3RV2021-4NA15

SIRIUS 3RV2021-4NA15, S0 frame motor protection circuit breaker, adjustable current 23-28A, screw terminals, built-in 1NO+1NC auxiliary switch, instantaneous trip 364A, maximum breaking capacity of 55kA at 400V.

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Siemens SIRIUS 3RV2021-4NA15 Motor Protection Circuit Breaker Product Image

Product Positioning

The SIRIUS 3RV2021-4NA15 is a Siemens S0 frame motor protection circuit breaker with an adjustable current range of 23 to 28A and a built-in auxiliary switch. It is suitable for small and medium-sized motor circuits that require feedback of operating status to the control system.

Core Product Advantages and Features

Built-in auxiliary switch

The main unit has a built-in 1NO+1NC horizontal auxiliary switch, which can provide feedback on the operating status without the need to purchase a separate module.

Secure screw terminals

Both the main circuit and the control circuit use screw terminals, and the wiring is secure and suitable for long-term operating environments.

High short-circuit breaking capacity

The maximum short-circuit breaking capacity Icu at 400V reaches 55kA, and the operational breaking capacity Ics reaches 25kA.

Precise overload current setting

The adjustable current range is 23 to 28A, which can accurately protect the motor by matching its rated current.

project	Specification
model	3RV2021-4NA15
Frame size	S0
Overload current adjustable range	23...28 A
Instantaneous short-circuit release value (N-release)	364 A
Break away from level	CLASS 10
Terminal type	Screw terminals
Auxiliary switch	Built-in 1NO+1NC horizontal auxiliary switch
Maximum short-circuit breaking capacity Icu (400V)	55 kA
Operating short-circuit breaking capacity Ics (400V)	25 kA
Extreme number	3P
External dimensions (height x width x depth)	97 x 45 x 97 mm
Installation method	35mm standard guide rail

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