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B10R4040-300 IMO RCD 10KA, 300mA 3 Pole + N, 40 Amp, 415VAC
£42.61
Why Choose the IMO B10R4040-300 Residual Current Circuit Breaker?
The IMO B10R4040-300 is a dependable Residual Current Circuit Breaker (RCCB) designed to provide reliable protection against earth leakage faults in commercial, industrial and electrical distribution systems. Manufactured by IMO Precision Controls, this four-pole RCCB continuously monitors the current flowing through a three-phase plus neutral circuit and disconnects the electrical supply whenever hazardous residual currents are detected, helping protect electrical installations and reduce the risk of fire caused by earth faults.
Designed in accordance with IEC 61008-1, the B10R4040-300 features a compact DIN rail mounting format, making it ideal for installation in distribution boards, control panels and industrial switchgear. Its robust construction and dependable performance make it suitable for demanding commercial and industrial environments.
With a 40A rated current, 300mA residual operating current, Type AC protection and a 400/415V AC three-phase plus neutral supply, the IMO B10R4040-300 is ideal for power distribution systems requiring reliable earth fault and fire protection.
Key Advantages
- High-quality 4-pole residual current circuit breaker for commercial and industrial installations.
- 40A rated current suitable for three-phase electrical circuits.
- 300mA residual current sensitivity for earth fault and fire protection.
- Type AC protection for alternating residual currents.
- 10kA conditional short-circuit rating.
- Compact DIN rail mounting for straightforward installation.
Key Features
- IMO B10R Residual Current Circuit Breaker series.
- 40A rated current.
- 300mA rated residual operating current (IΔn).
- 400/415V AC operating voltage.
- 3 Pole + Neutral (4 Pole) configuration.
- Type AC residual current protection.
- 10kA conditional short-circuit rating.
- DIN rail mounting.
- Manufactured in accordance with IEC 61008-1.
- IP20 protection rating.
Reliable Earth Fault and Fire Protection
Residual Current Circuit Breakers continuously monitor current flowing through live conductors and disconnect the supply whenever earth leakage currents exceed the rated operating threshold. A 300mA RCCB is typically used to provide earth fault and fire protection in commercial and industrial electrical installations while helping reduce the risk of damage caused by insulation faults.
The IMO B10R series combines dependable protection, compact dimensions and straightforward DIN rail installation, making it suitable for industrial machinery, commercial buildings and modern electrical distribution systems.
Typical Applications
- Industrial distribution boards.
- Commercial electrical installations.
- Machine control panels.
- Manufacturing facilities.
- Building services infrastructure.
- Three-phase power distribution systems.
- Circuits requiring 300mA earth leakage protection.
Technical Specifications
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| Voltage | 415 V | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | RCD | |
| Residual Current | 300 mA | |
| Manufacturer | IMO Precision Controls | |
| Series | B10R RCCB | |
| Model | B10R4040-300 | |
| Product type | Residual Current Circuit Breaker (RCCB) | |
| Rated current | 40A | |
| Rated residual operating current | 300mA | |
| Residual current characteristic | Type AC | |
| Rated voltage | 400/415V AC | |
| Frequency | 50 / 60Hz | |
| Pole configuration | 3 Pole + Neutral (4 Pole) | |
| Rated conditional short-circuit current | 10kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail EN 60715 | |
| Operating temperature | -30°C to +60°C | |
| Compliance | IEC 61008-1 | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B10R4040-300 used for?
It protects three-phase electrical circuits by disconnecting the power supply whenever earth leakage currents exceed the rated operating level.
What is the rated current of this RCCB?
The IMO B10R4040-300 has a 40A rated current.
What residual current sensitivity does it provide?
This model provides 300mA residual operating current (IΔn), making it suitable for earth fault and fire protection applications.
What type of residual current does it detect?
The B10R4040-300 is a Type AC RCCB, designed to detect sinusoidal alternating residual currents.
Does this RCCB provide overload protection?
No. The B10R4040-300 provides residual current protection only and must be installed alongside an appropriately rated circuit breaker or fuse to provide overload and short-circuit protection.
Trusted Protection for Industrial Electrical Systems
IMO Precision Controls residual current circuit breakers are trusted by electrical contractors, panel builders and industrial engineers for dependable earth leakage protection, reliable performance and compliance with recognised international safety standards.
