3RV2031-4WB15

Siemens 3RV2031-4WB15 Class 20 Motor Protection Circuit Breaker
Siemens 3RV2031-4WB15 Class 20 Motor Protection Circuit Breaker

The Siemens SIRIUS 3RV2031-4WB15 features an S2 housing, Class 20 trip rating, 42...52A overload adjustment, 741A instantaneous trip, and built-in 1 NO + 1 NC auxiliary contacts. It weighs approximately 1.22 kg.

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Siemens 3RV2031-4WB15 Class 20 Motor Protection Circuit Breaker
Product Positioning

The 3RV2031-4WB15 is an S2 frame model with an overload range of 42...52A. It adopts the Class 20 skip rating and has 1 NO+1 NC auxiliary contacts built in, making it suitable for motor applications with long start-up times and requiring status signal feedback.

Core Product Advantages and Features
Class 20 Long Jump Characteristics
It has a longer break-out time than Class 10, making it suitable for motor loads with high starting current and long start-up time.
Built-in 1 NO + 1 NC auxiliary contact
The circuit breaker's operating status can be directly fed back to the control circuit, eliminating the need for additional auxiliary contact modules.
Overload current adjustable from 42 to 52A
The rotary overload current setting corresponds to a motor rated current range of 42 to 52 amps.
Short circuit breaking capacity up to 100kA
With a breaking capacity of 100kA at 240V, it provides reliable short-circuit protection margin.
project Specification
Instantaneous short-circuit trip current (N-release) 741A
Overload adjustment current range (A-release) 42...52A
Break away from level Class 20
Built-in auxiliary contacts 1 NO + 1 NC (horizontal)
Short-circuit breaking capacity Icu 100kA(240V)/65kA(400V)/8kA(500V)/4kA(690V)
Operating short-circuit breaking capacity Ics 100kA(240V)/30kA(400V)/4kA(500V)/2kA(690V)
net weight Approximately 1.22 kg
Frame size S2
Extreme number 3P
Rated insulation voltage AC 690V
Applicable power supply voltage range AC 20...690V
Terminal type Screw terminals
Available wire diameter 2x (1...35mm²) or 1x (1...50mm²)
Protection level IP20
External dimensions (height x width x depth) 140 x 55 x 149 mm

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