{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1644-1RC40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1644-1RC40","canonicalUrl":"https://aoctrl.com/siemens/5SU1644-1RC40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1644-1RC40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 40 A, 4-pole, 7 MWU, C characteristic, Type AC 300 mA, breaking capacity 10 kA per EN 60898 / 15 kA per IEC 60947-2.","salesMarkdown":"The Siemens 5SU1644-1RC40 is a 40 A, 4-pole RCBO from the SENTRON family — a combined overcurrent and residual-current device that protects a three-phase circuit against overload, short-circuit, and earth leakage in one 7-module-wide unit. The Type AC 300 mA residual-current element detects sinusoidal AC fault currents down to 300 mA, which covers basic personnel protection and fire prevention on circuits without non-sinusoidal loads. Breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2 — the higher figure under the industrial standard means it can interrupt a 15 kA prospective fault current on a 415 V AC supply without welding the contacts or cascading damage upstream. That 15 kA rating is the one to use for selectivity studies in an industrial panel. Operating frequency is 50 Hz only; this part is not rated for 60 Hz networks. The 5SU1644-1RC40 snaps onto a DIN rail (EN 60715) and occupies 7 modular width units (MWU) — 126 mm of rail space.","metaTitle":"Siemens 5SU1644-1RC40 SENTRON RCBO, 40A 4P C-char 300mA","metaDescription":"Siemens SENTRON 5SU1644-1RC40 RCBO, 40 A, 4-pole, C characteristic, Type AC 300 mA. Breaking capacity 10 kA (EN 60898) / 15 kA (IEC 60947-2). Current production. Available to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"126 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"415V","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","Energy Limitation Class":"3","Number Of Modular Width Units":"7","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"4","according to EN 60898 rated value":"10 kA","insulation voltage (Ui) rated value":"440 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 V","according to IEC 60947-2 rated value":"15 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC"}},"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=367589&mlfb=5SU1644-1RC40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1644-1RC40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SU1644-1RC40?","answer":"Submit an RFQ through this listing. Pricing and stock levels are confirmed at quote time through independent distribution channels."},{"question":"What is 5SU1644-1RC40's listed depth?","answer":"The installation depth is 70 mm, matching the overall depth of the device. It fits standard 80 mm deep enclosures."},{"question":"What compliance documentation does Siemens provide for 5SU1644-1RC40?","answer":"The part carries ratings per EN 60898 and IEC 60947-2, with overvoltage category III and pollution degree 2. Specific RoHS, REACH, and UL documentation should be confirmed at time of order — the evidence does not list these certifications explicitly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1644-1RC40","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/5SU1644-1RC40 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}}