Legrand DX3 MCB

Overview

The Legrand DX3 MCB (miniature circuit breaker) protects home and office electrical distribution boards from overload and short-circuit faults, automatically cutting power to the affected circuit before wiring or connected appliances are damaged. It's available across single-pole through four-pole configurations and a range of current ratings, covering everything from a single lighting circuit to a full three-phase distribution setup.

Key Specifications

• Type: Miniature circuit breaker (MCB), overload and short-circuit protection
• Pole configurations: 1 Pole, 2 Pole, 3 Pole, 4 Pole
• Current ratings: 10A to 63A depending on pole configuration
• Use: Home and office electrical distribution boards

Available Configurations

• 1 Pole (10A/20A/25A/32A) — for individual single-phase circuits like lighting or a socket circuit.
• 2 Pole (25A/32A/40A/63A) — for single-phase circuits needing both line and neutral switching, such as higher-load appliance circuits.
• 3 Pole (32A/40A/63A) — for three-phase circuits, typically for larger motors or three-phase distribution sub-boards.
• 4 Pole (32A/40A/63A) — for three-phase-plus-neutral circuits and main incomer protection on larger distribution boards.

How to Use

1. Have a licensed electrician select the pole configuration and amperage matching your circuit's load and phase requirement.
2. Mount the MCB onto the DIN rail inside the distribution board.
3. Wire the circuit as per the terminal markings — this should always be done by a qualified electrician.
4. If the MCB trips, identify and resolve the overload or fault before resetting it.

Frequently Asked Questions

How do I know which amperage rating I need?
The rating should match the load and wire size of the specific circuit — this is a job for a licensed electrician to size correctly, not a general online estimate.

What's the difference between 1 Pole and 2 Pole?
A 1 Pole MCB switches only the line wire; a 2 Pole MCB switches both line and neutral, often used for higher-load or safety-critical single-phase circuits.

Why Buy From Buildenza

Genuine Legrand product, delivered by Buildenza in 60 minutes across our Kondapur/IT Corridor delivery zone.