3RV2031-4VA15

Model 3RV2031-4VA15, SIRIUS 3RV2031 series, current setting range 35–45A, screw terminals with built-in auxiliary contact module, three-pole structure, suitable for motor overload and short circuit protection, conforms to IEC 60947-4-1 standard.

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Siemens SIRIUS 3RV2031-4VA15 Motor Protection Circuit Breaker (Screw Terminal, 35–45A)

Product Positioning

The 3RV2031-4VA15 is a Siemens SIRIUS 3RV2031 series thermal-electromagnetic motor protection circuit breaker with a current adjustment range of 35–45A. It features screw terminals and factory-built-in 1NO+1NC auxiliary contacts for easy feedback of the circuit breaker's operating status, making it suitable for three-phase motor circuits requiring remote monitoring.

Core Product Advantages and Features

Adjustable current range: 35–45A

The rotary current setting has an adjustment range of 35–45A, allowing for precise setting of the trip value based on the actual rated current of the motor, thus avoiding insufficient protection margin or over-protection.

Thermal-magnetic dual trip protection

Built-in thermal overload element and electromagnetic instantaneous trip mechanism can simultaneously cope with long-term motor overload and short circuit faults, in compliance with IEC/EN 60947-4-1 standard.

Screw terminal wiring

The design uses screw terminals, and the wiring method is consistent with the general operation habits of distribution boxes, making it suitable for most distribution panel installation environments in Taiwan.

Built-in auxiliary contact module

It comes equipped with 1NO+1NC auxiliary contacts at the factory, which can feed back the tripping or disconnection status of the circuit breaker to the control circuit or PLC, making it easy to monitor the operating status of the motor circuit.

Rotating handle operation and test jump function

The panel features an ON/OFF rotary handle and clear trip indicators, and provides a test button for convenient periodic functional testing and maintenance.

project	Specification
Product Type	Heat accumulation electromagnetic motor protection circuit breaker (MPCB)
Product Series	SIRIUS 3RV2031
Frame size	S2
Current setting range	35–45A
Extreme number	3P (Triple Pole)
Terminal type	Screw terminals
Rated operating voltage	690V AC
Short circuit breaking capacity	4kA (690V)
Protection level	IP20
Applicable Standards	IEC/EN 60947-4-1, DIN VDE 0660
Installation method	35mm standard DIN rail
Overload tripping characteristics	Class 10
Auxiliary contacts	Built-in 1NO+1NC (standard configuration)
Operation method	Rotate the handle ON/OFF; includes a jump indicator and a test jump button.

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