{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2623-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2623-6","canonicalUrl":"https://aoctrl.com/siemens/5SM2623-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2623-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCD-unit, 2-pole, Type A, In: 40 A, 300 mA, Un AC: 230 V, 50 Hz, 2 MW, IP20, instantaneous.","salesMarkdown":"The Siemens SENTRON 5SM2623-6 is a 2-pole residual current device (RCD unit) rated 40 A, 300 mA fault current, Type A, for 230 V AC at 50 Hz. It is an instantaneous-trip design — no adjustable delay — intended for use with the 5SL4 series MCB to form an RCBO combination in a distribution board. Rated at 40 A continuous and 300 mA residual trip threshold, Type A detects pulsating DC fault currents as well as sinusoidal AC — required on circuits feeding single-phase rectified loads (switch-mode supplies, variable-speed drives, LED drivers). The 230 V AC / 50 Hz supply voltage is fixed; the unit is not rated for 60 Hz or mixed-frequency networks. ## Installation and environmental limits Mounts on DIN rail (REG fastening method) in any orientation. IP20 protection applies only when the distribution board is installed and conductors are connected — not a standalone outdoor rating. The 2 MW width (36 mm per module) occupies two adjacent slots in a standard 18 mm pitch enclosure. Sealable? No — the test button and reset are accessible without a seal cap.","metaTitle":"Siemens SENTRON 5SM2623-6 RCD Unit, 2-pole, 40 A, 300 mA, 23","metaDescription":"Siemens SENTRON 5SM2623-6 RCD unit, 2-pole, Type A, 40 A, 300 mA, 230 V AC. Active production. Sourced to order against RFQ. Depth 70 mm, 2 MW.","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":"5SM2623-6","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Sealable":"No","description":"RC unit for 5SL4, 2-pole, type A, In: 40 A, 300 mA, Un AC: 230 V","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"REG","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","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","OFF-delay time adjustable":"No","Number Of Modular Width Units":"2","Rated Fault Current Adjustable":"No","Protection Function False Tripping":"Yes","insulation voltage (Ui) rated value":"460 V","Surge Voltage Resistance Rated Value":"4 000 V","Value Range Of The Operating Frequency":"50 Hz","Value Range Of The Supply Voltage Frequency":"50 Hz","Supply Voltage For Testing Equipment Minimum":"195 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","for rated value of the current at AC in hot operating state per pole":"1.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c120164300e17a9be9cb5f4259b3b7f6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=146976&mlfb=5SM2623-6"},"ai":{"faq":[{"question":"What is the 5SM2623-6 used for?","answer":"It is a residual current device (RCD) for 2-pole, 230 V AC, 50 Hz circuits. Combined with a 5SL4 series MCB it forms an RCBO providing both overcurrent and earth-fault protection in a distribution board."},{"question":"Where can I buy the 5SM2623-6?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will the 5SM2623-6 drop into a panel specified around the 5SU9354-7KK16?","answer":"Not without rewiring. The 5SM2623-6 is a bare RCD unit (2 MW, 70 mm depth) while the 5SU9354-7KK16 is an RCBO (1P+N, 36 mm width, 77 mm depth) with integral overcurrent protection. The footprint differs, and the 5SU9354-7KK16 includes a neutral pole and a C-curve MCB — the 5SM2623-6 does not."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2623-6","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/5SM2623-6 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}}