{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1653-1KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1653-1KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1653-1KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1653-1KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1 RCBO, 20 A, C characteristic, 1P+N, 4.5 kA breaking capacity, 2 MW, IP20, halogen-free.","salesMarkdown":"The Siemens 5SU1653-1KK20 is a SENTRON RCBO (residual current circuit breaker with overcurrent protection) rated 20 A with a C tripping characteristic, 1P+N poles, and a 4.5 kA breaking capacity per EN 60898. It combines overcurrent and residual current (AC type) protection in a single 36 mm wide unit (2 MW), saving a DIN-rail position compared to separate MCB+RCCD. ## Mounting and wiring specifics The 5SU1653-1KK20 occupies 36 mm on the DIN rail (2 width units) with a depth of 77 mm and an installation depth of 70 mm. The supply cord can enter from either top or bottom, which simplifies busbar placement and panel layout. Conductor range: solid or stranded 0.75 to 35 mm² — covers most final-circuit wiring sizes. IP20 rating applies only when the distribution board is installed and conductors are connected; treat it as a panel-internal device, not for exposed mounting. Storage range extends -40 to +75 °C. Mounting position any — no restriction for vertical or horizontal rail. ## Current derating — don't ignore it At 30 °C the RCBO is rated for 20 A, but at 40 °C it drops to 18.8 A, at 50 °C to 17.4 A, and at 70 °C to 14.6 A. The 6.6 W maximum power dissipation is the internal loss at rated load; factor it into enclosure thermal calculations.","metaTitle":"Siemens 5SU1653-1KK20 SENTRON RCBO, 20 A, C-curve, 1P+N, 4.5","metaDescription":"Siemens 5SU1653-1KK20 SENTRON RCBO, 20 A rated, C tripping characteristic, 1P+N, 4.5 kA breaking capacity per EN 60898. Current production. Quoted 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","Solid":"0.75 ... 35 mm²","Width":"36 mm","title":"5SU1653-1KK20","Height":"90 mm","Maximum":"6.6 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"20 A","at 40 Cel":"18.8 A","at 45 Cel":"18.2 A","at 50 Cel":"17.4 A","at 55 Cel":"16.2 A","at 60 Cel":"16.2 A","at 65 Cel":"15.4 A","at 70 Cel":"14.6 A","description":"RCBO, 4.5 kA, 1P+N, Type AC, 300 mA, C-Char, In: 20 A, Un AC: 230 V","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"RCBO","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Instantaneous","Energy limiting class":"3","Number of width units":"2","Type of fault current":"AC","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"20 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"4.5 kA","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"1","acc. to IEC 60947-2 / rated value":"15 kA","Product feature / Touch protection":"Yes","Supply voltage frequency / rated value":"50 Hz","Tripping residual current / rated value":"300 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"1 kA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / 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/4e24846fed8dfe5f0d7e15dbe9b7b8a9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=517368&mlfb=5SU1653-1KK20"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1653-1KK20?","answer":"The rated breaking capacity is 4.5 kA per EN 60898, which is the standard for domestic and light commercial distribution boards where the prospective short-circuit current is below that level."},{"question":"Will 5SU1653-1KK20 drop into a panel specified for 5SL6563-7BB?","answer":"Both are 2-MW wide (36 mm) DIN-rail RCBOs from the SENTRON family, but the 5SL6563-7BB is a B-curve 63 A device while the 5SU1653-1KK20 is a C-curve 20 A. They share the same physical footprint and terminal range (0.75–35 mm²), so mechanical fit is identical, but the electrical ratings differ — verify the circuit's load and short-circuit requirements before swapping."},{"question":"What compliance documentation does Siemens provide for 5SU1653-1KK20?","answer":"The RCBO is designed to EN 60898 (breaking capacity 4.5 kA) and carries the SENTRON brand. It is halogen-free and silicon-free. Standard Siemens documentation includes the CE declaration of conformity and the product datasheet; check with your Siemens contact for specific RoHS/REACH statements if required by your compliance process."},{"question":"Where can I buy 5SU1653-1KK20 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1653-1KK20","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/5SU1653-1KK20 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}}