3RV2021-4EA25
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$125.80
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Buy genuine Siemens 3RV2021-4EA25 online
The Siemens 3RV2021-4EA25 is a high-quality motor protection circuit breaker from the trusted SIRIUS series, designed to deliver reliable overload and short-circuit protection for electric motors. Featuring a compact S0 size frame, this circuit breaker covers current ratings from 27 to 32 amps and supports a maximum short-circuit breaking capacity of up to 100 kA at 240 V. Its robust construction, including spring-type terminals and a transverse auxiliary switch, ensures ease of installation and secure connections. The 3RV2021-4EA25 is engineered with a Class 10 trip unit and a thermal overload release for precise motor safeguarding. Rated for use up to 690 V AC with a surge voltage resistance of 6 kV, this device meets demanding industrial requirements with IP20 protection on both the front and terminals. Siemens’ commitment to quality and safety makes the 3RV2021-4EA25 ideal for ensuring motors operate smoothly and protected from electrical faults.
Key Features of Siemens 3RV2021-4EA25
- Motor protection circuit breaker with Class 10 thermal overload release
- Rated operating current: 27...32 A
- Maximum short-circuit breaking capacity: 100 kA (240 V)
- Spring-loaded terminals for secure wiring and easy installation
- Transverse auxiliary switch with 1 NO + 1 NC contact configuration
- Rated insulation voltage of up to 690 V and surge resistance of 6 kV
- IP20 protection degree for operator safety and terminal protection
- Mechanical and electrical durability of up to 100,000 switching cycles
- Compact S0 frame size ideal for space-saving panel designs
Technical Specs of 3RV2021-4EA25
Explore Siemens 3RV2021-4EA25 specifications covering voltage, I/O, and communication for detailed parameters.
| Parameter | Specification |
|---|---|
| Frame size | S0 |
| Current range | 27 - 32 A |
| Rated operational voltage | Up to 690 V AC |
| Short-circuit breaking capacity (Icu) | 100 kA @ 240 V AC |
| Auxiliary contacts | 1 NO + 1 NC transverse switch |
| Trip class | Class 10 (thermal overload) |
| Protection degree | IP20 (front and terminals) |
| Operating temperature | -20 to +60 °C |
Applications / Use Case
This Siemens 3RV2021-4EA25 is commonly used in industrial automation environments where reliable motor protection is essential. It safeguards motors in machine automation, production line systems, and factory control panels against overloads and short circuits. Its robust performance under high electrical loads makes it suitable for packaging lines, conveyor operations, and process control applications. The device’s compact design facilitates integration into control systems where space is limited but performance and safety standards cannot be compromised. Its longevity and compliance with IEC standards make it an excellent choice for engineers and maintenance teams seeking dependable motor protection solutions.
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