# EATON 189903 3-Pole Motor Protection Circuit Breaker 4kW 6.3-10A

**URL:** https://aio.lv/en/product--eaton-189903--12455754
**Data updated:** 2026-05-18 09:33 (EEST)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 189903
**EAN:** 4015081878994
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 51.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 42.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-189903--12455754

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The EATON 189903 is a 3-pole motor protection circuit breaker designed for reliable motor control and protection. It supports a power rating of 4kW and an adjustable thermal release range of 6.3A to 10A. This device provides essential protection against overloads and short circuits in industrial and commercial electrical systems, ensuring safe and efficient operation of connected motors.

## Long description

The EATON 189903 is a robust 3-pole motor protection circuit breaker engineered to provide dependable control and safety for electrical motors. Designed for industrial and commercial environments, this device effectively manages power distribution while safeguarding equipment from electrical faults. With a power rating of 4kW and an adjustable thermal release range between 6.3A and 10A, it offers precise protection tailored to specific motor requirements.
Advantages
This circuit breaker excels in providing comprehensive protection against both thermal overloads and short circuits, which are critical for maintaining the longevity of motor systems. Its compact design allows for efficient space utilization within control panels, while the adjustable current range ensures flexibility during installation and maintenance. The high-quality construction guarantees reliable performance under demanding operational conditions, minimizing downtime and enhancing overall system safety.
Suitable for
Industrial motor control systems
Commercial HVAC equipment
Pump and compressor motor protection
Conveyor belt drive systems
This device may not be suitable for applications requiring current ratings outside the 6.3A to 10A range or for motors exceeding the 4kW power capacity. It is also not intended for use in environments with extreme moisture or corrosive substances unless housed in an appropriate protective enclosure.
Key specifications
Number of poles: 3
Power rating: 4kW
Thermal release range: 6.3A - 10A
Function: Overload and short-circuit protection
Installation should be performed by a qualified professional in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within an electrical distribution board. Once mounted, the thermal release current must be calibrated to the specific nominal current of the connected motor to ensure optimal protection.
What to consider before purchase
Verify the nominal current of your motor matches the 6.3A-10A adjustment range
Ensure the power rating of 4kW is sufficient for your specific motor
Check available space in your electrical cabinet for mounting
Confirm compatibility with existing DIN rail systems
Usage recommendations: Regularly inspect the circuit breaker for signs of wear or heat damage and perform periodic testing of the trip mechanism to ensure continued operational reliability.

## FAQ

### How much does the EATON 189903 Motor Protection Circuit Breaker cost, and is it available for purchase?

The price is 51.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 409 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 08.07.2026 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. All transactions are 100% secure and encrypted.

### 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 EATON 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 EATON 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

https://aio.lv/img/cache/product/12455754/68758022_large.webp