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.

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Product image of Siemens SIRIUS 3RV2021-4DA15 motor protection circuit breaker

Product Positioning

The 3RV2021-4DA15 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

Knob-type current setting

The panel has a rotating dial that allows you to set the overload trip value in the range of 18~25A, corresponding to different motor specifications.

Electromagnetic short circuit instantaneous jump

It has a built-in magnetic instantaneous trip unit, which can quickly cut off the circuit when a short circuit fault occurs, protecting downstream equipment.

CLASS 10 breakout feature

It adopts the CLASS 10 overload trip curve, which is suitable for the protection needs of continuously running motors such as pumps and conveyors.

Modular system compatibility

It can be combined with accessories such as SIRIUS series rotary handles and auxiliary contacts to form a complete motor start protection solution.

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

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