3RV2042-4FB10

Siemens SIRIUS 3RV2042-4FB10 Motor Protection Circuit Breaker 28-40A
Siemens SIRIUS 3RV2042-4FB10 Motor Protection Circuit Breaker 28-40A

The Siemens SIRIUS 3RV2042-4FB10 is an S3 frame motor protection circuit breaker with 20 trip levels, a current rating of 28~40A, an instantaneous trip rating of 520A, and an enhanced breaking capacity of 100kA. It is suitable for small and medium power motor circuits.

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Siemens SIRIUS 3RV2042-4FB10 Motor Protection Circuit Breaker 28-40A
Product Positioning

The 3RV2042-4FB10 is a SIRIUS 3RV2 series S3 frame motor protection circuit breaker. It is the model with the smallest current range in this batch of 3RV2042 series, providing 20 tripping levels and an enhanced 100kA breaking capacity.

Core Product Advantages and Features
Current setting 28~40A
Suitable for three-phase motors with relatively low rated current, the overload protection point can be finely adjusted according to the actual motor nameplate current to improve protection accuracy.
20-level delayed tripping characteristics
It allows for a longer start-up time and is suitable for applications involving motors with high load inertia and high starting current.
Enhanced 100kA breaking capacity
With an instantaneous trip current of 520A, it features an enhanced switching capacity design, strengthening the breaking safety during short-circuit faults.
Compact S3 frame design
It shares the S3 frame and external dimensions with other current specifications in the same series, which facilitates standardized selection of distribution panels and spare parts management.
project Specification
model 3RV2042-4FB10
Product Series Siemens SIRIUS 3RV2
Frame size S3
Extreme number 3P
Trip-off level CLASS 20
Current setting range (A-release) 28...40 A
Instantaneous trip current (N-release) 520 A
Segmentation Ability Level Increased switching capacity 100kA
Rated operating current 40 A
Terminal type Screw terminals
Rated operating voltage AC 20...690 V
Installation method 35mm DIN rail clamping/screw fixing

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