Buy genuine Siemens 3RV2021-4FA10 online
The Siemens 3RV2021-4FA10 is a high-quality motor protection circuit breaker designed for reliable industrial automation applications. This compact and robust device offers adjustable overload protection with a setting range of 34 to 40 amps, providing optimal motor safeguarding with class 10 trip characteristics. Featuring magnetic short circuit protection, phase failure detection, and screw terminal connections, it is engineered for simplified installation on standard 35mm DIN rails. The 3RV2021-4FA10 integrates overload, short circuit, and disconnect functions, making it ideal for motor control and protection in demanding environments. UL-approved and compliant with Type E protection, this circuit breaker ensures enhanced safety and operational efficiency in your control panel setups.
Key Features of Siemens 3RV2021-4FA10
- Adjustable overload current setting from 34 to 40 amps to match motor requirements
- Class 10 overload trip with fast response for motor protection
- Magnetic short circuit trip element with 480A instantaneous rating
- Screw terminal connections for secure wiring and easy maintenance
- DIN rail mounting for quick and flexible installation
- Phase failure detection built-in to prevent motor damage
- Type E protection approval for self-protected combination motor control
- UL listed, suitable for use downstream of fuses or circuit breakers
- Compact size (circuit breaker size S0) for efficient panel layouts
Explore Siemens 3RV2021-4FA10 specifications for detailed parameters
| Parameter |
Specification |
| Rated Current |
34–40 A adjustable |
| Short-Circuit Trip Current |
480 A |
| Overload Protection Class |
Class 10 |
| Mounting |
35mm DIN Rail |
| Connection Type |
Screw Terminals |
| Voltage Rating |
Up to 690 V AC |
| UL Approval |
Yes |
| Operating Mechanism |
Selector Switch |
Applications / Use Case
This Siemens 3RV2021-4FA10 is commonly used in industrial automation environments worldwide. It provides reliable motor protection in process control systems, machine automation units, and production line installations. Its compact size and comprehensive motor safeguard features make it suitable for factory control panels, conveyor systems, and other motion control setups where ensuring motor safety and uninterrupted operation are critical. This device is ideal for integration with Siemens contactors to achieve full motor protection and control functionality.
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