3RV2021-4DA16

The RV2021-4DA16 is a Siemens SIRIUS S0 case motor protection circuit breaker with a current adjustment range of 18~25A, a rated operating current of 25A, and a tripping class of CLASS 10. It is suitable for use in various motor starting protection circuits.

Share To

Product image of Siemens SIRIUS 3RV2021-4DA16 motor protection circuit breaker

Product Positioning

The 3RV2021-4DA16 is a Siemens SIRIUS series S0 case motor protection circuit breaker with a current adjustment range of 18~25A, providing CLASS 10 overload and short circuit protection.

Core Product Advantages and Features

Continuously Adjustable Overload Setting

The current adjustment knob can be continuously set in the range of 18~25A, and can be precisely adjusted according to the rated current of the motor to break through the threshold.

Transient short circuit protection

The electromagnetic instantaneous tripping mechanism operates instantly upon the occurrence of a short circuit, quickly isolating the faulty circuit and reducing damage.

High breaking capacity design

It has a maximum short-circuit breaking capacity of 55kA at 400V, providing sufficient system protection margin.

Annex Compatibility Extension

It can be paired with SIRIUS series auxiliary contacts, alarm units and other accessory modules to expand monitoring functions as needed.

project	Specification
Product Type	SIRIUS 3RV2 Series Motor Protection Circuit Breaker (Motor Starting Protector)
Casing size	S0
Extreme number	3P
Break away from level	CLASS 10
Rated insulation voltage	690V AC (Pollution Level 3)
Short-circuit breaking capacity Icu	240V:100kA / 400V:55kA / 500V:10kA / 690V:4kA
Protection level	IP20
Installation method	35mm standard guide rail (DIN EN 60715), screw fixing + snap-on installation.
Applicable Standards	IEC/EN 60947-4-1
Current adjustment range	18...25 A
Rated operating current (AC-3)	25 A
Instantaneous short-circuit tripping current (N-release)	325 A

Recommend

3RV2021-4DA20

The Siemens SIRIUS 3RV2021-4DA20 motor protection circuit breaker has a housing size of S0, a current adjustment range of 18~25A, a rated operating current of 25A, and spring-loaded terminals. It is suitable for motor overload and short-circuit protection circuits.

3RV2021-4DA15

The 3RV2021-4DA15 is a Siemens SIRIUS S0 case motor protection circuit breaker with a current adjustment range of 18~25A, CLASS 10 tripping class, combining thermal and electromagnetic protection, and is suitable for use in industrial motor starting circuits.

3RV2021-4DA10

Siemens SIRIUS 3RV2021-4DA10 motor protection circuit breaker, housing size S0, current adjustment range 18~25A, rated operating current 25A, screw-type terminal design, suitable for overload and short circuit protection in motor starting circuits.