{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV3444-8LA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV3444-8LA","canonicalUrl":"https://aoctrl.com/siemens/5SV3444-8LA","factsUrl":"https://aoctrl.com/api/mcp/products/5SV3444-8LA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON selective RCCB, 4-pole, Type A, 40 A rated current, 100 mA residual, 400 V AC, 10 kA SCCR, DIN rail mount.","salesMarkdown":"## Selective RCCB for 4-pole 400 V AC circuits The Siemens 5SV3444-8LA is a 4-pole selective residual current circuit breaker (RCCB) from the SENTRON series, rated 40 A with a 100 mA residual operating current for 400 V AC systems at 50/60 Hz. The selective design (Type S) means it incorporates a short time delay so that downstream RCCBs trip first during a ground fault, keeping this unit as the backup — critical for maintaining supply to upstream loads in a distribution board where you want only the faulted branch isolated. The 4-pole configuration handles three-phase plus neutral, so it fits three-phase 400 V distribution where all live conductors need residual protection. Depth is 70 mm, installation depth also 70 mm. Supply connection can be top or bottom, giving flexibility in busbar routing. 40 A rated current at 400 V AC. The 100 mA residual sensitivity is for equipment protection or as a time-delayed upstream RCCB. The selective characteristic coordinates with downstream RCCBs. Mechanical service life of 10,000 operating cycles typical. Ambient temperature range -25 °C to +45 °C operating, -40 °C storage. Silicon-free construction for applications sensitive to silicone outgassing (e.g., paint shops, electronics assembly).","metaTitle":"Siemens 5SV3444-8LA SENTRON RCCB, 4-pole, 40 A, 100 mA, sele","metaDescription":"Siemens SENTRON 5SV3444-8LA 4-pole selective RCCB, Type A, 40 A, 100 mA, 400 V AC, 10 kA SCCR. Active 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","title":"5SV3444-8LA","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","description":"Residual current operated circuit breaker, 4-pole, Type A, selective, In: 40 A, 100 mA, Un AC: 400 V, with thermal overload protection","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":"With thermal overload protection","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","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":"230/400 V","Ambient Temperature During Storage Minimum":"-40 °C","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":"100 A","for rated value of the current at AC in hot operating state per pole":"1.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/530f9cd380e25e78cfdd21d81d643e98.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=683214&mlfb=5SV3444-8LA"},"ai":{"faq":[{"question":"What is 5SV3444-8LA's listed depth?","answer":"The 5SV3444-8LA has a depth of 70 mm and an installation depth of 70 mm, fitting standard distribution boards with 70 mm mounting depth."},{"question":"What is 5SV3444-8LA's listed width?","answer":"The 5SV3444-8LA is 72 mm wide, occupying 4 modular width units at 60 mm grid spacing on DIN rail."},{"question":"Will 5SV3444-8LA drop into a panel specified around 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole miniature circuit breaker (MCB) at 54 mm wide, while the 5SV3444-8LA is a 4-pole RCCB at 72 mm wide. They serve different functions (overcurrent vs. residual current protection) and have different pole counts and widths, so a direct swap without rewiring and panel rework is not possible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV3444-8LA","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/5SV3444-8LA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}