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 BR6B4050A MCB – 4P – B Curve – 50A – 6kA
IMO BR6B4050A 50A 4 pole miniature circuit breaker with B curve characteristic and 6 kA breaking capacity for industrial and commercial circuit protection.
£21.78
Why Choose the IMO BR6B4050A Miniature Circuit Breaker?
The IMO BR6B4050A is a high-performance 50 A miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in industrial, commercial and OEM electrical installations. As part of the IMO BR6 range, it is manufactured in accordance with IEC 60898-1, ensuring reliable protection and long-term performance.
Featuring a 4-pole configuration, a B curve tripping characteristic and a 6 kA short-circuit breaking capacity, the BR6B4050A is ideal for protecting resistive loads and distribution circuits where rapid fault response is required. Its compact modular design makes installation straightforward within distribution boards and control panels.
Designed for DIN rail mounting, the BR6B4050A incorporates finger-safe IP20 terminals, a contact position indicator and central trip indication to simplify installation, operation and maintenance while improving electrical safety.
Key Advantages
- Reliable 50 A miniature circuit breaker for industrial and commercial installations.
- 4-pole configuration for three-phase and neutral protection.
- B curve characteristic for fast operation on resistive loads.
- 6 kA short-circuit breaking capacity.
- DIN rail mounting for quick installation.
- Manufactured to IEC 60898-1.
Key Features
- IMO BR6 miniature circuit breaker.
- 50 A rated current.
- 4-pole configuration.
- B curve tripping characteristic.
- 6 kA breaking capacity.
- Central trip indication for fault identification.
- Contact position indicator window.
- Suitable for pin and fork type busbar connection.
Reliable Protection for Low-Voltage Distribution Systems
Miniature circuit breakers such as the IMO BR6B4050A automatically disconnect electrical circuits during overload or short-circuit conditions, helping to protect electrical equipment, wiring and distribution systems from damage while improving operational safety.
The B curve characteristic makes this breaker particularly suitable for resistive loads and general-purpose distribution circuits where fast tripping characteristics are preferred. Its compact modular construction makes it an excellent choice for modern switchboards and industrial control panels.
Typical Applications
- Industrial distribution boards.
- Commercial electrical installations.
- Three-phase distribution systems.
- Control panels.
- OEM machinery.
- General low-voltage circuit protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 50 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | BR6 Miniature Circuit Breakers | |
| Model | BR6B4050A | |
| Product type | Miniature circuit breaker | |
| Rated current | 50 A | |
| Number of poles | 4 pole | |
| Trip characteristic | B curve | |
| Breaking capacity | 6 kA | |
| Rated voltage | 230 / 400 V AC | |
| Frequency | 50 / 60 Hz | |
| Mounting type | DIN rail mounting | |
| Protection rating | IP20 terminals | |
| Operating temperature | -30 °C to +60 °C | |
| Standard | IEC 60898-1 | |
| Barcode | 5056207439995 | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO BR6B4050A used for?
The IMO BR6B4050A protects electrical circuits against overloads and short circuits in industrial and commercial electrical installations.
What current rating does this breaker have?
The breaker has a rated current of 50 A.
What does the B curve characteristic mean?
A B curve miniature circuit breaker trips rapidly under relatively low overcurrent conditions, making it suitable for resistive loads and general electrical distribution circuits.
What is the short-circuit breaking capacity?
The IMO BR6B4050A provides a 6 kA short-circuit breaking capacity.
How is the breaker installed?
The breaker is designed for standard DIN rail mounting inside electrical distribution boards and industrial control panels.
Trusted by Electrical Engineers Worldwide
IMO miniature circuit breakers are trusted by electrical contractors, panel builders and OEM manufacturers for reliable low-voltage circuit protection and dependable long-term performance.
