3RV2021-4NA10

SIRIUS 3RV2021-4NA10, S0 frame motor protection circuit breaker, adjustable current 23-28A, screw terminals, instantaneous trip 364A, breaking capacity up to 100kA at 240V, suitable for three-phase motor circuit protection below 690V.

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Siemens SIRIUS 3RV2021-4NA10 Motor Protection Circuit Breaker Product Image

Product Positioning

The SIRIUS 3RV2021-4NA10 is a basic model of Siemens S0 frame motor protection circuit breakers. It has an adjustable current range of 23 to 28A and short-circuit breaking capacity for multiple voltage levels, making it a common choice for three-phase motor protection.

Core Product Advantages and Features

Precise overload current setting

The current is adjustable from 23 to 28A, and the trip point can be set according to the motor's rated current.

Multi-voltage breaking capacity

It has corresponding short-circuit breaking capacity for different voltages from 240V to 690V, and is suitable for various power grid environments.

Secure screw terminals

The main circuit uses M4 screw terminals, which have a clear locking torque and make the wiring reliable and not easy to loosen.

Standard rail quick mount

It can be directly installed on a 35mm standard guide rail using screws or clips, making installation convenient.

project	Specification
model	3RV2021-4NA10
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 terminal (M4)
Maximum short-circuit breaking capacity Icu	240V:100kA／400V:55kA／500V:10kA／690V:4kA
Rated operating voltage	690 V AC (400 V is AC-3 rated)
Rated impulse withstand voltage	6 kV
Protection level	IP20
Extreme number	3P
External dimensions (height x width x depth)	97 x 45 x 96 mm

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