{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-1KK32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-1KK32","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-1KK32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-1KK32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1353-1KK32 RCBO, 1P+N, 32 A at 30 °C, 30 mA residual current, Type C tripping characteristic, 4.5 kA per EN 60898, 15 kA per IEC 60947-2, 2 MW units, halogen-free, silicon-free.","salesMarkdown":"It protects a 1P+N circuit (single pole switched, neutral solid) against overload, short-circuit, and earth leakage. Rated 32 A at 30 °C ambient with a Type C tripping characteristic (5–10× In for magnetic release), it handles the inrush from motor starters, contactor coils, and fluorescent lighting banks without nuisance trips. Breaking capacity is 4.5 kA per EN 60898 and 15 kA per IEC 60947-2, so it's rated for downstream sub-distribution where fault levels stay under 4.5 kA; the higher IEC figure covers industrial panels where the RCBO is part of a coordinated system. ## Temperature derating and panel fit The 32 A rating holds only at 30 °C. At 40 °C it derates to 30.4 A, at 50 °C to 28.8 A, and at 70 °C to 24.64 A. If this RCBO sits in a crowded enclosure near other heat sources, use the 40 °C or 50 °C figure for your load calculation — the 30 °C number is a lab rating, not a panel rating. IP20 applies only when the distribution board is installed with conductors connected; treat it as a panel-internal device, not for exposed mounting.","metaTitle":"Siemens 5SU1353-1KK32 SENTRON RCBO, 32 A, 30 mA, Type C, 4.5","metaDescription":"Siemens 5SU1353-1KK32 SENTRON RCBO, 32 A rated at 30 °C, 30 mA residual current, Type C characteristic, 4.5 kA per EN 60898, 15 kA per IEC 60947-2. Active production. Quoted to ord","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","title":"5SU1353-1KK32","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"RCBO, 4.5 kA, 1P+N, Type AC, 30 mA, C-Char, In: 32 A, Un AC: 230 V","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"230/240 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50 Hz","Product Designation":"RCBO","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Weight With Packaging":"286 g","at 30 °C rated value":"32 A","at 40 °C rated value":"30.4 A","at 45 °C rated value":"29.76 A","at 50 °C rated value":"28.8 A","at 55 °C rated value":"27.84 A","at 60 °C rated value":"27.2 A","at 65 °C rated value":"25.92 A","at 70 °C rated value":"24.64 A","Energy Limitation Class":"3","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"1","according to EN 60898 rated value":"4.5 kA","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":"15 kA","Surge Current Resistance At (8/20) μS":"1 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC","Mechanical Service Life (Operating Cycles) Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$30.48","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a04185ccfe700f44041788979fa859dc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=454433&mlfb=5SU1353-1KK32"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1353-1KK32?","answer":"4.5 kA per EN 60898 and 15 kA per IEC 60947-2. The EN figure governs most residential and light commercial final circuits; the IEC figure applies when the RCBO is used in an industrial panel with coordinated upstream protection."},{"question":"What is the closest functional second-source for 5SU1353-1KK32?","answer":"The Siemens 5SL6550-7BB is a similar RCBO in the same SENTRON family, but verify the pole configuration, residual current rating, and breaking capacity against your BOM — the 5SU1353-1KK32 is 1P+N, 32 A, 30 mA, Type C, 4.5 kA; the 5SL6550-7BB may differ in one or more of these parameters."},{"question":"Will 5SU1353-1KK32 drop into a panel specified around 5SL6550-7BB?","answer":"Both are 2 MW (36 mm) DIN-rail devices from the same SENTRON family, so the mechanical footprint is the same. However, electrical ratings (current, residual current, breaking capacity, tripping characteristic) must be cross-checked against the original specification before substitution."},{"question":"What compliance documentation does Siemens provide for 5SU1353-1KK32?","answer":"The part is halogen-free and silicon-free. For RoHS, REACH, UL, and IEC declarations, request the manufacturer's compliance documentation at quote time — these are typically provided as part of the technical file pack."},{"question":"Where can I buy 5SU1353-1KK32 and how is it quoted?","answer":"Sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-1KK32","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/5SU1353-1KK32 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}}