{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1646-6FP32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1646-6FP32","canonicalUrl":"https://aoctrl.com/siemens/5SU1646-6FP32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1646-6FP32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1646-6FP32 RCBO, 4-pole, B-curve, 32 A at 30 °C, 6 kA breaking capacity, 72 mm wide, IP20.","salesMarkdown":"It combines ground-fault and overcurrent protection in one DIN-rail module, saving panel space over separate RCCB + MCB pairs. ## Temperature derating and real-world current Above that, derate linearly: 30.8 A at 40 °C, 30.2 A at 45 °C, 29.5 A at 50 °C, 29.2 A at 55 °C, 28.2 A at 60 °C, and 26.9 A at 70 °C. If the panel ambient runs at 50 °C, the effective continuous current is 29.5 A — size the load accordingly. The insulation voltage (Ui) is rated 500 V, and surge voltage resistance is 4 000 V. The 72 mm width equals 4 modular units (18 mm each). Supply can enter from either top or bottom. The design is instantaneous (no intentional time delay), so it trips without delay on fault.","metaTitle":"Siemens SENTRON 5SU1646-6FP32 RCBO, 4P, B Curve 32 A, 6 kA","metaDescription":"Siemens SENTRON 5SU1646-6FP32 RCBO, 4-pole, B-curve 32 A, 6 kA breaking capacity per EN 60898. IP20 with distribution board. Active lifecycle, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"72 mm","Width":"72 mm","Height":"85 mm","Maximum":"70 °C","Minimum":"-40 °C","Halogen-Free":"No","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"400 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","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":"540 g","at 30 °C rated value":"32 A","at 40 °C rated value":"30.8 A","at 45 °C rated value":"30.2 A","at 50 °C rated value":"29.5 A","at 55 °C rated value":"29.2 A","at 60 °C rated value":"28.2 A","at 70 °C rated value":"26.9 A","Energy Limitation Class":"1","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"B","Number Of Poles With Protection":"4","according to EN 60898 rated value":"6 kA","insulation voltage (Ui) rated value":"500 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 000 V","according to IEC 60947-2 rated value":"6 kA","Surge Current Resistance At (8/20) μS":"0.25 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bed74928c9539d6c50f1eb1e06da07d1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1438082&mlfb=5SU1646-6FP32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1646-6FP32/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1646-6FP32 and how do I get a price?","answer":"The part is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm availability and current pricing."},{"question":"What are the key ratings for 5SU1646-6FP32?","answer":"It is a 4-pole RCBO with B-curve, rated 32 A at 30 °C, 6 kA breaking capacity per EN 60898 and IEC 60947-2, insulation voltage 500 V, and surge voltage resistance 4 000 V."},{"question":"What is the depth of 5SU1646-6FP32?","answer":"The depth is 72 mm, with an installation depth of 70 mm."},{"question":"What is the width of 5SU1646-6FP32?","answer":"The width is 72 mm, which corresponds to 4 modular units (18 mm each)."},{"question":"Will 5SU1646-6FP32 drop into a panel specified for 5SY4304-7CV?","answer":"Both are 4-pole, 72 mm wide DIN-rail devices, so the footprint is the same. However, 5SU1646-6FP32 is an RCBO (combined RCD + MCB), while 5SY4304-7CV is a plain MCB — verify whether the circuit requires residual current protection before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1646-6FP32","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/5SU1646-6FP32 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}}