Siemens ET 200pro 3RK1304-5KS40-4AA0 DSe Direct Starter

Overview

Siemens · SIMATIC ET 200pro

3RK1304-5KS40-4AA0 DSe Standard Direct Motor Starter

Siemens 3RK1304-5KS40-4AA0 is an ET 200pro DSe standard direct starter with a 0.15 to 2 A adjustment range for three-phase motors up to 0.9 kW at 400 V.

At a Glance

Brand	Siemens
Model	3RK1304-5KS40-4AA0
Product Type	Distributed direct motor starter
Core Function	Switches and protects a three-phase motor with adjustable electronic overload protection in ET 200pro
Application or Compatible Series	Decentralized conveyor, material-handling and machine drives using the SIMATIC ET 200pro station

Direct Motor Starting

Switch a three-phase motor directly through the electromechanical main circuit.

Electronic Overload Protection

Set the motor current within the 0.15 to 2 A adjustment range.

Distributed Installation

Integrate the starter into an ET 200pro station close to the motor.

Product Overview

Siemens 3RK1304-5KS40-4AA0 is an ET 200pro DSe standard direct starter with a 0.15 to 2 A adjustment range for three-phase motors up to 0.9 kW at 400 V.

The unit combines direct switching and electronic motor protection in one distributed module. The adjustable current range covers small three-phase motors up to the documented power limit. Mechanical and electrical interfaces are designed for the modular distributed I/O station.

Ordering focus: confirm the complete DSe article number, 0.15 to 2 A range, no-brake-output variant, motor voltage and power, ET 200pro station position and saved overload setting.

Key Functions

Compact Starter Function

The unit combines direct switching and electronic motor protection in one distributed module.

Wide Motor Range

The adjustable current range covers small three-phase motors up to the documented power limit.

ET 200pro Integration

Mechanical and electrical interfaces are designed for the modular distributed I/O station.

Official Specifications

Starter Type	DSe standard direct starter
Main Circuit Poles	3
Switching Technology	Electromechanical contactor
Overload Setting Range	0.15 to 2 A
Motor Protection	Electronic overload protection
Operating Voltage Range	200 to 400 V AC
Rated Operating Current	2 A at 400 V AC-3
Rated Motor Power	0.9 kW at 400 V AC-3
Motor Power Range	0.07 to 0.9 kW at 400 V, 50 Hz
Control Supply	24 V DC
Permitted Control Range	20.4 to 28.8 V DC
Mounting Orientation	Vertical or horizontal
Fixing Method	Screw fixing
Dimensions	230 × 110 × 150 mm
Maximum Installation Altitude	3500 m

Official source:Siemens official technical data for 3RK1304-5KS40-4AA0.

Frequently Asked Questions

Which motors can 3RK1304-5KS40-4AA0 start directly?

Use it with a three-phase motor whose rated current and power fall inside the starter limits.

How is overload protection set on 3RK1304-5KS40-4AA0?

Set the electronic overload value to the motor nameplate current within the 0.15 to 2 A range.

Does 3RK1304-5KS40-4AA0 include a brake output?

This DSe variant is supplied without a brake output.

Which station accepts 3RK1304-5KS40-4AA0?

Install it in a correctly configured SIMATIC ET 200pro distributed I/O station.

What should be checked before replacing 3RK1304-5KS40-4AA0?

Record the current setting, motor wiring, supply voltage and ET 200pro module arrangement.

Can 3RK1304-5KS40-4AA0 be mounted horizontally?

The documented mounting positions include both vertical and horizontal installation.

What commissioning test is required for 3RK1304-5KS40-4AA0?

Verify phase wiring, rotation direction, overload setting and controlled start-stop operation before release.

Compatibility & Ordering Notes

Before ordering 3RK1304-5KS40-4AA0: confirm the complete DSe article number, 0.15 to 2 A range, no-brake-output variant, motor voltage and power, ET 200pro station position and saved overload setting.

Compatibility Checklist

• Use a motor within the specified current and power limits.
• Match the starter position to the ET 200pro station configuration.
• Provide the documented 24 V DC control supply.
• Retain the motor current setting and phase wiring before replacement.
• Test rotation and overload response after commissioning.

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