B, meaning it detects AC, pulsating DC, smooth DC, and high-frequency residuals. A standard AC-type RCCB only sees sinusoidal AC leakage. For circuits with VFDs, UPS, or EV chargers, Type B is the correct choice — an AC-type will miss DC fault components and may not trip."},{"question":"What is the 5SV3746-4's rated residual tripping current?","answer":"500 mA. That is a higher threshold than the common 30 mA or 100 mA RCCBs — it is intended for equipment protection (fire prevention on distribution circuits) rather than direct personal shock protection."},{"question":"Where can I buy 5SV3746-4 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Does 5SV3746-4 drop into a panel designed for a standard 4-pole RCCB?","answer":"Yes. It occupies 4 modular width units (72 mm) on standard DIN rail, same footprint as any 4-pole 63 A RCCB. The supply can enter top or bottom. No special panel modifications needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV3746-4","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/5SV3746-4 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}}