{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV3742-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV3742-6","canonicalUrl":"https://aoctrl.com/siemens/5SV3742-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SV3742-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SV3742-6 RCCB, 4-pole, 25 A rated, 500 mA trip, Type A, 10 kA SCCR, 230/400 V AC, DIN rail mount.","salesMarkdown":"## What it is and what it does The Siemens SENTRON 5SV3742-6 is a 4-pole residual current circuit breaker (RCCB) rated for 25 A at AC and a tripping fault current of 500 mA, Type A. It's designed to detect sinusoidal AC residual currents plus pulsating DC residual currents up to 500 mA, which covers most modern electronic loads like variable-speed drives, switched-mode power supplies, and lighting ballasts. The 10 kA short-circuit current rating (SCCR) means it can safely interrupt fault currents up to 10 kA without welding its contacts or cascading failure upstream — important for coordination in a distribution board. ## Where it fits Mounts on a standard DIN rail (REG) in any position, occupying 4 modular width units (72 mm wide). The 70 mm depth fits standard distribution boards with a grid spacing of 60 mm. Supply can come from top or bottom, and the IP20 rating applies once the distribution board is installed with connected conductors — meaning it's protected against solid objects larger than 12 mm, but not against water ingress, so it belongs inside a panel, not in a wet location.","metaTitle":"Siemens SENTRON 5SV3742-6 RCCB, 25 A, 500 mA, Type A, 4-Pole","metaDescription":"Siemens SENTRON 5SV3742-6 RCCB, 25 A rated, 500 mA trip, Type A, 4-pole, 10 kA SCCR, 230/400 V AC, DIN rail mount, IP20. Active production, sourced 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","at AC rated value":"25 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","I2t value permissible":"58 000 A²·s","Residual Current Type":"A","at 40 °C rated value":"25 A","at 45 °C rated value":"25 A","at 50 °C rated value":"25 A","at 55 °C rated value":"25 A","at 60 °C rated value":"25 A","at 65 °C rated value":"25 A","at 70 °C rated value":"25 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","Let-Through Current Permissible":"5 200 A","Tripping Fault Current Rated Value":"500 mA","Surge Current Resistance Rated Value":"1 kA","according to IEC 61008-1 rated value":"0.8 kA","Switching Function Short-Term Delayed":"No","Value Range Of The Operating Frequency":"50 Hz","value range of the supply voltage at AC":"230/400 V","Value Range Of The Supply Voltage Frequency":"50 Hz","Supply Voltage For Testing Equipment Minimum":"100 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","Short-Circuit Current Of Series Fuse Maximum Permissible":"80 A","for rated value of the current at AC in hot operating state per pole":"0.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$85.70","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=433321&mlfb=5SV3742-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SV3742-6/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to know for fit?","answer":"Rated current 25 A at AC, tripping fault current 500 mA, Type A (AC + pulsating DC), 4-pole, supply voltage 230/400 V AC, short-circuit current rating 10 kA, and it occupies 4 modular width units (72 mm) on a DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV3742-6","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/5SV3742-6 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}}