{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1354-1LB25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1354-1LB25","canonicalUrl":"https://aoctrl.com/siemens/5SU1354-1LB25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1354-1LB25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1354-1LB25, RCBO, 2-pole, 25 A rated current, 30 mA residual fault current, Type AC, tripping characteristic C, 10 kA breaking capacity per EN 60898.","salesMarkdown":"It combines a 25 A thermal-magnetic overcurrent trip (C-curve) with a 30 mA Type AC residual current detection in a single 36 mm wide (2 MW) DIN-rail module. The short-time delayed G, super resistant K design means it tolerates brief inrush and surge currents without nuisance tripping — useful on circuits with small motor drives or capacitive loads that a standard RCBO might false-trip. The 25 A rating at 30 °C is the headline thermal current. Derate it as the panel ambient climbs: 23.5 A at 40 °C, 22.75 A at 45 °C, 21.75 A at 50 °C, 20.25 A at 55 °C and 60 °C, 19.25 A at 65 °C, and 18.25 A at 70 °C. If the panel runs hot — say 50 °C inside a sealed enclosure — this RCBO is good for 21.75 A continuous, not 25 A. The 30 mA residual trip threshold is standard for personnel protection per IEC 60364. Two modular-width units (36 mm) snap onto standard DIN rail. Depth is 77 mm, installation depth 70 mm — check the enclosure depth before committing; a shallow 80 mm deep box leaves only 3 mm clearance behind the conductors. The IP20 rating applies only when the distribution board is installed with connected conductors — this is a panel-interior device, not for standalone surface mounting.","metaTitle":"Siemens 5SU1354-1LB25 SENTRON RCBO, 2-pole 25A 30mA Type AC","metaDescription":"Siemens SENTRON 5SU1354-1LB25 RCBO, 2-pole, 25 A rated, 30 mA residual current, Type AC, C-curve, 10 kA breaking capacity. Current production. Quoted 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","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","at AC / rated value":"25 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":"AC","Energy Limitation Class":"3","Weight / With Packaging":"289 g","according to EN 61346-2":"F","at 30 °C / rated value":"25 A","at 40 °C / rated value":"23.5 A","at 45 °C / rated value":"22.75 A","at 50 °C / rated value":"21.75 A","at 55 °C / rated value":"20.25 A","at 60 °C / rated value":"20.25 A","at 65 °C / rated value":"19.25 A","at 70 °C / rated value":"18.25 A","according to IEC 81346-2":"F","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","For Testing Equipment / Minimum":"195 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","according to EN 60898 / rated value":"10 kA","Tripping Fault Current / Rated Value":"30 mA","insulation voltage (Ui) / rated value":"264 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"4 000 V","according to IEC 60947-2 / rated value":"20 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"3 kA","Type Of Voltage / Of The Operating Voltage":"AC","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$80.01","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d0a0b4e4cf53e649f6afd48e725542f8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=50542&mlfb=5SU1354-1LB25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1354-1LB25/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1354-1LB25?","answer":"10 kA rated breaking capacity per EN 60898. This covers the majority of final-subcircuit fault levels in commercial and light industrial panels."},{"question":"What is the difference between 5SU1354-1LB25 and the 5SY5240-7?","answer":"The 5SU1354-1LB25 is a 2-pole RCBO combining overcurrent and residual current protection. The 5SY5240-7 is a miniature circuit breaker (MCB) only — no residual current element. They are not drop-in substitutes; the RCBO occupies the same 2 MW footprint but requires the neutral connection for the residual current electronics."},{"question":"Where can I buy 5SU1354-1LB25?","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/5SU1354-1LB25","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/5SU1354-1LB25 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}}