{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-1KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-1KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-1KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-1KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, RCBO (Residual Current Circuit Breaker with Overcurrent Protection), 5SU1353-1KK20, 1P+N, C-curve, 20 A at 30 °C, breaking capacity 4.5 kA (EN 60898) / 15 kA (IEC 60947-2), 50 Hz.","salesMarkdown":"The Siemens 5SU1353-1KK20 is a SENTRON RCBO — residual current breaker with integrated overcurrent protection — in a 1P+N configuration, meaning it switches and protects the line conductor only, with the neutral passing through but not switched. The breaking capacity is rated 4.5 kA per EN 60898 and 15 kA per IEC 60947-2, so it's sized for sub-distribution boards where the prospective fault current stays under 4.5 kA at the service entrance — the higher IEC rating gives headroom for industrial back-up protection coordination. Operates at 50 Hz only. In a crowded enclosure, the effective rating drops: 18.8 A at 40 °C, 18.2 A at 45 °C, 17.4 A at 50 °C, 16.2 A at 55 °C and 60 °C, 15.4 A at 65 °C, and 14.6 A at 70 °C. For a panel running at 50 °C — common in a sealed cabinet near a machine — the breaker is good for 17.4 A continuous, not 20 A. Factor this into the load schedule.","metaTitle":"Siemens 5SU1353-1KK20 SENTRON RCBO, 20 A C-curve, 1P+N","metaDescription":"Siemens SENTRON 5SU1353-1KK20 RCBO, 20 A rated at 30 °C, C-curve, 1P+N, 4.5 kA (EN 60898) / 15 kA (IEC 60947-2). Active production, sourced to order. Request quote.","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","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":"280 g","at 30 °C rated value":"20 A","at 40 °C rated value":"18.8 A","at 45 °C rated value":"18.2 A","at 50 °C rated value":"17.4 A","at 55 °C rated value":"16.2 A","at 60 °C rated value":"16.2 A","at 65 °C rated value":"15.4 A","at 70 °C rated value":"14.6 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","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/580c8b33b63ef5c98f1b86ed920c189f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=22567&mlfb=5SU1353-1KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1353-1KK20/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-1KK20","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/5SU1353-1KK20 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}}