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.
B10B1040A IMO MCB 10kA, B Curve 1 Pole, 40 Amp
£7.12
Why Choose the IMO B10B1040A Miniature Circuit Breaker?
The IMO B10B1040A is a compact and reliable single-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit conditions. Part of the IMO B10 circuit protection range, it provides dependable protection for industrial control panels, commercial electrical systems and OEM machinery.
With a rated current of 40 A and a B curve tripping characteristic, the B10B1040A is suitable for circuits with relatively low inrush currents. It is commonly used with resistive loads, lighting circuits, control equipment and general electrical distribution applications where prompt fault disconnection is required.
The breaker features a single-pole configuration and a compact modular design for installation on a standard 35 mm DIN rail. Its thermal-magnetic operating mechanism provides protection against sustained overloads and rapid disconnection during short-circuit faults, helping safeguard connected equipment and electrical wiring.
Key Advantages
- Compact single-pole miniature circuit breaker.
- 40 A rated current for general electrical circuits.
- B curve tripping characteristic suitable for low-inrush loads.
- Provides reliable overload and short-circuit protection.
- DIN rail mounting enables straightforward panel installation.
- Manual reset allows convenient restoration after a fault is resolved.
Key Features
- IMO B10 miniature circuit breaker series.
- 40 A rated current.
- B curve operating characteristic.
- Single-pole configuration.
- Thermal-magnetic protection mechanism.
- Compact modular construction.
- Manual switching and circuit isolation capability.
- Suitable for standard 35 mm DIN rail mounting.
Reliable Protection for General Electrical Circuits
The IMO B10B1040A uses thermal-magnetic technology to provide two forms of circuit protection. Its thermal element responds to sustained overload currents, while the magnetic element disconnects the circuit rapidly when a significant short-circuit fault occurs.
The B curve characteristic is designed to operate at a lower instantaneous current threshold than C or D curve breakers. This makes the B10B1040A particularly suitable for lighting, heating, control equipment and other loads that do not normally produce high starting currents.
Typical Applications
- Industrial control panels.
- Commercial electrical distribution boards.
- Lighting and heating circuits.
- Resistive electrical loads.
- Control and instrumentation equipment.
- OEM machinery and automation systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 40 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Manufacturer | IMO Precision Controls | |
| Series | B10 | |
| Model | B10B1040A | |
| Product type | Miniature circuit breaker | |
| Rated current | 40 A | |
| Number of poles | 1 | |
| Trip characteristic | B Curve | |
| Protection function | Overload and short-circuit protection | |
| Operating mechanism | Thermal-magnetic | |
| Application | Single-phase AC circuits | |
| Mounting type | 35 mm DIN rail | |
| Installation location | Electrical distribution board or control panel | |
| Reset type | Manual reset | |
| Connection type | Screw terminals | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B10B1040A used for?
The IMO B10B1040A is used to protect single-phase electrical circuits and connected equipment against overload and short-circuit conditions.
What is the rated current of the B10B1040A?
The miniature circuit breaker has a rated current of 40 A.
What does the B curve characteristic mean?
A B curve circuit breaker is designed for circuits with relatively low inrush currents, including lighting, heating, control equipment and other resistive loads.
How many poles does this circuit breaker have?
The B10B1040A has a single-pole configuration for protecting one electrical conductor.
How is the IMO B10B1040A installed?
The breaker is designed for mounting on a standard 35 mm DIN rail inside an electrical distribution board or control panel.
Trusted Circuit Protection for Electrical Installations
IMO miniature circuit breakers are used by panel builders, electrical contractors and automation engineers to provide dependable circuit protection, convenient DIN rail installation and straightforward maintenance.
