Legrand Miniature Circuit Breakers (MCB)

Legrand Breakers – Comprehensive Protection for Electrical Installations

When you specify protection devices for electrical distribution — from residential boards to large industrial panels — the Legrand RX3 3‑Pole MCB 419713 and related modules form the backbone of the system. The brand’s “Modular switches and circuit breakers” catalogue lists devices rated from single-pole to four-pole, currents from 6 A up to 63 A+ and breaking capacities up to 100 kA at 400 V.
Key reasons procurement teams rely on Legrand breakers: standardised mounting, known performance, clear documentation, compatibility with distribution boards and busbars.

Legrand Circuit Protection – Safety, Compliance & Reliability

The category of circuit protection covers all devices aimed at interrupting overcurrent conditions (overload, short-circuit) and preventing damage to cables, equipment or premises. Legrand’s product range includes miniature circuit breakers (MCBs), residual current devices (RCDs / RCCBs), combined devices and modular accessories.
From a specifier’s perspective: you must check devices for correct current rating, characteristic curve (B, C, D), number of poles, breaking capacity, and compatibility with the board bus system.

Legrand Miniature Circuit Breakers – Modular & Scalable

For many installations, the miniature circuit breakers (MCBs) are the most numerous protective devices. Legrand offers the RX3 and TX3 series, among others. Example: MCB DX3 3P C2 (407822) rated for 10 kA breaking capacity. 
Installers appreciate MCBs because they fit standard DIN-rails, are compact, have predictable trip curves, and spare parts are readily available. From procurement viewpoint: standardising on one series across loads reduces SKU variety.

Legrand Residual Current Devices – Protection Against Fault Currents

Complementing overcurrent protection, the residual current devices (RCDs / RCBOs) detect leakage currents and prevent electric shock or fire from earth faults. Legrand lists a broad range: 2-pole up to 4-pole, rated currents up to 100 A, sensitivity down to 10 mA.
In project terms: you must specify correct type (AC, A, F, B), sensitivity (30 mA, 100 mA), number of poles, and ensure RCDs integrate with the breaker system or board layout.

Legrand Overload Protection & Modular Breakers – System Flexibility

Beyond basic breakers, the overload protection and modular breakers category includes devices with additional features: auxiliary contacts, signalling contacts, motor-protection, arc-fault detection (AFDD) modules, etc. As the 2025 modular catalogue shows, RX3 and TX3 families support these advanced options.
From a maintenance viewpoint: choosing modular breakers lets you upgrade protection functions (for example arc-fault detection or network monitoring) without re-engineering the board layout.

Buyer Checklist & Specification Guidance

• Rated current & characteristic curve: Choose the correct current rating (A) and characteristic (B, C, D) depending on load type.
• Breaking capacity (Icu): Ensure breaker is capable of interrupting fault current at site (e.g., 6 kA, 10 kA, 36 kA or higher). For example Legrand S 301 C16 TX is 6 kA rated. TME
• Number of poles & supply type: Single-pole, 1P+N, 2P, 4P — choose as per phase system.
• RCD selection: Specify correct type (AC, A, F, B), sensitivity (mA) and coordinate it with MCBs or RCBOs.
• Modular system & spare parts: Using Legrand modular breakers means spare availability, consistent form-factor, easier board servicing.
• Future-proofing: Consider future upgrade needs (e.g., arc fault detection, smart monitoring) and pick a device family that supports expansion.
• Common mistakes: Installing a breaker with too low breaking capacity; mixing breaker brands (leads to maintenance confusion); not coordinating RCD and MCB loads; ignoring access/clearance in panels.

Wholesale & B2B Supply — Bank of Lamps

For electrical contractors, panel builders, distributors and project procurement teams: the Legrand breakers category offers high value.
We provide:

• Full Legrand modular breaker range including MCBs, RCDs, RCBOs, modular protection devices (RX3, TX3, DX3).
• Volume pricing and large-project support for multi-site installations.
• Documentation: datasheets, catalogue PDFs, trip curves, busbar compatibility.
• Logistics: central European warehouse, shipping across Ukraine & EU, consistent stock turnover.
  If you’re sourcing circuit protection devices for residential, commercial or industrial boards and you aim for brand consistency, ease of servicing and long-term parts availability — specifying Legrand breakers simplifies procurement and lifecycle management.