Legrand TX3 40A Type B 4-Pole Miniature Circuit Breaker

Name: Legrand TX3 Miniature Circuit Breaker 403421
Brand: Legrand
SKU: 12449958
Price: 69.99 EUR
Availability: InStock

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Legrand TX3 Miniature Circuit Breaker 40A Type B 4-Pole

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Short description

The Legrand TX3 is a 4-pole miniature circuit breaker designed for reliable electrical protection. It features a rated current of 40 A, operating within a voltage range of 240-415 V at 50-60 Hz. With a Type B tripping characteristic and IP20 protection rating, this device is suitable for residential and commercial distribution boards to prevent overcurrent and short-circuit faults.

Available for order: 1 pcs.

Warranty: 2 Years

SKU: 12449958

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to the Customer Service Center at Kengaraga 2b, Riga

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Customer service center

2b. Kengaraga str., Riga, Latvia, LV-1063

06.07.2026 {{selectedOffer.officeDeliveryString}}

free

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From 4.99 €

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Product information

Description

The Legrand TX3 Miniature Circuit Breaker 40A Type B 4-Pole is a high-quality electrical protection device engineered to safeguard residential and commercial electrical installations. This 4-pole circuit breaker is designed to detect and interrupt overcurrent and short-circuit faults, ensuring the safety of connected circuits and equipment. With a robust construction and reliable performance, it serves as an essential component in modern distribution boards, providing consistent protection against electrical hazards.

Advantages

This circuit breaker offers exceptional reliability and precision in electrical fault detection. Its Type B tripping characteristic makes it particularly effective for protecting circuits with low inrush currents, such as lighting and general-purpose outlets. The 4-pole configuration allows for the simultaneous disconnection of three phases and the neutral, providing comprehensive isolation for complex electrical systems. The compact design ensures efficient use of space within standard distribution enclosures, while the high-quality materials used by Legrand guarantee long-term durability and operational stability.

Suitable for

Residential electrical distribution boards
Commercial office lighting circuits
General-purpose power distribution systems
Protection of sensitive electrical equipment

When it may not be suitable

This device is not intended for use in environments with high inrush currents, such as those containing large motors or transformers, where a Type C or Type D breaker would be more appropriate to prevent nuisance tripping. Additionally, it is not suitable for outdoor installations without an appropriate weather-resistant enclosure due to its IP20 rating.

Key specifications

Rated current: 40 A
Number of poles: 4
Tripping characteristic: Type B
Voltage range: 240 - 415 V
Frequency: 50 - 60 Hz
Protection rating: IP20
Dimensions: 88 mm (H) x 70.8 mm (W) x 77.8 mm (D)

How to use

The Legrand TX3 circuit breaker should be installed by a qualified electrician in accordance with local electrical regulations. It is designed for mounting onto a standard DIN rail within a distribution board. Ensure that the supply voltage and load requirements are compatible with the device specifications before installation. Once mounted, connect the incoming supply cables and outgoing load cables to the appropriate terminals, ensuring all connections are tightened to the manufacturer's specified torque to prevent overheating.

What to consider before purchase

Verify that the 40 A rating matches the requirements of your circuit load.
Ensure the 4-pole configuration is necessary for your specific electrical installation.
Check that the Type B characteristic is suitable for the connected appliances.
Confirm that the physical dimensions fit within your existing distribution board space.

Usage recommendations

Regularly inspect the circuit breaker for any signs of physical damage or discoloration. It is recommended to perform a functional test periodically to ensure the tripping mechanism remains operational. Always disconnect the power supply before performing any maintenance or inspection on the distribution board.

All features

Type:: Type B
Storage temperature (T-T):: -40 - 70
Pollution degree:: 2
Circuit breaker type:: Miniature circuit breaker
Dielectric strength:: 4000 V
Energy limiting class:: 3

Weight & dimensions

Height:: 88 mm
Width:: 70.8 mm
Depth:: 77.8 mm

Design

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

Power

Input voltage:: 240 - 415
Rated current:: 40 A
Input frequency:: 50 - 60
Rated voltage:: 400 V

Features

Number of poles:: 4
Installation type:: DIN-rail

Technical details

Doesn't contain:: Halogen

Description

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Customer questions

FAQ

How much does the Legrand TX3 40A Type B 4-Pole Miniature Circuit Breaker cost, and is it available for purchase?

The price is 69.99 € (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 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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