{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1354-0LB20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1354-0LB20","canonicalUrl":"https://aoctrl.com/siemens/5SU1354-0LB20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1354-0LB20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1 RCBO, 2-pole 1P+N, 20 A rated current, B tripping characteristic, 10 kA breaking capacity per EN 60898, AC fault current type, 2 width units (36 mm).","salesMarkdown":"## Thermal derating and conductor sizing At 40 °C it derates to 18.8 A, at 50 °C to 17.4 A, and at 55 °C to 16.2 A — the upper end of its operating ambient range. Maximum power dissipation is 7.4 W, so thermal buildup in a tightly packed enclosure is manageable. ## Mounting and environment Mounts in any position — no derating needed for horizontal or inverted orientation. IP20 when installed in a distribution board with conductors connected; that's the standard for enclosed panel gear, not for open wet areas. The supply can enter from either top or bottom, which saves a rewire if the panel layout changes.","metaTitle":"Siemens 5SU1354-0LB20 SENTRON RCBO, 20 A, B Curve, 10 kA","metaDescription":"Siemens 5SU1354-0LB20 SENTRON RCBO, 2-pole 1P+N, 20 A rated current, B tripping characteristic, 10 kA breaking capacity per EN 60898. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"0.75 ... 35 mm²","Width":"36 mm","Height":"90 mm","Maximum":"7.4 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"20 A","at 40 Cel":"18.8 A","at 45 Cel":"18.2 A","at 50 Cel":"17.4 A","at 55 Cel":"16.2 A","at 60 Cel":"16.2 A","at 65 Cel":"15.4 A","at 70 Cel":"14.6 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"RCBO","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Energy limiting class":"3","Number of width units":"2","Type of fault current":"AC","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"20 A","Tripping characteristic class":"B","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"1","acc. to IEC 60947-2 / rated value":"20 kA","Product feature / Touch protection":"Yes","Supply voltage frequency / rated value":"50 Hz","Tripping residual current / rated value":"30 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"3 kA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"Yes","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2a74bf42afdc1a3db7a974b3eee58fe2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=459052&mlfb=5SU1354-0LB20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1354-0LB20/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1354-0LB20?","answer":"It is rated 10 kA per EN 60898, which covers the majority of residential and light commercial distribution boards."},{"question":"What conductor sizes does 5SU1354-0LB20 accept?","answer":"Both solid and stranded conductors from 0.75 mm² up to 35 mm² fit the terminals."},{"question":"Where can I buy 5SU1354-0LB20?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1354-0LB20","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/5SU1354-0LB20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}