{"product_id":"siemens-circuit-breaker-for-motor-protection-size-s0-34-40-a","title":"Siemens Circuit breaker for motor protection, size S0, 34...40 A","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RV2021-4FA10 is a SIRIUS 3RV2 motor protection circuit breaker, circuit breaker size S0 for motor protection, CLASS 10 with A-release 34...40 A and N-release 480 A, screw terminal, standard switching capacity. It provides thermal overload and magnetic short-circuit protection for three-phase motors within the 34–40 A range, combining protection and switching in a compact device suitable for use in motor starters and load feeders.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCircuit breaker size S0 for motor protection (SIRIUS 3RV2 series)\u003c\/li\u003e\n\u003cli\u003eTripping class 10 for standard motor-start applications\u003c\/li\u003e\n\u003cli\u003eThermal overload release (A-release) adjustable from 34...40 A\u003c\/li\u003e\n\u003cli\u003eMagnetic short-circuit release (N-release) fixed at 480 A\u003c\/li\u003e\n\u003cli\u003eStandard switching capacity for industrial motor circuits\u003c\/li\u003e\n\u003cli\u003e3-pole design for three-phase motor protection\u003c\/li\u003e\n\u003cli\u003eScrew terminals for secure, robust wiring\u003c\/li\u003e\n\u003cli\u003eCompact, current-limiting design for load feeders\u003c\/li\u003e\n\u003cli\u003eFinger-safe IP20 on front and terminals with connected conductors\u003c\/li\u003e\n\u003cli\u003eHigh mechanical and electrical endurance (typically 100 000 switching cycles)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 3RV2021-4FA10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Motor protection circuit breaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family:\u003c\/strong\u003e SIRIUS 3RV2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit Breaker Size:\u003c\/strong\u003e S0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles (Main Circuit):\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripping Class:\u003c\/strong\u003e CLASS 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload Release (A-release):\u003c\/strong\u003e 34...40 A adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort-circuit Release (N-release):\u003c\/strong\u003e 480 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Operating Voltage:\u003c\/strong\u003e up to 690 V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage Ui:\u003c\/strong\u003e 690 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Surge Voltage Withstand:\u003c\/strong\u003e 6 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Loss (typical):\u003c\/strong\u003e approx. 14 W total\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Class:\u003c\/strong\u003e IP20 (front and terminals)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Service Life:\u003c\/strong\u003e ~100 000 switching cycles (main and auxiliary contacts)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Endurance:\u003c\/strong\u003e ~100 000 switching cycles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Operating Temperature:\u003c\/strong\u003e –20 °C to +40 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage \/ Transport Temperature:\u003c\/strong\u003e –50 °C to +80 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Compensation:\u003c\/strong\u003e –20 °C to +60 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity (operation):\u003c\/strong\u003e 10 % to 95 %\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Installation Altitude:\u003c\/strong\u003e 2000 m above sea level\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e Screw terminals for main connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Standards\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart of the Siemens SIRIUS motor protection and load feeder system\u003c\/li\u003e\n\u003cli\u003eDesign for increased safety and finger-safe operation (IP20)\u003c\/li\u003e\n\u003cli\u003eMeets Siemens specifications for motor protection circuit breakers with CLASS 10 tripping characteristics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 3RV2021-4FA10 is used for protecting and switching three-phase motors in industrial control panels, motor control centers and machine feeders. Typical applications include pumps, fans, compressors, conveyors and other machinery where motor currents fall within the 34...40 A range, and reliable overload and short-circuit protection with integrated switching is required.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775023722560,"sku":"3RV2021-4FA10","price":2411.17,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/3RV2021-4FA10.jpg?v=1765195082","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-circuit-breaker-for-motor-protection-size-s0-34-40-a","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}