# Circuit breaker Legrand 403402, 3-pole, 16 A, 400 V

**URL:** https://aio.lv/en/product--legrand-403402--1510942
**Data updated:** 2026-02-12 09:42 (EET)
**Category:** Power Sockets
**Manufacturer:** Legrand
**Manufacturer code:** 403402
**EAN:** 3414970387547
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--legrand-403402--1510942

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Three-pole circuit breaker Legrand 403402 rated for 16 A and 400 V. Designed to protect three-phase electrical circuits from overloads and short circuits. Compact modular device suitable for installation in distribution boards for residential, commercial or light industrial applications. Provides reliable interruption of fault currents and helps maintain electrical safety and equipment protection.

## Long description

Three-pole circuit breaker Legrand 403402 rated for 16 A and 400 V. Designed to protect three-phase electrical circuits from overloads and short circuits, this compact modular device is intended for installation in distribution boards in residential, commercial or light industrial electrical systems. The breaker interrupts fault currents to protect wiring and connected equipment while enabling straightforward mounting and connection within standard DIN-rail enclosures.
Advantages
The three-pole configuration ensures simultaneous disconnection of all phases for balanced protection of three-phase loads. A 16 A rated trip threshold and 400 V insulation rating match common low-voltage three-phase installations. The modular form factor saves panel space and facilitates combination with adjacent protective and switching devices. Construction and materials provide consistent thermal and magnetic tripping characteristics for reliable operation under overload and short-circuit conditions.
Suitable for
Protection of three-phase supply lines for motors and pumps
Distribution boards in small commercial premises
Residential three-phase panels and apartment buildings
Light industrial control circuits and branch circuits
Key specifications
Poles: 3-pole for simultaneous phase disconnection
Current rating: 16 A
Rated voltage: 400 V (AC)
Type: Thermal-magnetic circuit breaker (overload and short-circuit protection)
Mounting: DIN-rail modular format for distribution boards
Connection: Screw terminals for phase conductors and neutral/earth as required
Application environment: Indoor electrical distribution panels
How to use
Install the breaker on a compatible DIN-rail inside the distribution board and secure it according to the enclosure manufacturer’s instructions. Connect the incoming three-phase supply conductors to the line terminals and the load conductors to the load terminals, observing correct phase sequence and tightening torque for the screw terminals. Ensure the panel is de-energized before installation or maintenance. After wiring, restore power and verify correct operation by switching the breaker on and off and confirming protection behavior under expected load conditions.
Usage recommendations
Choose the breaker as part of a coordinated protection scheme: verify conductor sizing, upstream and downstream device characteristics, and short-circuit current levels in the installation. Periodically inspect terminal tightness and signs of overheating, and replace the device if it shows mechanical damage or degraded performance.

## FAQ

### How much does the Circuit breaker Legrand 403402 — 3-pole 16 A 400 V cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 938 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 06.07.2026 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 Legrand 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 Legrand 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/1510942/47618504_large.webp