Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
IMO BR6B3N40A MCB – 3P+N – B Curve – 40A – 6kA
IMO BR6B3N40A 40A 3 pole plus neutral miniature circuit breaker with B curve tripping characteristic and 6kA breaking capacity for commercial, industrial and control panel circuit protection.
£21.78
Why Choose the IMO BR6B3N40A Miniature Circuit Breaker?
The IMO BR6B3N40A is a reliable 3 pole plus neutral miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in commercial, industrial and control panel applications. As part of the IMO BR6 MCB series, it provides dependable low-voltage circuit protection in a compact DIN rail mounted format.
This MCB features a B curve tripping characteristic, making it suitable for general-purpose circuits where low to moderate inrush currents are expected. With a 6kA short circuit breaking capacity, the BR6B3N40A is well suited to three-phase distribution boards, machine panels and building services installations.
Rated at 40A and designed for 230/400V AC systems, the IMO BR6B3N40A provides practical circuit protection for three-phase loads requiring coordinated phase and neutral disconnection. Its 3P+N configuration makes it ideal for electrical distribution systems where neutral switching is required alongside the three phase conductors.
Key Advantages
- Reliable 3 pole plus neutral miniature circuit breaker for circuit protection.
- 40A rated current suitable for three-phase electrical installations.
- B curve tripping characteristic for general-purpose circuits.
- 6kA short circuit breaking capacity.
- Compact 4 module DIN rail mounting design.
- Suitable for distribution boards, control panels and commercial installations.
Key Features
- IMO BR6 miniature circuit breaker series.
- 40A rated current.
- B curve tripping characteristic.
- 6kA breaking capacity.
- 230/400V AC rated voltage.
- 3 pole plus neutral configuration.
- 4 module width for DIN rail enclosures.
- DIN rail mounting for electrical panels.
- Designed for overload and short circuit protection.
- Suitable for commercial and industrial electrical systems.
Reliable Three-Phase Circuit Protection
The IMO BR6B3N40A automatically disconnects electrical circuits when overload or short circuit faults occur, helping protect wiring, connected equipment and downstream devices from electrical damage. Its B curve characteristic provides fast protection for standard circuits while reducing unwanted tripping during normal operation.
The 3 pole plus neutral arrangement allows the three phase conductors and neutral conductor to be disconnected together. This makes the BR6B3N40A a practical choice for three-phase distribution systems, plant room installations, control panels and commercial electrical boards.
Typical Applications
- Three-phase distribution boards.
- Commercial electrical installations.
- Industrial control panels.
- Building services and plant rooms.
- Machinery and OEM electrical systems.
- General low-voltage circuit protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 40 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | BR6 | |
| Model | BR6B3N40A | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 40A | |
| Number of poles | 3 Pole + Neutral | |
| Number of modules | 4 | |
| Tripping characteristic | B Curve | |
| Rated voltage | 230/400V AC | |
| Frequency | 50 / 60Hz | |
| Breaking capacity | 6kA | |
| Mounting type | 35mm DIN rail | |
| Operating temperature | -30°C to +60°C | |
| Standards | IEC 60898-1 | |
| Application | Overload and short circuit protection | |
| Configuration | Three phase plus neutral switching | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO BR6B3N40A used for?
The BR6B3N40A is used to protect three-phase electrical circuits against overloads and short circuits in commercial, industrial and control panel applications.
What is the current rating of this MCB?
This miniature circuit breaker has a 40A rated current.
What does 3 Pole + Neutral mean?
3 Pole + Neutral means the device switches the three phase conductors and the neutral conductor, making it suitable for three-phase electrical systems where neutral disconnection is required.
What is the breaking capacity of the BR6B3N40A?
The IMO BR6B3N40A has a 6kA short circuit breaking capacity.
How is this miniature circuit breaker mounted?
The BR6B3N40A is designed for installation on a standard 35mm DIN rail inside distribution boards and electrical control panels.
Trusted by Electrical Professionals Worldwide
IMO BR6 miniature circuit breakers are trusted by electrical contractors, panel builders and maintenance engineers for dependable circuit protection, compact installation and reliable performance in demanding electrical systems.
