3RV2021-4EA15

The 3RV2021-4EA15 is a Siemens SIRIUS S0 case motor protection circuit breaker with a current adjustment range of 27~32A, CLASS 10 tripping class, combining thermal and electromagnetic protection, and is suitable for use in industrial motor starting circuits.

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Product Positioning

The 3RV2021-4EA15 is a Siemens SIRIUS series S0 enclosure motor protection circuit breaker with a current adjustment range of 27~32A, providing CLASS 10 overload and short circuit protection.

Core Product Advantages and Features

Adjustable overload knob

The panel features a rotating current dial, which allows setting the overload trip value within the range of 27~32A to meet the rated current requirements of different motors.

Short circuit electromagnetic protection

It has a built-in magnetic instantaneous trip unit, which can quickly cut off the circuit in the event of a short circuit, reducing the risk of the fault escalating.

CLASS 10 Skip Level

It adopts the CLASS 10 overload trip characteristic curve, which meets the protection requirements of motors that run continuously, such as pumps and fans.

Modular accessory compatibility

It can be paired with SIRIUS series auxiliary contacts, rotary handles and other accessory modules to expand control and monitoring functions.

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	27...32 A
Rated operating current (AC-3)	32 A
Instantaneous short-circuit tripping current (N-release)	400 A

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