Legrand TX3 403739 Miniature Circuit Breaker 2P 20A

Name: Legrand TX3 403739 Miniature Circuit 403739
Brand: Legrand
SKU: 12452969
Price: 23.99 EUR
Availability: InStock

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Legrand TX3 403739 Miniature Circuit Breaker 2P 20A Type D

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Short description

The Legrand TX3 403739 is a 2-pole miniature circuit breaker designed for reliable electrical protection. It features a 20 A rated current, Type D tripping characteristic, and operates within a voltage range of 240-415 V at 50-60 Hz. With an IP20 protection rating, this device is suitable for industrial and commercial electrical distribution systems, ensuring safety and efficient circuit management.

Available for order: 1 pcs.

Warranty: 2 Years

SKU: 12452969

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Product information

Description

The Legrand TX3 403739 is a high-quality 2-pole miniature circuit breaker engineered to provide robust electrical protection in various environments. Designed for reliability, this device effectively manages electrical circuits by interrupting power flow during overloads or short circuits. It operates seamlessly within a voltage range of 240-415 V and supports standard frequencies of 50-60 Hz, making it a versatile component for modern electrical distribution systems.

Advantages

This circuit breaker offers exceptional durability and consistent performance, ensuring the safety of connected electrical equipment. Its Type D tripping characteristic makes it particularly effective for circuits with high inrush currents, such as those powering motors or large transformers. The compact design allows for efficient space utilization within electrical panels, while the high-quality construction from Legrand ensures long-term operational stability and ease of installation for professional electricians.

Suitable for

Industrial electrical distribution systems
Commercial building power management
Circuits powering motors and inductive loads
Protection of equipment with high starting currents

When it may not be suitable

This device is not intended for residential applications where Type B or Type C tripping characteristics are typically required for standard household appliances. It should not be installed in environments exposed to moisture or dust without an appropriate protective enclosure, as it carries an IP20 rating.

Key specifications

Rated current: 20 A
Number of poles: 2
Tripping characteristic: Type D
Voltage range: 240-415 V
Frequency: 50-60 Hz
Protection rating: IP20
Dimensions: 35.4 mm x 77.8 mm x 88 mm

How to use

The Legrand TX3 circuit breaker is designed for mounting on a standard DIN rail within an electrical distribution board. Installation should be performed by a qualified professional in accordance with local electrical codes. Ensure that the supply voltage and load requirements are compatible with the device specifications before connection. Once mounted, the toggle switch allows for manual control of the circuit, providing a clear visual indication of the breaker status.

What to consider before purchase

Verify that the 20 A rated current matches your circuit load requirements.
Ensure the Type D characteristic is appropriate for your specific load type.
Check available space in your distribution board for the 35.4 mm width.
Confirm that the installation environment meets the IP20 protection requirements.

Usage recommendations

Always ensure the power supply is disconnected before attempting any installation or maintenance work on the electrical panel. Regularly inspect the circuit breaker for signs of wear or damage to maintain optimal safety standards.

All features

Type:: Type D
Storage temperature (T-T):: -40 - 70
Pollution degree:: 2
Circuit breaker type:: Miniature circuit breaker
Dielectric strength:: 4000 V

Power

Input voltage:: 240 - 415
Rated current:: 20 A
Input frequency:: 50 - 60
Rated voltage:: 400 V

Weight & dimensions

Height:: 88 mm
Width:: 35.4 mm
Depth:: 77.8 mm

Design

International Protection (IP) code: Device protection rating against dust and water according to the international IP standard.: IP20

Features

Number of poles:: 2
Installation type:: DIN-rail

Technical details

Doesn't contain:: Halogen

Description

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Customer questions

FAQ

How much does the Legrand TX3 403739 Miniature Circuit Breaker 2P 20A cost, and is it available for purchase?

The price is 23.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 03.07.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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