{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1746-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1746-6","canonicalUrl":"https://aoctrl.com/siemens/5SM1746-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1746-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 4-pole, Type A, 63 A rated at 40 °C, 500 mA trip, 10 kA SCCR, 50 Hz, DIN rail mount, IP20.","salesMarkdown":"The Siemens SENTRON 5SM1746-6 is a 4-pole residual current circuit breaker (RCCB) rated 63 A at 40 °C with a 500 mA tripping fault current, Type A sensitivity. ## Ratings & Fit Rated 63 A continuous at 40 °C ambient; derates to 60.48 A at 50 °C, 57.96 A at 55 °C, 55.44 A at 60 °C, 52.92 A at 65 °C, and 50.4 A at 70 °C — so in a warm panel the effective current capacity drops. The 500 mA trip threshold suits circuits with higher leakage (e.g., long cable runs or industrial loads) where a 30 mA device would nuisance-trip. Type A detects pulsating DC residual currents from rectifiers or VFDs, not just sinusoidal AC. The 4-pole design (3 phases + neutral) is standard for three-phase distribution boards. Snap-on DIN rail (REG) mounting, any position. Installation depth 55 mm. Supply connection top or bottom. Silicon-free construction. Mechanical service life typical 10 000 switching cycles.","metaTitle":"Siemens SENTRON 5SM1746-6 RCCB, 4-pole, 63 A, 500 mA, Type A","metaDescription":"Siemens SENTRON 5SM1746-6 4-pole RCCB, 63 A rated, 500 mA trip, Type A, 10 kA SCCR, 50 Hz, DIN rail. Current lifecycle. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Maximum":"45 °C","Minimum":"-25 °C","Rated Value":"50 Hz","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","Installation Depth":"55 mm","Product Brand Name":"SENTRON","Maximum Permissible":"60 °C","Minimum Permissible":"-40 °C","Operating Frequency":"50 Hz","Product Designation":"RCCB","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"A","I2t value / permissible":"70 000 A²·s","at 40 °C / rated value":"63 A","at 45 °C / rated value":"63 A","at 50 °C / rated value":"60.48 A","at 55 °C / rated value":"57.96 A","at 60 °C / rated value":"55.44 A","at 65 °C / rated value":"52.92 A","at 70 °C / rated value":"50.4 A","Short-Circuit Current Rating":"10 kA","Number Of Modular Width Units":"4","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"0.8 kA","Position / Of Power Supply Cord":"top or bottom","Let-Through Current / Permissible":"7 500 kA","Tripping Fault Current / Rated Value":"500 mA","supply voltage / at AC / rated value":"400 V","Surge Current Resistance / Rated Value":"1 kA","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"No","operational current / at AC / rated value":"63 A","Supply Voltage / For Testing Equipment / Minimum":"100 V","size of installation devices / acc. to DIN 43880":"1","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=79579&mlfb=5SM1746-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1746-6/alternatives.json"},"ai":{"faq":[{"question":"What is 5SM1746-6's rated current and trip sensitivity?","answer":"Rated 63 A at 40 °C, tripping at 500 mA residual current, Type A."},{"question":"What is the closest functional second-source for 5SM1746-6?","answer":"The 5SU9354-7KK16 is a 4-pole Type A RCCB with similar ratings, but verify the trip current and SCCR against your BOM — the 5SM1746-6 carries a 10 kA SCCR per IEC 61008-1."},{"question":"Where can I buy 5SM1746-6 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."},{"question":"What compliance documentation does this brand provide for 5SM1746-6?","answer":"As a Siemens SENTRON product, it carries IEC 61008-1 and EN 60898 compliance. Specific RoHS, REACH, and UL documentation is available on request with the order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1746-6","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/5SM1746-6 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}}