{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1653-1KK40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1653-1KK40","canonicalUrl":"https://aoctrl.com/siemens/5SU1653-1KK40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1653-1KK40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1653-1KK40 RCBO, 1P+N, 40 A rated at 30 °C, C-curve, 4.5 kA (EN 60898) / 10 kA (IEC 60947-2), 2 MW, IP20.","salesMarkdown":"Its 40 A rating at 30 °C and C-curve tripping characteristic suit it for motor and lighting loads with moderate inrush — think pump starters, compressor contactors, or fluorescent banks where the magnetic trip needs to ride through a short startup surge without nuisance opening. The 2-module width (36 mm) and 77 mm depth fit standard DIN-rail enclosures; supply can enter from either top or bottom, which simplifies busbar routing in a crowded panel. IP20 applies once the distribution board is installed with conductors connected — this is a protected-enclosure device, not a standalone outdoor unit. Two breaking-capacity ratings are on record: 4.5 kA per EN 60898 and 10 kA per IEC 60947-2. The 10 kA rating gives headroom for selectivity with an upstream MCCB or fuse — important when coordinating a downstream sub-distribution board. ## Derating and ambient temperature The manufacturer provides a full derating curve: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, 32.4 A at 55 °C and 60 °C, 30.8 A at 65 °C, and 29.2 A at 70 °C. In a sealed panel with multiple RCBOs ganged together, the effective current must be reduced per these values — a common oversight that leads to nuisance tripping in summer conditions.","metaTitle":"Siemens 5SU1653-1KK40 SENTRON RCBO, 40 A C-Curve, 4.5/10 kA","metaDescription":"Siemens SENTRON 5SU1653-1KK40 RCBO, 1P+N, 40 A rated at 30 °C, C-curve trip, 4.5 kA (EN 60898) / 10 kA (IEC 60947-2). Current lifecycle. 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":"5SU1653-1KK40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"RCBO, 4.5 kA, 1P+N, Type AC, 300 mA, C-Char, In: 40 A, Un AC: 230 V","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":"275 g","at 30 °C rated value":"40 A","at 40 °C rated value":"37.6 A","at 45 °C rated value":"36.4 A","at 50 °C rated value":"34.8 A","at 55 °C rated value":"32.4 A","at 60 °C rated value":"32.4 A","at 65 °C rated value":"30.8 A","at 70 °C rated value":"29.2 A","Energy Limitation Class":"3","For Testing Equipment Minimum":"100 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":"10 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9abc50a64a1cadd6e122b9fe2c3796d2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=513686&mlfb=5SU1653-1KK40"},"ai":{"faq":[{"question":"What is the 5SU1653-1KK40's depth?","answer":"The listed depth is 77 mm (excluding the DIN-rail clip and any protruding terminals). Installation depth is 70 mm, which is the panel clearance needed behind the mounting surface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1653-1KK40","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/5SU1653-1KK40 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}}