# Wago 750-303 PROFIBUS DP/FMS Fieldbus Coupler

**URL:** https://aio.lv/en/product--wago-750-303--12445778
**Data updated:** 2026-05-18 02:55 (EEST)
**Category:** Network Equipment Accessories
**Manufacturer:** Wago
**Manufacturer code:** 750-303
**EAN:** 4045454659431
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 663.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 548.75 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wago-750-303--12445778

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Wago 750-303 is a high-performance fieldbus coupler designed for PROFIBUS DP/FMS networks with a transmission rate of up to 12 MBaud. This modular device supports both digital and analog signal processing, making it an essential component for industrial automation systems. It ensures reliable data communication and seamless integration within complex control architectures, providing robust performance for demanding industrial environments.

## Long description

The Wago 750-303 PROFIBUS DP/FMS Fieldbus Coupler is a robust and efficient interface module designed to connect the WAGO-I/O-SYSTEM to the PROFIBUS fieldbus network. Engineered for high-performance industrial automation, this device supports transmission rates of up to 12 MBaud, ensuring rapid and reliable data exchange between the fieldbus master and the connected I/O modules. Its modular design allows for flexible configuration, accommodating a wide range of digital and analog signal processing requirements within complex control systems.
Advantages
This fieldbus coupler offers exceptional versatility by supporting both PROFIBUS DP and FMS protocols, allowing for seamless integration into diverse industrial environments. The modular architecture enables users to expand their I/O station as needed, providing a scalable solution that grows with the application. Furthermore, the device is built to withstand demanding operational conditions, maintaining stable communication and high signal integrity even in environments where precision and reliability are critical for system uptime.
Suitable for
Industrial automation and control systems
Integration of digital and analog sensors and actuators
PROFIBUS DP/FMS network communication
Modular I/O station expansion
This device may not be suitable for applications requiring communication protocols other than PROFIBUS, such as PROFINET, Modbus TCP, or EtherCAT. Additionally, it is not intended for use in environments that exceed its specified physical dimensions or environmental operating ratings.
Key specifications
Supported protocol: PROFIBUS DP/FMS
Maximum transmission rate: 12 MBaud
Signal support: Digital and analog
Width: 51 mm
Depth: 100 mm
Height: 65 mm
To use the Wago 750-303, mount the coupler onto a standard DIN rail and connect it to the PROFIBUS network via the designated interface. Once physically installed, attach the required digital or analog I/O modules to the side of the coupler. Configure the PROFIBUS master station to recognize the coupler and the associated I/O modules according to the system's specific GSD file requirements. Ensure all power supply connections are secure and that the bus termination is correctly configured to prevent signal reflections.
What to consider before purchase
Verify compatibility with your existing PROFIBUS master controller
Ensure the total number of I/O modules does not exceed the coupler's capacity
Check that the physical mounting space accommodates the 51 mm width
Confirm that the required GSD files are available for your PLC software
For optimal performance, ensure that the PROFIBUS cable is shielded correctly and that the bus is properly terminated at both ends to maintain signal integrity at high transmission speeds.

## Specifications

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 55 |
| Height | 65 mm |
| Width | 51 mm |
| Depth | 100 mm |
| Product colour | Grey |
| International Protection (IP) code | IP20 |

## FAQ

### How much does the Wago 750-303 PROFIBUS DP/FMS Fieldbus Coupler cost, and is it available for purchase?

The price is 663.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 09.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Wago 750-303 PROFIBUS DP/FMS Fieldbus Coupler 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 Wago 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 Wago 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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