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header-product Siemens Power Contactor 3RT2023-1BB40 9A 3-pole 4kW 1NO 1NC 24V DC Size S0
88.99 €
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Siemens Power Contactor 3RT2023-1BB40 9A 3-pole 4kW 1NO 1NC 24V DC Size S0

Siemens Power Contactor 3RT2023-1BB40 Photo 1
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Siemens Power Contactor 3RT2023-1BB40 Photo 1
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Siemens Power Contactor 3RT2023-1BB40 Photo 1
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Siemens Power Contactor 3RT2023-1BB40 Photo 1
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Siemens Power Contactor 3RT2023-1BB40 9A 3-pole 4kW 1NO 1NC 24V DC Size S0
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Short description

Siemens power contactor model 3RT2023-1BB40 designed for industrial electrical control applications. This 3-pole AC-3 device supports a 4kW power rating at 9A operational current, featuring a 24V DC control supply voltage and auxiliary contacts 1NO and 1NC in size S0. Ideal for reliable switching of electric motors and power circuits.
Available for order: 22 pcs.
Warranty: 2 Years
SKU: 12634486
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1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
13.10.2026 {{selectedOffer.officeDeliveryString}}
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16.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.60 kg)
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Product information

Description

The Siemens Power Contactor is an advanced industrial electrical control device engineered for the reliable switching of electric motors and power circuits. As part of the modular SIRIUS system, this 3-pole AC-3 device offers high contact reliability and robust performance from a compact design size S0. It supports a 4kW power rating at 400V with a 9A operational current and features a 24V DC control supply voltage. Built with integrated auxiliary contacts including 1 NO and 1 NC, it reduces wiring complexity and integrates smoothly into various industrial automation setups.

Advantages

This power contactor features a climate-resistant design that is approved for worldwide use and is fully IE3 and IE4-ready. Its modular SIRIUS architecture allows seamless combination with other matched components, such as load feeders, auxiliary switches, and infeed systems, reducing overall wiring effort. Front-panel screw terminals simplify installation, while integrated auxiliary switches decrease the complexity of electrical designs. The unit is optimized for stable performance and high contact reliability across demanding industrial environments.

Suitable for

  • Switching and controlling electric motors in industrial applications
  • Integration into modular SIRIUS load feeders and automation systems
  • Applications requiring a 24V DC control supply voltage
  • Power circuit switching up to 4kW at 400V

When it may not be suitable

This device is not designed for residential or consumer electrical installations where industrial control components are unnecessary. It is also unsuitable for applications requiring alternating current control supply voltage, as this specific model operates exclusively on 24V DC.

Key specifications

  • 3-pole power contactor configuration
  • Operational current: 9 A
  • Power rating: 4 kW at 400 V
  • Control supply voltage: 24 V DC
  • Auxiliary contacts: 1 NO and 1 NC
  • Size: S0
  • Connection type: Screw terminal
  • Height: 85 mm

How to use

Mount the power contactor securely onto a compatible mounting surface or within an industrial control panel. Connect the main power circuits and motor lines to the appropriate screw terminals, ensuring proper tightening to maintain a secure and vibration-resistant connection. Connect the 24V DC control supply to the designated coil terminals and wire the integrated auxiliary contacts into your control and signaling logic. Verify all connections against the technical specifications before energizing the system.

What to consider before purchase

  • Verify that the operational current and power rating match your motor or circuit requirements
  • Ensure a 24V DC control supply voltage is available in your control panel
  • Check that size S0 physical dimensions fit within your available enclosure space

Usage recommendations

Always ensure that electrical installation and maintenance are performed by qualified professionals in accordance with local safety regulations and standards. Regularly inspect screw terminals for tightness and check the device for any signs of environmental wear or contamination in industrial settings.
All features
Package weight: Weight of the packaged product.
604 g
Height: The measurement of the product from head to foot or from base to top.
85 mm
Package depth: The distance from the front to the back of the packaging.
92 mm
Package height: The distance from the top to the bottom of the packaging.
115.5 mm
Package width: The distance from one side of the packaging to the other.
54 mm
Minimum order quantity:
1 pc(s)
Battery included:
No
Maximum order quantity:
1 pc(s)
Compliance certificates: Indicates which regulatory, safety, and environmental standards the product complies with, as verified by recognized authorities or certification bodies.
RoHS, CE
Main circuit connection type:
Screw connection
Number of auxiliary NC contacts:
1
Number of auxiliary NO contacts:
1
Actuating voltage type:
DC
Rated operational power (AC-3, 400V):
4 kW
Suitable for distribution boards:
Yes
Operating voltage AC (50Hz):
690
Operating coltage AC (60Hz):
690
Number of NO main contacts:
3
Rated operation current (Ie at AC-3, 400V):
9 A
Number of NC main contacts:
0
Rated operation current (Ie at AC-1, 400V):
40 A
Rated operation power (NEMA):
5 hp
Rated operation current (Ie at AC-4, 400V):
8.5 A

