3RW4037-1BB14

The SIRIUS 3RW40 series S2 base-mount soft starter has a rated current of 63A and an operating voltage of 200...480V AC. It is available with screw terminals and is compatible with 110...230V AC/DC control power supplies, making it suitable for applications requiring higher voltage in field control boxes.

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Siemens 3RW4037-1BB14 soft starter, 110-230V control voltage model (appearance image)

Product Positioning

The 3RW4037-1BB14 is a SIRIUS 3RW40 series S2 frame soft starter with a rated current of 63A. It has the same specifications as the 24V control version, except that the control power supply is changed to 110...230V AC/DC to be compatible with existing control boxes.

Core Product Advantages and Features

110-230V control power supply

It eliminates the need to install a separate 24V transformer on-site and can directly use the existing control box voltage for power supply.

Rated current is the same as the main model

The electrical characteristics, current and power are exactly the same as the 24V control model, only the control voltage is different.

Screw terminal wiring

Maintaining the traditional wiring method facilitates integration with existing panel wiring during construction.

Standard design

Without a thermal resistor input, it can meet the needs of general applications with built-in electronic overload protection.

project	Specification
Product Series	SIRIUS 3RW40 Simplified Soft Starter
Base size	S2
Rated operating current Ie	63 A
Corresponding motor power (400V)	30 kW
Rated operating voltage Ue	200...480 V AC
Control power supply voltage	110...230 V AC/DC
Terminal block type	Screw terminals
Motor protection methods	Standard type (excluding thermal resistor input)
Control method	Two-phase control, third-phase direct connection
Break away from level	Class 10
Applicable ambient temperature	-25°C to +60°C (reduction in usage is required above 40°C)
Applicable occasions	The control box is configured for three-phase motor soft-start applications with 110-230V power supply.

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The SIRIUS 3RW40 series S2 frame soft starter has a rated current of 63A and is compatible with 30kW/400V three-phase motors. It features screw terminal wiring, 24V AC/DC control power supply, and the standard model does not include a thermal resistor input. It offers advantages in both specifications and price.