Product Description

Siemens SIRIUS Power Contactor 9A, 4kW, 400V, 3-Pole, 230V AC, Size S0 – 3RT2023-1AL208K

Product Description

The Siemens 3RT2023-1AL208K is a SIRIUS 3RT2 power contactor designed for reliable switching and control of three-phase motors and industrial electrical loads. It is rated 9A for AC-3e/AC-3 applications and is suitable for motors up to 4kW at 400V. The contactor features a 230V AC control voltage at 50/60Hz, 3 main poles, 1 NO + 1 NC auxiliary contacts, screw terminal connections, and a compact S0 size.

It is suitable for DOL motor starters, pump systems, compressors, conveyors, HVAC equipment, industrial machinery, OEM control panels, and factory automation applications.

Key Features

• Brand: Siemens

• Product Family: SIRIUS 3RT

• Model: 3RT2023-1AL208K

• Utilization Category: AC-3e/AC-3

• Rated Operational Current: 9A

• Motor Rating: 4kW at 400V

• Main Circuit: 3-pole

• Control Voltage: 230V AC

• Control Frequency: 50/60Hz

• Auxiliary Contacts: 1 NO + 1 NC

• Terminal Type: Screw terminal

• Contactor Size: S0

Applications

• Three-phase motor control

• DOL motor starters

• Motor Control Centers (MCC)

• Pump control panels

• Compressor systems

• Conveyor systems

• HVAC equipment

• Industrial automation

• Manufacturing machinery

• OEM control panels

Benefits

• Reliable 9A AC-3e/AC-3 switching

• Suitable for motors up to 4kW at 400V

• 230V AC, 50/60Hz control supply

• 1 NO + 1 NC auxiliary contacts

• Secure screw-terminal connections

• Compact S0 design

• Suitable for industrial motor-control applications

• Easy integration into automation and control panels

• Reliable Siemens SIRIUS technology

Frequently Asked Questions

Q1. What is Siemens 3RT2023-1AL208K used for?

It is used for switching and controlling three-phase motors and industrial electrical loads in motor-control and automation systems.

Q2. What is the rated current?

The contactor is rated 9A in AC-3e/AC-3 applications.

Q3. What motor power can it handle?

It is suitable for motors up to 4kW at 400V.

Q4. What is the control voltage?

The contactor has a 230V AC control voltage at 50/60Hz.

Q5. How many auxiliary contacts are provided?

It provides 1 NO + 1 NC auxiliary contacts.

Q6. What type of terminals does it use?

The contactor uses screw terminal connections.

Q7. What is the contactor size?

The 3RT2023-1AL208K is a Size S0 contactor.

Q8. Is it suitable for a 7.5kW motor?

No. The 3RT2023-1AL208K is rated for 4kW at 400V. For a 7.5kW motor, a higher-rated contactor such as the 3RT2025 series should be selected.

Q9. Can it be used in a DOL starter?

Yes. It can be used as the main contactor in a DOL motor starter when paired with a suitably rated motor-protection device.

Q10. What are the main specifications?

The main specifications are 9A AC-3e/AC-3, 4kW at 400V, 3-pole, 230V AC 50/60Hz control, 1 NO + 1 NC auxiliary contacts, screw terminals, and S0 size.