Description
The Siemens 3RV2021-1CA10 is a Size S0 Motor Starter Protector (MSP) designed to provide reliable short-circuit and overload protection for small motors in HVAC, commercial, and industrial applications. With a current adjustment range of 1.8 to 2.5 amps and convenient screw terminal connections, this compact device simplifies panel wiring while delivering dependable motor protection.
Key Features
- Motor Starter Protector (MSP) — combines motor protection and manual switching in one compact device
- Size S0 frame — space-saving design ideal for compact control panels
- Current setting range: 1.8 – 2.5 A — suitable for small fractional and single-phase motors
- Screw terminal connections — secure, tool-assisted wiring for reliable electrical contact
- Integrated overload and short-circuit protection — eliminates the need for separate overload relays
- Manual ON/OFF switching capability — doubles as a local disconnect for motor circuits
- Compatible with Siemens 3RV2 series accessories — allows system expansion with auxiliary contacts, shunt trips, and more
Typical Applications
- HVAC blower and fan motor protection
- Pump motor control panels
- Commercial and light industrial motor branch circuit protection
- Building automation and mechanical room control panels
Product Specifications
- Brand: Siemens
- SKU / Part Number: 3RV2021-1CA10
- Series: 3RV2021
- Frame Size: S0
- Current Range: 1.8 – 2.5 A
- Terminal Type: Screw
- Device Type: Motor Starter Protector (MSP)
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