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.
B10C4010A IMO MCB 10kA, C Curve 4 Pole, 10A
£28.47
Why Choose the IMO B10C4010A Miniature Circuit Breaker?
The IMO B10C4010A is a robust four-pole miniature circuit breaker designed to protect three-phase electrical circuits against overload and short-circuit conditions. Part of the IMO B10 circuit protection range, this compact MCB provides simultaneous switching across four poles, making it suitable for industrial control panels, commercial distribution boards and OEM machinery.
With a 10 A rated current and a C curve tripping characteristic, the B10C4010A is well suited to circuits containing equipment with moderate starting currents. Typical loads include control transformers, contactors, solenoid valves, small motors, pumps and automation equipment where a B curve breaker could be more susceptible to nuisance tripping.
The IMO B10C4010A offers a high 10 kA short-circuit breaking capacity in accordance with IEC 60898-1. Its thermal-magnetic operating mechanism provides protection against prolonged overloads and rapid disconnection during short-circuit faults, helping protect conductors, switchgear and connected equipment.
Key Advantages
- Four-pole protection for three-phase electrical systems.
- 10 A rated current for control and power circuits.
- C curve characteristic accommodates moderate inrush currents.
- 10 kA breaking capacity for dependable fault interruption.
- Thermal-magnetic overload and short-circuit protection.
- Compact modular design for DIN rail installation.
Key Features
- IMO B10 Series miniature circuit breaker.
- Four-pole configuration.
- 10 A rated current.
- C curve tripping characteristic.
- 10 kA rated short-circuit breaking capacity.
- Thermal-magnetic operating mechanism.
- Central-tripping handle for circuit fault indication.
- Contact position indicator window.
- Finger-protected IP20 connection terminals.
- Compatible with terminal, pin and fork-type busbar connections.
- Suitable for standard 35 mm DIN rail mounting.
Reliable Four-Pole Protection for Three-Phase Systems
The IMO B10C4010A uses a thermal element to respond to sustained overload currents and a magnetic element to provide rapid operation during severe short-circuit conditions. This dual protection method helps prevent excessive conductor heating and reduces the risk of damage to connected electrical equipment.
Its C curve characteristic provides instantaneous tripping at approximately five to ten times the rated current. This makes the breaker suitable for circuits where normal energisation may produce a temporary current surge, including contactor coils, transformers, solenoids and smaller inductive loads.
The mechanically linked four-pole configuration disconnects all poles together when the breaker is manually switched or automatically trips. This supports safe circuit isolation and makes the B10C4010A a practical choice for three-phase distribution and control applications.
Typical Applications
- Industrial control panels.
- Three-phase distribution boards.
- Automation and process control equipment.
- Control transformer circuits.
- Contactor and solenoid circuits.
- Small motor and pump circuits.
- Building management systems.
- OEM machinery and production equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 10 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | IMO Precision Controls | |
| Series | B10 Miniature Circuit Breakers | |
| Model | B10C4010A | |
| Product type | Miniature circuit breaker | |
| Rated current | 10 A | |
| Number of poles | 4 | |
| Trip characteristic | C Curve | |
| Instantaneous tripping range | 5 to 10 times rated current | |
| Rated voltage | 240/415 V AC | |
| Maximum DC voltage | 60 V DC | |
| Rated frequency | 50/60 Hz | |
| Breaking capacity | 10 kA | |
| Rated impulse withstand voltage | 6.2 kV | |
| Energy limiting class | Class 3 | |
| Protection mechanism | Thermal-magnetic | |
| Standard | IEC 60898-1 | |
| Protection degree | IP20 | |
| Terminal capacity | Up to 35 mm² solid or 25 mm² stranded conductor | |
| Recommended tightening torque | 2.0 Nm | |
| Mechanical lifetime | More than 20,000 cycles | |
| Electrical lifetime | Up to 4,000 cycles | |
| Operating temperature | -30°C to +60°C | |
| Mounting type | DIN rail to EN 60715 | |
| Approximate width | 70.3 mm | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B10C4010A used for?
The IMO B10C4010A is used to protect four-pole electrical circuits against overload and short-circuit conditions in industrial, commercial and OEM installations.
What current rating does the B10C4010A have?
The circuit breaker has a rated current of 10 A.
What does the C curve characteristic mean?
The C curve characteristic provides instantaneous tripping at approximately five to ten times the rated current, making the breaker suitable for circuits with moderate inrush currents.
How many poles does the B10C4010A have?
The B10C4010A has a four-pole configuration, with all four poles mechanically linked for simultaneous switching and fault disconnection.
What is the breaking capacity of the B10C4010A?
The breaker has a 10 kA short-circuit breaking capacity in accordance with IEC 60898-1.
How is the IMO B10C4010A installed?
The breaker is designed for mounting on a standard 35 mm DIN rail inside an electrical distribution board, switchboard or industrial control panel.
Trusted Circuit Protection for Professional Installations
IMO miniature circuit breakers are selected by panel builders, electrical contractors and automation engineers for reliable fault protection, compact DIN rail installation and dependable performance in industrial electrical systems.
