# Motor circuit breaker EATON Z-MS-4,0/3 3-pole (model 248409) - overload and short-circuit protection

**URL:** https://aio.lv/en/product--eaton-248409--12107196
**Data updated:** 2026-03-20 09:57 (EET)
**Category:** Power Sockets
**Manufacturer:** EATON
**Manufacturer code:** 248409
**EAN:** 4015082484095
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 32.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eaton-248409--12107196

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

EATON Z-MS-4,0/3 motor circuit breaker (model 248409) is a 3-pole device designed to protect electric motors and three-phase circuits from overloads and short circuits. It provides adjustable thermal-magnetic protection for starting currents and running conditions. Suitable for industrial and commercial applications requiring reliable motor protection and circuit isolation.

## Long description

The EATON Z-MS-4,0/3 motor circuit breaker is a three-pole protection device designed for reliable overload and short-circuit protection of three-phase motors and associated circuits. The unit combines adjustable thermal and magnetic trip elements to adapt to both starting currents and steady-state running conditions, enabling accurate protection and selective tripping in industrial and commercial installations. The compact design facilitates panel mounting and integration into motor control circuits where both motor protection and circuit isolation are required.
Advantages
The motor circuit breaker provides adjustable thermal-magnetic protection that covers a wide range of motor starting and running currents while reducing nuisance trips. Its three-pole configuration ensures simultaneous disconnection of all phases for safe isolation. The device is designed for reliable operation in demanding electrical environments and supports straightforward installation and maintenance in motor control panels.
Suitable for
 Protection of three-phase motors in industrial machinery
 Overload and short-circuit protection in commercial electrical panels
 Motor starters and control circuits requiring manual or automatic isolation
 Retrofit or new installations where adjustable thermal-magnetic protection is needed
Key specifications
 Number of poles: 3-pole configuration for three-phase circuits
 Protection type: Combined thermal (overload) and magnetic (short-circuit) protection
 Adjustability: Adjustable trip settings to match motor full-load and starting currents
 Mounting: Panel or control cabinet mounting suitable for motor control applications
 Function: Motor protection and circuit isolation with coordinated tripping behavior
How to use
Select trip settings according to the motor nameplate full-load current and expected starting current, then install the breaker in the control panel following local electrical codes and the manufacturer's mounting and wiring instructions. Ensure correct phase sequence and tight electrical connections. After installation, perform insulation and continuity checks before energizing. Adjust the thermal setting so that it protects the motor under normal load while allowing for permissible starting current; the magnetic setting should be set to clear short-circuit faults quickly without affecting selectivity with upstream protection devices.
Usage recommendations
Use this motor circuit breaker as part of a coordinated protection scheme: verify compatibility with upstream and downstream protection devices and confirm settings during commissioning. Periodically inspect connections and trip operation, and replace or service according to operating hours and environmental conditions to ensure continued motor protection and safety.

## FAQ

### How much does the EATON Z-MS-4,0/3 3-pole motor circuit breaker cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 184 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 13.07.2026 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

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