3RW4036-1TB04

The SIRIUS 3RW40 series S2 base unit soft starter has a rated operating voltage of 200...480V AC, a built-in thermal resistor (PTC) input, screw terminal wiring, and a 24V AC/DC control power supply. It is the basic combination of the thermal resistor protection model.

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Siemens 3RW4036-1TB04 Soft Starter Thermal Resistance Standard Model Appearance Drawing

Product Positioning

The 3RW4036-1TB04 is a low-current, thermally protected soft starter in the SIRIUS 3RW40 series S2 frame, with an operating voltage of 200...480V AC, suitable for temperature monitoring needs of small and medium power motors.

Core Product Advantages and Features

Thermal resistor input protection

It directly receives signals from the motor's PTC thermistor to detect abnormal temperature rise in the windings in advance.

Standard power supply compatibility

Rated operating voltage 200...480V AC, covering common power grid specifications in Taiwan and many other countries.

24V control power supply

It is compatible with the commonly used 24V AC/DC power supply of PLCs and general control panels, making integration easy.

Screw terminal wiring

Using traditional construction methods, it is suitable for direct replacement when replacing existing models.

project	Specification
Product Series	SIRIUS 3RW40 Simplified Soft Starter
Base size	S2
Rated operating voltage Ue	200...480 V AC
Control power supply voltage	24 V AC/DC
Terminal block type	Screw terminals
Motor protection methods	Thermal resistor (PTC) input
Control method	Two-phase control, third-phase direct connection
Break away from level	Class 10
Built-in functions	Bypass contactor, adjustable current limiter
Applicable ambient temperature	-25°C to +60°C (reduction in usage is required above 40°C)
Applicable occasions	Soft start of small and medium power three-phase motors requiring monitoring of motor temperature rise
Remark	Please refer to Siemens' official selection data for the exact rated current.

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3RW4036-1TB05

SIRIUS 3RW40 Series S2 Base Soft Starter, rated operating voltage increased to 400...600V AC, built-in thermal resistor (PTC) input to monitor motor temperature rise, screw terminal wiring, 24V AC/DC control power supply.

3RW4036-1BB15

The SIRIUS 3RW40 series S2 frame soft starter has a rated operating voltage of 400...600V AC and comes with a 110...230V AC/DC control power supply and screw terminal wiring. The standard model has built-in electronic overload protection.

3RW4036-1BB14

The Siemens SIRIUS 3RW4036-1BB14 soft starter, with an S2 frame and a rated current of 45A, is suitable for 200 to 480V AC three-phase motors, corresponding to 22kW/400V. It is equipped with 110 to 230V AC/DC control voltage and screw terminals, and has a built-in bypass contact to reduce operating heat and energy consumption.