3RV2042-4JB10

The Siemens SIRIUS 3RV2042 series S3 frame motor protection circuit breaker features 20 trip levels, a current rating of 45~63A, and an instantaneous trip rating of 819A. It adopts an enhanced 100kA high breaking capacity design and is suitable for heavy-load starting motor circuits and short-circuit protection.

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Siemens SIRIUS 3RV2042-4JB10 Motor Protection Circuit Breaker 45-63A

Product Positioning

The 3RV2042-4JB10 is a Siemens SIRIUS series S3 frame motor protection circuit breaker, offering 20 levels of delayed tripping characteristics and a 100kA boosted breaking capacity, making it suitable for heavy-duty motor applications with long start-up times.

Core Product Advantages and Features

S3 frame, current 45~63A

It adopts the SIRIUS 3RV2 S3 standard frame design, with a current setting range of 45~63A, and the protection point can be finely adjusted according to the actual motor rated current.

20-level tripping characteristics

It belongs to IEC 60947-4-1 Class 20 delayed trip, which allows for a longer start-up time and is suitable for motor circuits with large inertia or heavy load start-up.

Enhanced 100kA breaking capacity

With an instantaneous trip current of 819A, it features an enhanced switching capacity design and a short-circuit breaking capacity of up to 100kA, thus strengthening the system protection margin.

Screw terminals and IP20 protection

It features screw-type terminal connections, an IP20 protection rating on the panel, and a finger safety design, and can be directly mounted on a 35mm DIN rail.

project	Specification
model	3RV2042-4JB10
Product Series	Siemens SIRIUS 3RV2
Frame size	S3
Extreme number	3P
Trip-off level	CLASS 20
Current setting range (A-release)	45...63 A
Instantaneous trip current (N-release)	819 A
Segmentation Ability Level	Increased switching capacity 100kA
Rated operating voltage	AC 20...690 V
Terminal type	Screw terminals
Protection level	IP20, finger safety design
Installation method	35mm DIN rail clamping/screw fixing
Mechanical life	25,000 times
Shell dimensions (height x width x depth)	Approximately 165 x 70 x 176 mm

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