{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1653-7KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1653-7KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1653-7KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1653-7KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1 series RCBO, 2-pole 1P+N, 20 A rated current, Type A fault current, C tripping characteristic, 4.5 kA breaking capacity per EN 60898, 2 width units (36 mm).","salesMarkdown":"It combines a 20 A rated current (at 30 °C ambient) with a Type A residual-current sensor and a C-curve magnetic trip, all in a 36 mm wide (2 width units) package that snaps onto DIN rail. The Type A trip means it catches pulsating DC fault currents from single-phase rectifiers or switching supplies — common in modern loads like LED drivers, VFDs, and IT equipment — not just pure sinusoidal AC leakage. ## Derating reality — the 20 A rating is only at 30 °C The 20 A rated current is the headline number, but it only holds at 30 °C ambient inside the distribution board. At 40 °C it derates to 18.8 A; at 50 °C it drops to 17.4 A; at 55 °C — the upper end of the operating range — it's 16.2 A. If the panel runs hot (stacked breakers, poor ventilation, or high ambient), size the upstream load accordingly. The 6.6 W maximum power dissipation per pole matters when grouping multiple RCBOs in a small enclosure — heat buildup accelerates the derating curve. ## Mounting and wiring — what fits in the panel The 5SU1653-7KK20 occupies 36 mm of DIN rail (2 width units) with a depth of 77 mm and an installation depth of 70 mm behind the panel face. Supply can enter from either top or bottom. The IP20 rating holds only when the distribution board is installed and conductors are connected; this is a panel-internal device, not a standalone enclosure. Mounting position is any — no restriction on horizontal or vertical orientation.","metaTitle":"Siemens 5SU1653-7KK20 SENTRON RCBO, 20 A Type A, 4.5 kA","metaDescription":"Siemens 5SU1653-7KK20 SENTRON RCBO, 2-pole 1P+N, 20 A rated, Type A fault current, C characteristic, 4.5 kA breaking capacity per EN 60898. Current production. Sourced to order aga","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"0.75 ... 35 mm²","Width":"36 mm","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","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":"A","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb8f6d9ffc2062365e5dad64cf8cb772.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=183697&mlfb=5SU1653-7KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1653-7KK20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1653-7KK20 and get a price?","answer":"The 5SU1653-7KK20 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 quote with lead time."},{"question":"What is the closest functional second-source to 5SU1653-7KK20?","answer":"The 5SU9304-1KK32 is a different pole/current variant in the same SENTRON family, not a direct functional replacement. The 5SU1653-7KK20 shares the 36 mm width and 0.75–35 mm² terminal range with that sibling, so panel cutout and wiring are compatible, but the electrical ratings (20 A, Type A, C-curve, 4.5 kA) are specific to this order code."},{"question":"What is the depth of 5SU1653-7KK20?","answer":"The 5SU1653-7KK20 has a depth of 77 mm and an installation depth of 70 mm behind the panel face."},{"question":"What conductor sizes does 5SU1653-7KK20 accept?","answer":"The terminals accept solid and stranded conductors from 0.75 mm² up to 35 mm²."},{"question":"Will 5SU1653-7KK20 drop into a panel specified around 5SU9304-1KK32?","answer":"Yes, both share the same 36 mm width (2 width units) and the same 0.75–35 mm² terminal range, so the panel cutout and wiring are compatible without rework. The electrical ratings differ — verify the 20 A Type A C-curve against your circuit requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1653-7KK20","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/5SU1653-7KK20 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}}