Description

Machine translation. Load original

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Product comparison

The power contactor Siemens Power Contactor 9A 3P 24V DC 1NO 1NC S0 3RT2023-1BB40 is compared with several alternative devices from Siemens and Eaton. All units are designed for electrical switching in industrial automation, but they differ in current ratings, control coil voltages, auxiliary contact configurations, and physical frame sizes.

⚙️ The table below compares the main technical parameters: rated operational current, number of poles, control supply voltage, auxiliary contacts, frame size, and practical differences for application.

ParameterSiemens Power Contactor 9A 3P 24V DC 1NO 1NC S0 3RT2023-1BB40Siemens 3RT2024-2BB40EATON Power Contactor 6A 3P 24V DC 1 NO 189980Siemens 3RT2026-2AP00Eaton DILM38-01-EASiemens Contactor 3RT20271AL20Practical Significance
Device TypePower ContactorPower ContactorPower ContactorPower ContactorPower ContactorPower ContactorAll products perform electrical switching for industrial loads.
BrandSiemensSiemensEATONSiemensEATONSiemensDetermines manufacturer ecosystem compatibility and installation specifics.
Number of Poles3 Poles3 Poles3 Poles3 Normally Open Contacts3 Poles3 PolesAll product options are designed for three-phase power circuits.
Rated Current9 A12 A6 A11 kW (Capacity)38 A32 AProvides different current load capacities to match specific motor requirements.
Coil Voltage24 V DC24 V DC24 V DC230 V AC24 V DC230 V 50/60 Hz ACMust match the existing control system supply type (direct or alternating current).
Auxiliary Contacts1 NO / 1 NCNot specified1 NONot specified0 NO / 1 NC1 NO / 1 NCDefines capabilities for connecting signaling and interlocking circuits.
Frame SizeSize S0Size S0Not specifiedNot specifiedNot specifiedSize S2Affects physical dimensions and panel layout density.

◎ The table below shows the suitability of each product for different use cases and buyer needs.

Use CaseRecommended ProductWhy
Standard motor control up to 9 A with 24 V DC control supply voltageSiemens Power Contactor 9A 3P 24V DC 1NO 1NC S0 3RT2023-1BB40Provides an exact 9 A rating, compact S0 frame size, and standard 24 V DC coil voltage.
Switching loads up to 12 A with 24 V DC controlSiemens 3RT2024-2BB40Suitable for applications requiring a higher current margin within the same compact S0 size.
Low-power control circuits up to 6 A with 24 V DCEATON Power Contactor 6A 3P 24V DC 1 NO 189980Serves as an Eaton alternative for lower-current control circuit requirements.
Applications using 230 V AC control supply voltageSiemens 3RT2026-2AP00 or Siemens Contactor 3RT20271AL20Suitable for systems utilizing an alternating current control voltage of 230 V instead of 24 V DC.
Heavy industrial loads up to 38 AEaton DILM38-01-EAEngineered for significantly higher current requirements in power distribution systems.

The Siemens Power Contactor 9A 3P 24V DC 1NO 1NC S0 3RT2023-1BB40 is best suited for standard industrial control tasks requiring a 9 A rating and a 24 V DC control supply voltage in a compact S0 frame. Choose it if you need an exact 9 A match and built-in 1NO/1NC auxiliary contacts. Alternative models are preferable when working with different current ratings (6 A, 12 A, 32 A, 38 A) or when using AC control voltages (230 V).

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How much does the Siemens Power Contactor 3RT2023-1BB40 cost, and is it available for purchase?

The price is 88.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 13.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

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Can Siemens Power Contactor 3RT2023-1BB40 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Siemens Power Contactor 3RT2023-1BB40 online, and the application process is as simple as possible:
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What is the warranty period?

All Siemens products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Siemens service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

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