3RV2021-4AA10

Close-up of the wiring terminals of the Siemens 3RV2021-4AA10 SIRIUS motor starter protector.
Close-up of the wiring terminals of the Siemens 3RV2021-4AA10 SIRIUS motor starter protector.

The Siemens SIRIUS 3RV2021-4AA10 is an S0-size three-pole motor starter protector with a current adjustment range of 10~16A. It uses screw-type terminal connections, has a 208A instantaneous short-circuit trip, and a rated operating voltage of up to 690V AC. It is suitable as a standard overload and short-circuit protection element for various three-phase motor circuits.

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Close-up of the wiring terminals of the Siemens 3RV2021-4AA10 SIRIUS motor starter protector.
Product Positioning

The Siemens SIRIUS 3RV2021-4AA10 is an S0-size three-pole motor starter protector with a current adjustment range of 10~16A. It provides standard overload and short-circuit protection and is suitable for various three-phase motor circuits.

Core Product Advantages and Features
10~16A thermal-magnetic protection
The overload current can be adjusted in the range of 10~16A, and it has a 208A instantaneous short circuit trip, which meets the dual protection requirements of overload and short circuit.
Screw terminal connection
Featuring a screw-type terminal design, the wiring is secure and reliable, making it suitable for installation and maintenance using standard wiring tools.
Applicable to up to 690V AC
The rated operating voltage can reach up to 690V AC, and it can be flexibly applied to three-phase motor circuits of different voltage levels.
S0 standard casing
Its compact size meets S0 housing standards and can be directly snapped onto a 35mm DIN rail, improving the installation efficiency of the distribution box.
project Specification
brand Siemens
series SIRIUS 3RV2021
Product Category Motor starting protector (motor protection circuit breaker)
Casing size S0
Extreme number 3P
Current adjustment range 10~16A
Instantaneous short circuit trip current 208A
Rated operating voltage Up to 690V AC
Rated short-circuit breaking capacity Icu (690V) 4kA
Break away from level Class 10
Terminal blocks Screw terminal
Protection level IP20
Installation method 35mm DIN rail
Operating ambient temperature -20°C ~ +60°C

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