Legrand TX3 403759 Miniature Circuit Breaker 40A

Name: Legrand TX3 Miniature Circuit Breaker 403759
Brand: Legrand
SKU: 12449180
Price: 60.99 EUR
Availability: InStock

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Legrand TX3 Miniature Circuit Breaker 40A Type D 3-Pole 403759

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Short description

The Legrand TX3 403759 is a 3-pole miniature circuit breaker designed for reliable electrical protection. It features a 40 A rated current and operates at 240-415 V with a 50-60 Hz frequency. Classified as Type D, this device is ideal for industrial and commercial applications requiring high surge current handling. The unit is built to IP20 standards, ensuring safe and efficient performance in standard electrical distribution boards.

Available for order: 7 pcs.

Warranty: 2 Years

SKU: 12449180

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to the Customer Service Center at Kengaraga 2b, Riga

06.07.2026 {{selectedOffer.officeDeliveryString}}

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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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From 1.99 €

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Product information

Description

The Legrand TX3 40A Type D 3-pole miniature circuit breaker is a high-quality electrical protection device engineered to safeguard industrial and commercial circuits. Designed for integration into standard electrical distribution boards, this unit provides reliable overcurrent protection for three-phase systems. Its robust construction ensures consistent performance in demanding electrical environments where surge currents are common.

Advantages

This circuit breaker offers exceptional reliability due to its Type D tripping characteristic, which is specifically designed to handle high inrush currents often associated with motors, transformers, and large lighting installations. The 3-pole configuration allows for the simultaneous disconnection of all three phases, enhancing safety during maintenance or fault conditions. Its compact design facilitates easy installation in modular distribution systems, while the high-quality materials used in its manufacturing ensure long-term operational stability and durability.

Suitable for

Industrial machinery and motor control circuits
Large-scale commercial lighting systems
Electrical distribution boards in workshops
Applications with high inductive loads

When it may not be suitable

This device is not intended for residential applications where Type B or Type C circuit breakers are typically required for standard household appliances. Using a Type D breaker in circuits without high inrush current requirements may result in delayed protection during a fault, as it is designed to tolerate higher temporary surges.

Key specifications

Rated current: 40 A
Number of poles: 3
Tripping characteristic: Type D
Operating voltage: 240-415 V
Frequency: 50-60 Hz
Protection rating: IP20
Dimensions: 88 mm height, 53.1 mm width, 77.8 mm depth

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 on a standard DIN rail within an electrical enclosure. Ensure that the supply voltage and frequency match the specifications of the device before connection. Securely fasten the input and output cables to the appropriate terminals, ensuring that all connections are tightened to the manufacturer's specified torque to prevent overheating.

What to consider before purchase

Verify that the 40 A rating is appropriate for your specific load requirements.
Ensure the Type D characteristic is necessary for your equipment to avoid nuisance tripping or delayed protection.
Check the available space in your distribution board to accommodate the 3-pole width.
Confirm that the installation environment meets the IP20 protection standard.

Usage recommendations

Regularly inspect the circuit breaker for signs of wear or thermal damage. It is recommended to perform periodic testing of the switching mechanism to ensure it remains functional. Always disconnect the power supply before performing any maintenance or modifications to the electrical circuit.

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

Weight & dimensions

Height:: 88 mm
Width:: 53.1 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:: 3
Installation type:: DIN-rail

Technical details

Doesn't contain:: Halogen

Description

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Customer questions

FAQ

How much does the Legrand TX3 403759 Miniature Circuit Breaker 40A cost, and is it available for purchase?

The price is 60.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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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