3RV2021-4FA15

SIRIUS 3RV2021-4FA15, S0 frame motor protection circuit breaker, adjustable current 34-40A, screw terminals, built-in 1NO+1NC auxiliary switch, instantaneous trip 480A, CLASS 10 overload characteristic, suitable for medium and large three-phase motors.

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Siemens SIRIUS 3RV2021-4FA15 Motor Protection Circuit Breaker Product Image

Product Positioning

The SIRIUS 3RV2021-4FA15 is a Siemens S0 frame motor protection circuit breaker with an adjustable current range of 34 to 40A and a built-in auxiliary switch. It is suitable for medium and large three-phase motor protection circuits that require status feedback.

Core Product Advantages and Features

Built-in auxiliary switch

The circuit breaker has a built-in 1NO+1NC horizontal auxiliary switch, which can directly feed back the circuit breaker's operating status.

High current adjustable range

The overload current is adjustable from 34 to 40A, making it suitable for motor applications with higher current requirements in this series.

Secure screw terminals

Both the main circuit and the auxiliary circuit adopt a screw terminal design, ensuring that the wiring is stable and not easily loosened during long-term use.

CLASS 10 breakout feature

In case of overload, it operates according to the CLASS 10 standard time, balancing startup stability and protection response speed.

project	Specification
model	3RV2021-4FA15
Frame size	S0
Overload current adjustable range	34...40 A
Instantaneous short-circuit release value (N-release)	480 A
Break away from level	CLASS 10
Terminal type	Screw terminals
Auxiliary switch	Built-in 1NO+1NC horizontal auxiliary switch
Rated operating voltage	690 V AC
Extreme number	3P
Installation method	35mm standard guide rail

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