{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2326-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2326-0","canonicalUrl":"https://aoctrl.com/siemens/5SM2326-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2326-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM2326-0 RCD-unit, instantaneous, AC type, 2-pole, 63 A at 40 °C, 30 mA rated fault current, 50 Hz, IP20.","salesMarkdown":"The 5SM2326-0 is a Siemens SENTRON residual-current device (RCD) designed as a companion unit for the 5SL4 series MCBs. It is a 2-pole, instantaneous-trip device rated for AC residual currents only — meaning it detects sinusoidal AC earth faults but not pulsating DC or smooth DC faults. The headline 63 A rating applies at 40 °C ambient. The derating curve is published: at 50 °C the continuous current drops to 56.7 A, at 60 °C to 53.55 A, and at 70 °C to 50.4 A. If the distribution board runs hot — say, a packed enclosure near a boiler or in a roof space — use the 50 °C or 60 °C figure for your load calculation, not the 40 °C number. Insulation voltage (Ui) is 460 V, and the unit withstands a 4 kV surge (overvoltage category III). Operating frequency is fixed at 50 Hz. Occupies 2 modular width units (MW) on a DIN rail. Fastening method is standard REG (regular) clip-on. Mounting position is any orientation. Depth is 70 mm, matching the 5SL4 MCBs it pairs with — the assembly sits flush in a distribution board without protruding beyond the MCB body. The IP20 rating is conditional: it applies only when the distribution board is installed and conductors are connected. During panel assembly or service, the live terminals are exposed — standard safe-working precautions apply.","metaTitle":"Siemens SENTRON 5SM2326-0 RCD Unit, 63 A, 30 mA, 2-Pole, AC","metaDescription":"Siemens SENTRON 5SM2326-0 RCD unit, 63 A rated, 30 mA trip, 2-pole, AC type, IP20. Active production, sourced to order against RFQ. Specifications: 70 mm depth, 50 Hz.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"70 mm","title":"5SM2326-0","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"No","description":"RC unit for 5SL4, 2-pole, type AC, In: 63 A, 30 mA, Un AC: 230 V","Design Of Pole":"2 poles","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"REG","Mounting Position":"any","at AC rated value":"63 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Variations":"for 5SL4","Degree Of Pollution":"2","Product Designation":"RCD-unit","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"instantaneous","Residual Current Type":"AC","at 40 °C rated value":"58.6 A","at 45 °C rated value":"58.59 A","at 50 °C rated value":"56.7 A","at 55 °C rated value":"54.81 A","at 60 °C rated value":"53.55 A","at 65 °C rated value":"52.29 A","at 70 °C rated value":"50.4 A","OFF-delay time adjustable":"No","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"top or bottom","Rated Fault Current Adjustable":"No","Protection Function False Tripping":"Yes","Tripping Fault Current Rated Value":"30 mA","insulation voltage (Ui) rated value":"460 V","Surge Voltage Resistance Rated Value":"4 000 V","Value Range Of The Operating Frequency":"50 Hz","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50 Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","for rated value of the current at AC in hot operating state per pole":"4.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f14933df990f43bc11ec59a670011604.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=225520&mlfb=5SM2326-0"},"ai":{"faq":[{"question":"What is the 5SM2326-0's depth?","answer":"70 mm, which matches the 5SL4 MCB series it is designed to pair with on a DIN-rail assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2326-0","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/5SM2326-0 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}}