{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9353-1KK32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9353-1KK32","canonicalUrl":"https://aoctrl.com/siemens/5SU9353-1KK32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9353-1KK32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9353-1KK32, RCBO, 2-pole, 32 A rated, 30 mA residual, C-curve, 4.5 kA breaking capacity, 36 mm wide.","salesMarkdown":"## What this RCBO is and what the ratings mean for fit The Siemens 5SU9353-1KK32 is a 2-pole RCBO — an RCD-operated circuit breaker that combines overcurrent protection and residual current detection in one 36 mm-wide module. It's a SENTRON-series instantaneous type, rated 32 A at 30 °C with a C tripping curve, meaning it handles moderate inrush from motor or lighting loads without nuisance trips while still clearing faults fast. The 30 mA residual-current rating is the standard for personal protection against electric shock in commercial and industrial final circuits. Breaking capacity is 4.5 kA per EN 60898, which covers most sub-distribution boards fed by a transformer or upstream breaker with a higher interrupting rating. ## Mounting and panel integration Snaps onto DIN rail, 2 modular width units (36 mm), 77 mm deep. Mounting position is any orientation, and the supply can enter from top or bottom — no forced orientation on the panel layout. Installation depth is 70 mm, so it fits standard 80 mm-deep enclosures with a bit of wiring room behind. Touch protection is built in, and IP20 applies once the distribution board cover is on and conductors are connected.","metaTitle":"Siemens 5SU9353-1KK32 SENTRON RCBO, 32 A, 30 mA, C-curve","metaDescription":"Siemens SENTRON 5SU9353-1KK32 RCBO, 32 A rated, 30 mA residual current, C-curve, 4.5 kA breaking capacity. Current lifecycle stage. Quoted to order against RFQ.","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":"RCD-operated circuit breaker","at AC / rated value":"32 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"AC","Energy Limitation Class":"3","Weight / With Packaging":"320 g","according to EN 61346-2":"F","at 30 °C / rated value":"32 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","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"4.5 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","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","Type Of Voltage / Of The Operating Voltage":"AC","Product Component / 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/79f6610cfebb3bc98ed563eb1e55c601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1447811&mlfb=5SU9353-1KK32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9353-1KK32/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 5SU9353-1KK32 and the 5SL6550-7BB?","answer":"The 5SL6550-7BB is a different class of device — a miniature circuit breaker (MCB) only, without residual-current protection. The 5SU9353-1KK32 is an RCBO that combines overcurrent and RCD protection in one unit. They are not drop-in substitutes; the RCBO is wider (2 MW vs 1 MW) and requires the neutral conductor to pass through the residual-current sensor."},{"question":"Where can I buy 5SU9353-1KK32?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for 5SU9353-1KK32?","answer":"The part is halogen-free and silicon-free, and the product designation follows EN 61346-2 and IEC 81346-2 functional identifiers. Standard Siemens documentation includes the declaration of conformity to the applicable IEC/EN standards, and the RCBO carries the CE mark for the European market."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9353-1KK32","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/5SU9353-1KK32 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}}