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IMO B10D3040A MCB – 3P – D Curve – 40A – 10kA
IMO B10D3040A miniature circuit breaker, a 40 A 3 pole D curve MCB with 10 kA breaking capacity for industrial, commercial and three-phase circuit protection applications.
£23.88
Why Choose the IMO B10D3040A Miniature Circuit Breaker?
The IMO B10D3040A is a dependable 3 pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in industrial, commercial and OEM electrical installations. As part of the IMO B10 10kA circuit protection range, it provides reliable performance for demanding low voltage systems.
With a 40 A rated current, D curve tripping characteristic and 10 kA short circuit breaking capacity, the B10D3040A is particularly suited to circuits with high inrush currents. This makes it a practical choice for motors, transformers, compressors, solenoids and other inductive loads commonly used in industrial machinery and automation systems.
The 3 pole configuration makes this breaker suitable for three-phase circuit protection. Its compact DIN rail mounted design allows quick installation inside distribution boards, control panels and electrical enclosures, helping panel builders and maintenance engineers create safe, organised and efficient wiring assemblies.
Key Advantages
- 3 pole miniature circuit breaker for three-phase circuit protection.
- 40 A rated current suitable for industrial and commercial circuits.
- D curve characteristic designed for high inrush current applications.
- 10 kA breaking capacity for dependable short circuit protection.
- Compact DIN rail mounted format for control panels and distribution boards.
- Suitable for motors, transformers and inductive electrical loads.
Key Features
- IMO B10 miniature circuit breaker series.
- 3 pole configuration.
- 40 A rated current.
- D curve tripping characteristic.
- 10 kA short circuit breaking capacity.
- 230/400 V AC rated voltage.
- Rated insulation voltage of 500 V.
- Suitable for 50 / 60 Hz electrical systems.
- Finger protected terminals for safer installation.
- Standard 35 mm DIN rail mounting.
Reliable Circuit Protection for High Inrush Loads
Miniature circuit breakers automatically disconnect electrical circuits when overload or short circuit conditions are detected. This helps protect cables, connected equipment and machinery while supporting safe operation within industrial and commercial electrical installations.
The D curve characteristic of the IMO B10D3040A allows it to tolerate higher start-up currents before tripping, making it well suited to applications involving motors, transformers and other inductive equipment commonly found in industrial automation and machinery installations.
Typical Applications
- Three-phase distribution boards.
- Industrial control panels.
- Motor control circuits.
- Transformer and inductive load protection.
- OEM machinery and automation systems.
- Commercial and industrial electrical installations.
Technical Specifications
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| Current | 40 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCB | |
| Trip Curve | D curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | B10 | |
| Model | B10D3040A | |
| Product type | Miniature circuit breaker | |
| Number of poles | 3 pole | |
| Rated current | 40 A | |
| Tripping characteristic | D Curve | |
| Short circuit breaking capacity | 10 kA | |
| Rated voltage | 230/400 V AC | |
| Maximum DC voltage | 60 V DC | |
| Rated insulation voltage | 500 V | |
| Frequency | 50 / 60 Hz | |
| Mounting type | 35 mm DIN rail | |
| Number of modules | 3 | |
| Terminal capacity | 1 to 25 mm² | |
| Temperature range | -30°C to +60°C | |
| Standards | IEC 60898, IEC 60947-2 | |
| Approvals | VDE, KEMA, CE | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B10D3040A used for?
The IMO B10D3040A is used to protect three-phase electrical circuits against overloads and short circuits in industrial, commercial and automation applications.
What is the current rating of this MCB?
This miniature circuit breaker has a 40 A rated current.
What does D curve mean?
A D curve MCB is designed for circuits with high inrush currents, making it suitable for motors, transformers and other inductive loads.
What is the breaking capacity of the B10D3040A?
The B10D3040A provides a 10 kA short circuit breaking capacity.
How is this circuit breaker mounted?
The breaker is designed for installation on a standard 35 mm DIN rail inside distribution boards, control panels and electrical enclosures.
Trusted by Electrical Professionals Worldwide
IMO B10 miniature circuit breakers are trusted by electrical contractors, panel builders and industrial engineers for reliable circuit protection, simple installation and dependable performance in demanding low voltage systems.
