{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2825-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2825-8","canonicalUrl":"https://aoctrl.com/siemens/5SM2825-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2825-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RC unit for 5SY, 2-pole, Type A selective, In: 63 A, 1000 mA, Un AC: 230 V.","salesMarkdown":"The 63 A rated operating current sets the maximum continuous load this RC unit can carry — sized for a main incoming supply or a large sub-feed in a distribution board. The 1000 mA residual trip threshold is deliberately high: this is not for personal shock protection (which requires 30 mA), but for equipment protection against earth leakage currents that could cause fire or insulation degradation. The selective design means it withstands 5 kA surge current without tripping, so it sits upstream of standard RCDs and lets downstream units clear first — critical for maintaining supply to healthy circuits during a fault. Type A fault current sensitivity covers AC residual currents and pulsating DC — the kind produced by single-phase rectifiers in switched-mode power supplies, variable-speed drives, and LED drivers. If your panel feeds electronics or motor drives, Type A is the minimum; a standard AC-type RCD may not detect pulsating DC and could fail to trip. Snaps onto DIN rail (REG) and occupies 2 width units — 71 mm wide — in a standard distribution board. Depth is 70 mm, installation depth also 70 mm, so it sits flush with the MCB it pairs with.","metaTitle":"Siemens 5SM2825-8 SENTRON RC Unit, 63A 1000mA Type A Selecti","metaDescription":"Siemens SENTRON 5SM2825-8 RC unit for 5SY MCB, 2-pole, Type A selective, 63A, 1000mA, 230/400V AC. Active production. Quoted 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":"71 mm","title":"5SM2825-8","Maximum":"45 °C","Minimum":"-25 °C","Rated Value":"50 Hz","description":"RC unit for 5SY, 2-pole, type A, selective, In: 63 A, 1000 mA, Un AC: 230 V","Mounting type":"DIN rail (REG)","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"for 5SY","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product designation":"RC unit","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"230/400 V","Overvoltage category":"III","Design of the product":"Selective","Number of width units":"2","Type of fault current":"A","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Product feature / silicon-free":"Yes","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"top or bottom","Insulation voltage / rated value":"460 V","Protection against electrical shock":"Finger and back-of-hand safe","Surge current resistance / rated value":"5 kA","Operating current / at AC / rated value":"63 A","Switching function / short-term delayed":"No","Tripping residual current / rated value":"1 000 mA","Size of installation devices / acc. to DIN 43880":"1","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/782521ee9ab2f3652f15906c85b784a6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=186775&mlfb=5SM2825-8"},"ai":{"faq":[{"question":"What is the 5SM2825-8 used for?","answer":"It is a 2-pole residual current unit (RC unit) for the Siemens 5SY miniature circuit breaker, forming a combined RCD/MCB. It provides equipment protection against earth leakage at 1000 mA, with selective (time-delayed) tripping to coordinate with downstream RCDs."},{"question":"What does Type A selective mean on this RC unit?","answer":"Type A means it detects both AC residual currents and pulsating DC — the kind from rectifiers in electronics and drives. Selective means it has a short intentional delay so downstream RCDs trip first, preventing a whole-panel blackout on a transient fault."},{"question":"Where can I buy the 5SM2825-8?","answer":"This part is 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":"Will the 5SM2825-8 drop into a panel specified around the 5SL4363-7?","answer":"No — the 5SL4363-7 is a 3-pole miniature circuit breaker (MCB), not an RC unit. The 5SM2825-8 is a 2-pole residual current device designed to pair with a 5SY MCB. They serve different functions and have different footprints (2 width units vs 3)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2825-8","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/5SM2825-8 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}}