# Siemens 3TH4244-0AP0 Auxiliary Contactor, 4NO+4NC, 230V AC

**URL:** https://aio.lv/en/product--siemens-3th42440ap0--1801763
**Data updated:** 2026-05-18 02:44 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3TH42440AP0
**EAN:** 4011209047914
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 87.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 72.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3th42440ap0--1801763

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3TH4244-0AP0 is a reliable auxiliary contactor designed for industrial control and switching applications. It features a 4NO+4NC contact configuration and operates on a 230V AC coil voltage. This robust device ensures precise signal switching in electrical control circuits, providing high operational safety and long-term durability for automation systems and industrial machinery.

## Long description

The Siemens 3TH4244-0AP0 is a high-performance auxiliary contactor engineered for demanding industrial control and switching environments. Designed to facilitate reliable signal transmission within complex electrical circuits, this device serves as a critical component in automation systems, motor control centers, and industrial machinery. With its robust construction and precise contact mechanism, it ensures consistent performance and operational safety in various professional electrical installations.
Advantages
This auxiliary contactor offers exceptional reliability due to its high-quality manufacturing standards and durable internal components. The 4NO+4NC contact configuration provides significant flexibility for complex control logic, allowing for multiple simultaneous switching operations. Its 230V AC coil voltage is standard for many industrial control panels, ensuring seamless integration into existing infrastructure. The device is built to withstand frequent switching cycles, minimizing maintenance requirements and enhancing the overall longevity of the control system.
Suitable for
Industrial automation and control systems
Switching of control signals in electrical panels
Integration with motor starters and power contactors
Complex interlocking and logic circuits
This contactor is not intended for switching high-power main circuits or heavy motor loads directly, as it is specifically designed for auxiliary control signals. It may also be unsuitable for environments with extreme vibration or corrosive atmospheres unless housed within an appropriate protective enclosure.
Key specifications
Contact configuration: 4 Normally Open (NO) and 4 Normally Closed (NC)
Coil voltage: 230V AC
Application: Auxiliary control and signal switching
Design: Industrial-grade contactor for control circuits
To install the Siemens auxiliary contactor, ensure the power supply is disconnected and mount the unit onto a standard DIN rail or a flat surface within a control cabinet. Connect the control wires to the designated terminals according to the wiring diagram provided in the technical documentation. Once installed, verify that the coil voltage matches your control circuit supply before energizing the system to prevent damage to the coil.
What to consider before purchase
Verify that the 230V AC coil voltage matches your control circuit requirements
Ensure the 4NO+4NC contact arrangement meets your specific logic and interlocking needs
Check available space in your control cabinet for mounting
Confirm compatibility with existing control system components
For optimal performance and safety, always ensure that the contactor is installed by a qualified professional and that all terminal connections are tightened to the manufacturer's specified torque settings. Regularly inspect the device for signs of wear or debris accumulation to maintain reliable operation over time.

## FAQ

### How much does the Siemens 3TH4244-0AP0 Auxiliary Contactor cost, and is it available for purchase?

The price is 87.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 15.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Siemens 3TH4244-0AP0 Auxiliary Contactor be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### 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.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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