Description
The Siemens 3RV2021-1FA10 is a compact, high-performance motor starter protector engineered to provide reliable short-circuit and overload protection for three-phase and single-phase motors in commercial and industrial HVAC applications. Designed for use in motor starter combinations, this device offers a current setting range of 3.5 to 5A, making it well-suited for protecting fractional and small integral horsepower motors commonly found in air handling units, pumps, compressors, and fan systems.
Key Features
- Current setting range: 3.5–5A for precise motor protection
- Provides integrated short-circuit and overload protection in a single compact device
- Designed for use in direct-on-line and reversing motor starter combinations
- Suitable for three-phase and single-phase motor applications
- Manual ON/OFF switching capability for local motor isolation
- Compact S00 frame size for space-saving panel installation
- Compatible with Siemens 3RV2 series accessories and add-on modules
- Trip-free mechanism prevents resetting under fault conditions
Application
The 3RV2021-1FA10 is ideal for HVAC and building automation systems requiring dependable motor branch circuit protection. It is commonly used to protect motors driving pumps, fans, blowers, and compressors in commercial mechanical rooms and industrial control panels. Its compact footprint and modular design allow for easy integration into existing Siemens control panel assemblies.
Why Choose Siemens Motor Starter Protectors
Siemens 3RV2 series motor starter protectors are engineered for long service life and consistent performance in demanding environments. Their combination of overload and short-circuit protection eliminates the need for separate fusing in many applications, simplifying panel design and reducing installation time. The 3RV2021-1FA10 is a trusted solution for HVAC professionals and electrical contractors seeking reliable, code-compliant motor protection.
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