{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-7KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-7KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-7KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-7KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1353-7KK20, RCBO, 2-pole, tripping characteristic C, rated current 20 A, rated residual current 30 mA, Type A, breaking capacity 4.5 kA per EN 60898.","salesMarkdown":"## RCBO for final-circuit protection — 2-pole, C-curve, 20 A, 30 mA Type A The Siemens 5SU1353-7KK20 is a 2-pole RCBO (residual current circuit breaker with overcurrent protection) from the SENTRON series, combining a C-curve miniature circuit breaker (20 A rated current) with a 30 mA Type A residual current device in a single 36 mm wide module — 2 modular width units on the DIN rail. The Type A residual current detection covers pulsating DC fault currents and sinusoidal AC — the standard requirement for circuits with single-phase electronics, switched-mode power supplies, or variable-speed drives downstream. At 30 °C ambient the device carries the full 20 A; derate linearly to 14.6 A at 70 °C per the published temperature table — a consideration when the RCBO is packed into a warm enclosure with other heat sources. The 5SU1353-7KK20 carries a current production lifecycle status from Siemens. ## Mounting and integration — DIN-rail final-circuit protection Touch protection is provided on the terminals per the product feature listing. The device is classified as energy limitation class 3, meaning it limits let-through energy to a level that protects downstream equipment under fault conditions.","metaTitle":"Siemens 5SU1353-7KK20 SENTRON RCBO, 2-pole C 20A 30mA","metaDescription":"Siemens SENTRON 5SU1353-7KK20 RCBO, 2-pole, C-curve 20A, 30mA Type A RCD, 4.5kA per EN 60898. Current production. Sourced to order against RFQ.","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":"5SU1353-7KK20","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"RCBO, 4.5 kA, 1P+N, type A, 30 mA, C-Char, In: 20 A, Un AC: 230 V","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 Hz","Product Designation":"RCBO","at AC / rated value":"20 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":"A","Energy Limitation Class":"3","Weight / With Packaging":"280 g","according to EN 61346-2":"F","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","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","according to IEC 60947-2 / rated value":"15 kA","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/79c043f4c646153496987f47c3448849.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=286615&mlfb=5SU1353-7KK20"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1353-7KK20?","answer":"The rated breaking capacity is 4.5 kA according to EN 60898."},{"question":"What is the difference between 5SU1353-7KK20 and the 5SY5250-7?","answer":"The 5SY5250-7 is a Siemens miniature circuit breaker (MCB) only — it provides overcurrent protection but no residual current protection. The 5SU1353-7KK20 is an RCBO that integrates both overcurrent and 30 mA Type A RCD protection in one unit. They share the same 2-module DIN-rail footprint, so the 5SU1353-7KK20 can replace a 5SY5250-7 plus a separate RCD in the same panel space, but the inverse is not true without adding a separate RCD module."},{"question":"Where can I buy 5SU1353-7KK20?","answer":"This part is 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":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-7KK20","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/5SU1353-7KK20 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}}