3RW4037-2TB04

SIRIUS 3RW40 series S2 frame soft starter, rated current 63A, corresponding to 30kW/400V (18.5kW/230V) three-phase motor, spring terminal wiring with built-in thermal resistor input, 24V AC/DC control power supply, IP20 protection rating.

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Siemens 3RW4037-2TB04 Soft Starter with Thermal Resistance Motor Protection (Appearance Image)

Product Positioning

The 3RW4037-2TB04 is a SIRIUS 3RW40 series S2 frame soft starter with a rated current of 63A. It is uniquely equipped with a thermal resistor (PTC) input to detect the motor winding temperature and uses spring terminals to speed up wiring.

Core Product Advantages and Features

Thermal resistor input protection

It can be directly connected to the PTC thermistor of the motor winding to detect the temperature rise in real time and trip before overheating.

Spring terminal wiring

Screwless fastening allows for quick wire crimping, making it suitable for vibrating environments and reducing the risk of loosening.

S2 base design

It shares the same external dimensions as the screw terminal models in the same series, which facilitates unified planning and configuration of the panel.

Wide power compatibility

The 200...480V AC power supply range covers the power grid standards of multiple countries and can be used in international projects.

project	Specification
Product Series	SIRIUS 3RW40 Simplified Soft Starter
Base size	S2
Rated operating current Ie	63 A
Corresponding motor power (400V)	30 kW
Corresponding motor power (230V)	18.5 kW
Rated operating voltage Ue	200...480 V AC
Control power supply voltage	24 V AC/DC
Terminal block type	Spring terminals
Motor protection methods	Thermal resistor (PTC) input
Protection level	IP20
Control Mode	Single direction control
net weight	Approximately 1.27 kg

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