3RV2021-4CA25

The 3RV2021-4CA25 is a Siemens SIRIUS S0 enclosure motor protection circuit breaker with a current adjustment range of 16~22A, a rated operating current of 22A, and conforms to IEC/EN 60947-4-1 standard. It is suitable for motor starting protection circuits.

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Product Positioning

The 3RV2021-4CA25 is a Siemens SIRIUS series S0 enclosure motor protection circuit breaker with a current adjustment range of 16~22A, providing dual protection against thermal overload and electromagnetic transient short circuit.

Core Product Advantages and Features

Precision protection for small motors

The current adjustment range is 16~22A, suitable for small and medium-sized motor circuits, and the trip value can be accurately set according to the actual rated current.

Momentary short circuit tripping

The electromagnetic instantaneous trip unit operates instantly during a short-circuit fault, quickly cutting off the circuit and reducing the risk of the accident escalating.

S0 standard enclosure compatibility

It adopts the SIRIUS series S0 standard housing and can be equipped with accessories such as auxiliary contacts and rotary handles to expand its applications.

Rail-mounted installation and maintenance are convenient.

Supports 35mm standard DIN rail clip installation, or screw fixing, facilitating quick configuration and replacement of the distribution panel.

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	16...22 A
Rated operating current (AC-3)	22 A
Instantaneous short-circuit tripping current (N-release)	286 A

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