{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1354-6LB40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1354-6LB40","canonicalUrl":"https://aoctrl.com/siemens/5SU1354-6LB40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1354-6LB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 5SU1354-6LB40, B-curve 40 A, 2-pole 1P+N, Type A residual current, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 2 MW units, IP20.","salesMarkdown":"## Siemens SENTRON 5SU1354-6LB40 — RCBO, B-Curve 40 A, Type A The Siemens SENTRON 5SU1354-6LB40 is a 2-pole (1P+N) residual current circuit breaker with overcurrent protection (RCBO) rated 40 A at 30 °C with a B-curve tripping characteristic. It combines a Type A residual current device (sensitive to pulsating DC and AC sinusoidal residual currents) with a thermal-magnetic overcurrent trip in a single 2-module-width (36 mm) package that snaps onto DIN rail. Breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2 — the IEC 60947-2 figure is the one to use for industrial panel coordination where higher fault current is expected. The short-time delayed G characteristic and super resistant K design mean this unit tolerates brief inrush without nuisance tripping, which matters on circuits feeding small motor loads or capacitive power supplies. At 40 °C ambient the rated current drops to 37.6 A; at 50 °C it is 34.8 A; at 70 °C it is 29.2 A. Rated IP20 with conductors connected and the distribution board installed — this is a panel-internal device, not for wet or outdoor locations.","metaTitle":"Siemens SENTRON 5SU1354-6LB40 RCBO, B-Curve 40A, 10kA, Type","metaDescription":"Siemens SENTRON 5SU1354-6LB40 RCBO, 2-pole 1P+N, B-curve 40A, 10kA per EN 60898, 15kA per IEC 60947-2, Type A residual current, 2 MW units, current production. Sourced to order aga","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","Product Designation":"RCBO","acc. to IEC 81346-2":"F","at AC / rated value":"40 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Short-time delayed G, super resistant K","Residual Current Type":"A","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"293 g","at 30 °C / rated value":"40 A","at 40 °C / rated value":"37.6 A","at 45 °C / rated value":"36.4 A","at 50 °C / rated value":"34.8 A","at 55 °C / rated value":"32.4 A","at 60 °C / rated value":"32.4 A","at 65 °C / rated value":"30.8 A","at 70 °C / rated value":"29.2 A","Number Of Modular Width Units":"2","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":"15 kA","Product Feature / Touch Protection":"Yes","Tripping Fault Current / Rated Value":"30 mA","Supply Voltage Frequency / Rated Value":"50 Hz","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"3 kA","Product Function / Neutral Conductor Switching":"Yes","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/254fed184801cfd15d0870de47e1061e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=400802&mlfb=5SU1354-6LB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1354-6LB40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SU1354-6LB40?","answer":"Submit an RFQ through this listing. The part is sourced to order; availability and current pricing are confirmed at quote time."},{"question":"What is 5SU1354-6LB40's listed depth (77 mm) on this component line?","answer":"The depth is 77 mm, with an installation depth of 70 mm. Width is 36 mm (2 modular width units), height 90 mm."},{"question":"Will 5SU1354-6LB40 drop into a panel that was specified around 5SL6550-7BB without rewiring?","answer":"No — the 5SL6550-7BB is a different class (MCB, not RCBO) with different pole count and residual current functionality. The 5SU1354-6LB40 is a 1P+N RCBO with Type A residual current protection; the 5SL6550-7BB lacks the RCD element entirely. Panel wiring and neutral bar arrangement would differ."},{"question":"What compliance documentation does this brand provide for 5SU1354-6LB40 (RoHS, REACH, UL, IEC)?","answer":"The device is designed to EN 60898 and IEC 60947-2 for breaking capacity, carries overvoltage category III, and pollution degree 2. Halogen-free and silicon-free construction is confirmed. For specific RoHS/REACH/UL declarations, request the manufacturer's compliance documentation at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1354-6LB40","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/5SU1354-6LB40 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}}