# Eaton NZMB1-A40 3-Pole Circuit Breaker, 40A, 440V

**URL:** https://aio.lv/en/product--eaton-259075--3424073
**Data updated:** 2026-05-19 13:44 (EEST)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 259075
**EAN:** 4015082590758
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 237.49 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 196.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-259075--3424073

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

The Eaton NZMB1-A40 is a 3-pole molded case circuit breaker designed for reliable electrical circuit protection. With a rated current of 40 A and a rated voltage of 440 V, it features a thermal-magnetic (TM) release mechanism. This device is rated IP20 and is suitable for industrial and commercial power distribution applications, ensuring safe operation and effective overload protection in electrical systems.

## Long description

The Eaton NZMB1-A40 is a robust 3-pole molded case circuit breaker engineered to provide dependable protection for electrical circuits in various environments. This device is designed to handle a rated current of 40 A and a rated voltage of 440 V, utilizing a reliable thermal-magnetic release mechanism to safeguard systems against overloads and short circuits. Its compact and durable construction makes it an essential component for maintaining the integrity and safety of electrical distribution networks.
Advantages
This circuit breaker offers high operational reliability due to its precision-engineered thermal-magnetic release, which ensures consistent performance under varying load conditions. The 3-pole configuration allows for effective management of three-phase power systems, providing comprehensive protection across all phases. Its design prioritizes ease of integration into standard electrical panels, while the robust housing ensures long-term durability in demanding industrial and commercial settings.
Suitable for
Industrial power distribution systems
Commercial building electrical panels
Motor protection applications
General electrical circuit overload protection
When it may not be suitable
This device is not intended for use in environments with high moisture or dust levels, as it carries an IP20 rating, meaning it lacks protection against water ingress and requires a protective enclosure. It is also not suitable for applications requiring higher current ratings or specific electronic trip units beyond the standard thermal-magnetic capabilities provided.
Key specifications
Number of poles: 3
Rated current: 40 A
Rated voltage: 440 V
Release mechanism: Thermal-magnetic
Ingress protection rating: IP20
How to use
The Eaton NZMB1-A40 should be installed by a qualified electrician within a suitable distribution board or enclosure. Ensure that the supply voltage and current requirements of your system match the specifications of the breaker before installation. Secure the device onto the mounting rail or backplate, connect the input and output cables according to the terminal markings, and ensure all connections are tightened to the manufacturer's specified torque to prevent overheating.
What to consider before purchase
Verify that the 40 A current rating matches your circuit load requirements.
Ensure the installation environment is dry and protected from environmental elements.
Confirm that the 440 V voltage rating is compatible with your electrical network.
Check the available space in your distribution board for a 3-pole molded case breaker.
Usage recommendations
Regularly inspect the circuit breaker for any signs of physical damage or loose connections. It is recommended to perform periodic testing of the switching mechanism to ensure continued operational readiness and to verify that the thermal-magnetic release functions correctly within the system parameters.

## Specifications

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -40 - 70 |
| Type of release | TM |

### Power

| Feature | Value |
|---|---|
| Rated current | 40 A |
| Rated voltage | 440 V |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 145 mm |
| Width | 90 mm |
| Depth | 84.5 mm |

### Design

| Feature | Value |
|---|---|
| Certification | IEC/EN 60947 |
| Product colour | Black, White |
| International Protection (IP) code | IP20 |

### Features

| Feature | Value |
|---|---|
| Operating temperature (T-T) | -25 - 70 |
| Number of poles | 3 |

## FAQ

### How much does the Eaton NZMB1-A40 3-Pole Circuit Breaker cost, and is it available for purchase?

The price is 237.49 € (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 29.07.2026 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 Eaton NZMB1-A40 3-Pole Circuit Breaker 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 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/3424073/58379939_large.webp