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IMO B10B3N125A MCB – 3P+N – B Curve – 125A – 10kA
IMO B10B3N125A miniature circuit breaker, a 125 A B curve 3 pole plus neutral MCB with 10 kA breaking capacity for industrial and commercial circuit protection.
£92.11
Why Choose the IMO B10B3N125A Miniature Circuit Breaker?
The IMO B10B3N125A is a high performance miniature circuit breaker (MCB) designed to provide reliable protection against overloads and short circuits in industrial, commercial and OEM electrical installations. As part of the IMO B10 circuit protection range, it delivers dependable 10 kA fault protection for demanding low voltage distribution systems.
Featuring a B curve tripping characteristic, this MCB is suitable for circuits with relatively low inrush currents where rapid disconnection under fault conditions is required. Its 10 kA short circuit breaking capacity helps protect cables, switchgear and connected equipment from damage caused by excessive current.
With a 125 A current rating and a 3 pole + neutral configuration, the B10B3N125A is ideal for protecting higher load three-phase circuits requiring neutral switching. Its DIN rail mounting format enables fast, secure installation inside switchboards, distribution boards and industrial control panels.
Key Advantages
- Reliable miniature circuit breaker for industrial and commercial circuit protection.
- 125 A rated current for higher load three-phase applications.
- B curve tripping characteristic for rapid response on lower inrush circuits.
- 10 kA short circuit breaking capacity for enhanced fault protection.
- 3 pole + neutral configuration for comprehensive circuit isolation.
- Compact DIN rail mounting for efficient panel installation.
Key Features
- IMO B10 miniature circuit breaker series.
- 125 A rated current.
- B curve protection.
- 10 kA breaking capacity.
- 3 pole + neutral construction.
- Suitable for 415 V AC low voltage systems.
- VDE approved design for professional installations.
- DIN rail mounting for switchboards and control panels.
Reliable Protection for Three-Phase Electrical Systems
Miniature circuit breakers such as the IMO B10B3N125A are designed to automatically disconnect a circuit when an overload or short circuit occurs. This helps protect cables, switchgear and connected machinery from electrical damage caused by excessive current.
The B curve characteristic makes this MCB well suited to circuits where fast tripping is required and high inrush current is not expected. Its 3 pole + neutral configuration provides practical protection and isolation for three-phase distribution systems that require neutral switching.
Typical Applications
- Three-phase industrial distribution boards.
- Commercial electrical installations.
- Control panels and automation enclosures.
- Machinery and equipment protection.
- Power distribution circuits.
- Panel building, maintenance and electrical installation work.
Technical Specifications
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| Current | 125 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | IMO | |
| Series | B10 | |
| Model | B10B3N125A | |
| Product type | Miniature circuit breaker | |
| Rated current | 125 A | |
| Tripping characteristic | B Curve | |
| Breaking capacity | 10 kA | |
| Number of poles | 3 Pole + Neutral | |
| Rated voltage | 415 V AC | |
| Mounting type | DIN rail | |
| Approval | VDE | |
| Protection degree | IP20 | |
| Terminal capacity | 35 mm² solid, 25 mm² stranded | |
| Application | Low voltage circuit protection | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B10B3N125A used for?
The IMO B10B3N125A is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and control panel applications.
What current rating does this MCB have?
This miniature circuit breaker has a rated current of 125 A.
What does B curve mean on this circuit breaker?
A B curve MCB trips quickly under fault conditions and is typically used on circuits with lower inrush currents.
What is the breaking capacity of the B10B3N125A?
The B10B3N125A has a 10 kA short circuit breaking capacity.
What does 3 pole + neutral mean?
It means the device switches three phase conductors plus a neutral pole, making it suitable for three-phase circuits that require neutral isolation.
Trusted by Panel Builders and Electrical Engineers
IMO B10 miniature circuit breakers are widely used by panel builders, contractors and electrical engineers who require compact, reliable and high breaking capacity protection for low voltage electrical installations.
