{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2626-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2626-2","canonicalUrl":"https://aoctrl.com/siemens/5SM2626-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2626-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM2626-2 selective RC unit, 2-pole, 63 A rated current, 300 mA AC fault current, 230/400 V, DIN rail mount, IP20.","salesMarkdown":"## Selective RC unit for the 5SL4 line The Siemens 5SM2626-2 is a selective residual current unit (RC unit) from the SENTRON family, designed for use with the 5SL4 miniature circuit breaker series. It provides a 300 mA AC fault-current trip threshold at a rated current of 63 A and a rated voltage of 230/400 V AC, 50 Hz. The selective design means it delays tripping during short-duration earth faults, allowing downstream RCDs to clear first — this keeps upstream circuits live and avoids a full-panel blackout on a single branch fault. Depth is 70 mm, matching the 5SL4 breaker depth for a flush panel layout. Conductor range: 1.5 to 25 mm² solid or stranded. Supply connection can be top or bottom. Rated current of 63 A holds at ambient temperatures up to 45 °C. Above that, the unit derates: 58.59 A at 40 °C (note: this is the same as the 45 °C figure in the spec), 56.7 A at 50 °C, 54.81 A at 55 °C, 53.55 A at 60 °C, 52.29 A at 65 °C, and 50.4 A at 70 °C. Overvoltage category III.","metaTitle":"Siemens 5SM2626-2 SENTRON RC Unit, 63 A, 300 mA, 2-Pole, DIN","metaDescription":"Siemens 5SM2626-2 SENTRON selective RC unit, 63 A rated current, 300 mA AC fault current, 2-pole, 230/400 V, DIN rail mount. IP20. Current production. Available 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","Solid":"1.5 ... 25 mm²","Width":"70 mm","title":"5SM2626-2","Height":"90 mm","Stranded":"1.5 ... 25 mm²","at 40 Cel":"58.59 A","at 45 Cel":"58.59 A","at 50 Cel":"56.7 A","at 55 Cel":"54.81 A","at 60 Cel":"53.55 A","at 65 Cel":"52.29 A","at 70 Cel":"50.4 A","Rated Value":"50 Hz","description":"RC unit for 5SL4, 2-pole, type AC, selective, In: 63 A, 300 mA, Un AC: 230 V","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +75 °C","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product variations":"for 5SL4","Ambient temperature":"-5 ... +45 °C","Operating frequency":"50Hz","Product designation":"RC unit","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Selective","Number of width units":"2","Type of fault current":"AC","circuit-breaker / Design":"5SM2","Current / at AC / rated value":"63 A","Product feature / silicon-free":"Yes","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Supply voltage / at AC / rated value":"230/400 V","Switching function / short-term delayed":"No","Tripping residual current / rated value":"300 mA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Size of installation devices / acc. to DIN 43880":"1","Supply voltage / for testing equipment / minimum":"195 V","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/df03fcee86abac53107f43e4789ad4fb.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=456029&mlfb=5SM2626-2"},"ai":{"faq":[{"question":"Where can I buy 5SM2626-2 and how do I get a price?","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":"What is the closest functional second-source to 5SM2626-2?","answer":"The 5SY4304-7CV is a peer in the same SENTRON family, but it is a standard (non-selective) RCBO with a different trip characteristic and lower breaking capacity. The 5SM2626-2 is selective, so it will not drop into a panel wired for a standard RCBO without rewiring the branch protection scheme."},{"question":"What is the listed depth of 5SM2626-2?","answer":"The depth is 70 mm, matching the 5SL4 breaker depth for flush panel layout."},{"question":"What is the solid conductor range for 5SM2626-2?","answer":"Solid conductor range is 1.5 to 25 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2626-2","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/5SM2626-2 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}}