IMO BR6D3N40A MCB - 3P+N - D Curve - 40A - 6kA

IMO BR6D3N40A MCB – 3P+N – D Curve – 40A – 6kA

IMO BR6D3N40A 40A 3 Pole + Neutral miniature circuit breaker with D curve tripping characteristic, 6kA breaking capacity and 230/400V AC rating for industrial and commercial electrical protection.

SKU: BR6D3N40AMPN: BR6D3N40A
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Why Choose the IMO BR6D3N40A Miniature Circuit Breaker?

The IMO BR6D3N40A is a high-performance 6kA miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in commercial and industrial electrical installations. As part of the trusted IMO BR6 series, this device combines robust performance with compact DIN rail mounting for modern distribution boards and control panels.

Featuring a D curve tripping characteristic, the BR6D3N40A is ideal for circuits with high inrush currents, including motors, transformers and other inductive loads. Its durable construction, clear contact position indication and finger-safe terminals help simplify installation while maintaining high levels of electrical safety.

With a 40A current rating, 3 pole + neutral configuration and a 230/400V AC operating voltage, this circuit breaker is well suited to industrial machinery, motor control panels and three-phase power distribution applications requiring reliable circuit protection.

Key Advantages

  • Compact 6kA miniature circuit breaker for industrial installations.
  • 40A rated current for three-phase distribution circuits.
  • D curve tripping suitable for inductive loads with high starting currents.
  • 3 pole + neutral configuration for comprehensive circuit protection.
  • DIN rail mounting for quick installation in control panels.
  • Designed in accordance with IEC 60898-1 standards.

Key Features

  • IMO BR6 miniature circuit breaker series.
  • 40A rated current.
  • D curve trip characteristic.
  • 6kA short circuit breaking capacity.
  • 3 pole + neutral (3P+N) configuration.
  • 230/400V AC rated operating voltage.
  • DIN rail mounting.
  • Finger-safe IP20 terminals with contact position indicator.

Reliable Protection for Three-Phase Electrical Systems

Miniature circuit breakers automatically disconnect electrical circuits when overload or short circuit conditions occur, helping protect wiring, equipment and connected machinery from damage while improving electrical safety.

The IMO BR6 series has been developed for industrial and commercial applications where dependable performance, straightforward installation and long service life are essential. The D curve characteristic makes this model particularly suitable for circuits supplying motors and other equipment with high inrush currents.

Typical Applications

  • Industrial control panels.
  • Motor control centres.
  • Three-phase power distribution.
  • Machinery and automation systems.
  • Commercial electrical installations.
  • OEM equipment and switchboards.

Technical Specifications

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Current 40 A
Phase Three Phase
Poles 3-pole + N
Device Type MCB
Trip Curve D curve
Breaking Capacity 6 kA
Manufacturer IMO Precision Controls
Series BR6
Model BR6D3N40A
Product type Miniature Circuit Breaker (MCB)
Rated current 40 A
Tripping characteristic D Curve
Breaking capacity 6 kA
Rated voltage 230/400 V AC
Number of poles 3 Pole + Neutral (3P+N)
Frequency 50 / 60 Hz
Mounting type DIN rail
Protection rating IP20 terminals
Standards IEC 60898-1
Operating temperature -30°C to +60°C
Modules 4
HS Code 8536201090
Country of Manufacture China

Frequently Asked Questions

What is the IMO BR6D3N40A used for?

It protects three-phase electrical circuits against overloads and short circuits in industrial and commercial installations.

What does the D curve trip characteristic mean?

A D curve breaker is designed for circuits with high inrush currents, making it suitable for motors, transformers and other inductive equipment.

What is the rated current of this circuit breaker?

The IMO BR6D3N40A has a 40A rated current.

What is the breaking capacity?

This miniature circuit breaker provides a 6kA short circuit breaking capacity.

How is the BR6D3N40A installed?

It is designed for standard DIN rail mounting within distribution boards, switchboards and industrial control panels.

Trusted by Electrical Professionals Worldwide

IMO BR6 miniature circuit breakers are widely specified by panel builders, electrical contractors and industrial engineers for dependable circuit protection across commercial and industrial installations.