Siemens 3RV2021-4FA10 is a SIRIUS 3RV2 series 3-pole motor protection circuit breaker, with S0 size, adjustable overload protection current of 34-40A, Class 10 tripping, compatible with 690VAC system, short-circuit breaking capacity of 20kA (400VAC), IP20 protection, and DIN rail installation. The following is a detailed textual parameter description: Basic Attributes This product is a SIRIUS 3RV2 series 3-pole motor protection circuit breaker, with size specification S0, dimensions (width × height × depth) of 45×97×97mm, installed on a 35mm standard DIN rail with arbitrary installation position. The wiring method is top and bottom screw terminals, and the main circuit wiring is compatible with conductor cross-sections of 1.5-16mm² (solid/stranded). It has an IP20 protection level, operating temperature range of -20°C to +60°C, storage/transportation temperature range of -50°C to +80°C, and relative operating humidity of 10%-95%.
Electrical Performance: Rated operating voltage of 690VAC, rated frequency of 50/60Hz, overload protection current setting range of 34-40A, instantaneous short-circuit release response current of 480A (approximately 12 times the maximum overload setting current). Short-circuit breaking capacity (Icu): 20kA at 400VAC, 6kA at 500VAC, 3kA at 690VAC; Ics reaches 100kA at 240VAC. Utilization category AC-3, tripping class Class 10 (compliant with IEC 60947-4-1), featuring phase loss protection and temperature compensation functions. Under UL/CSA certification, the full-load current rating of three-phase AC motors is 40A at both 480V and 600V.
Safety and Lifespan: Mechanical lifespan (B10 value, high demand rate, compliant with SN 31920) is 50,000 cycles, with a dangerous failure rate (low/high demand rate, compliant with SN 31920) of 40%. The insulation distance meets the safety requirements of a 690V system. The product has passed UL/CSA, IECEx, KC, and other certifications, and complies with RoHS standards.