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B10R4025-30-A IMO RCD 10KA, 30mA 3 Pole + N, 25 Amp, 415VAC
£67.80
Why Choose the IMO B10R4025-30-A Type A Residual Current Circuit Breaker?
The IMO B10R4025-30-A is a reliable Type A Residual Current Circuit Breaker (RCCB) designed to protect commercial and industrial electrical installations against earth fault and leakage currents. Manufactured by IMO Precision Controls, this four-pole RCCB automatically disconnects the electrical supply when residual current reaches its operating threshold, helping protect people, equipment and electrical infrastructure.
Unlike a conventional Type AC device, the B10R4025-30-A detects both sinusoidal alternating residual currents and pulsating DC residual currents. This makes it suitable for modern installations containing electronic controls, rectifier circuits, switch-mode power supplies and other equipment capable of generating pulsating DC leakage.
With a 25 A rated current, 30 mA rated residual operating current, four-pole configuration and 400 V AC rated voltage, the IMO B10R4025-30-A is suitable for three-phase plus neutral circuits requiring additional protection against electric shock. Its DIN rail format supports straightforward installation within electrical distribution boards and control panels.
Key Advantages
- Dependable four-pole residual current protection for three-phase plus neutral circuits.
- 25 A rated current for commercial and industrial electrical installations.
- 30 mA residual current sensitivity for additional protection against electric shock.
- Type A detection for alternating and pulsating DC residual currents.
- 10 kA rated conditional short-circuit current.
- Compact DIN rail mounting for straightforward panel installation.
Key Features
- IMO B10R residual current circuit breaker series.
- 25 A rated current.
- 30 mA rated residual operating current (IΔn).
- Type A residual current characteristic.
- Three-phase plus neutral, four-pole configuration.
- 400 V AC rated voltage.
- 50/60 Hz rated frequency.
- 10 kA conditional short-circuit rating.
- DIN rail mounting to EN 60715.
- Manufactured in accordance with IEC 61008-1.
Type A Earth Leakage Protection for Modern Installations
Type A RCCBs monitor electrical circuits for sinusoidal AC and pulsating DC residual currents. If an imbalance indicates that current is leaking to earth, the RCCB disconnects the supply to help reduce the risk of electric shock, electrical fire and damage caused by insulation faults.
The 30 mA operating sensitivity provides additional protection against electric shock, while the four-pole arrangement monitors every live conductor in a three-phase plus neutral circuit. As an RCCB does not provide overload or short-circuit protection, the B10R4025-30-A must be installed with a suitably rated fuse or circuit breaker.
Typical Applications
- Three-phase commercial distribution boards.
- Industrial control panels and machinery supplies.
- Circuits containing electronic control equipment.
- Equipment incorporating rectifiers or switch-mode power supplies.
- Manufacturing and processing facilities.
- Power distribution systems requiring 30 mA Type A protection.
Technical Specifications
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| Voltage | 415 V | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | RCD | |
| Residual Current | 30 mA | |
| Manufacturer | IMO Precision Controls | |
| Series | B10R | |
| Model | B10R4025-30-A | |
| Product type | Type A Residual Current Circuit Breaker (RCCB) | |
| Rated current | 25 A | |
| Rated residual operating current | 30 mA | |
| Residual current characteristic | Type A | |
| Rated voltage | 400 V AC | |
| Rated frequency | 50/60 Hz | |
| Pole configuration | 3 pole + neutral (4 pole) | |
| Maximum switching time at IΔn | 100 ms | |
| Residual tripping current range | 0.5 IΔn to 1 IΔn | |
| Rated conditional short-circuit current | 10 kA | |
| Electrical lifetime | More than 4,000 cycles | |
| Terminal capacity | 35 mm² solid / 25 mm² stranded | |
| Fastening torque | 2.0 Nm | |
| Protection rating | IP20 | |
| Energy-limiting class | Class 3 | |
| Mounting type | DIN rail EN 60715 | |
| Operating temperature | -25°C to +55°C | |
| Dimensions (H × W × D) | approx. 81 × 70.5 × 49.7 mm | |
| Compliance standard | IEC 61008-1 | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO B10R4025-30-A used for?
It protects three-phase plus neutral electrical circuits against earth leakage by disconnecting the supply when residual current reaches the device’s operating threshold.
What does Type A mean on this RCCB?
Type A means the RCCB detects sinusoidal alternating residual currents and pulsating DC residual currents produced by many modern electronic devices.
What is the rated current of the B10R4025-30-A?
The IMO B10R4025-30-A has a rated current of 25 A.
What residual current sensitivity does this model provide?
This RCCB has a rated residual operating current of 30 mA, making it suitable for circuits requiring additional protection against electric shock.
Does the B10R4025-30-A provide overload protection?
No. The B10R4025-30-A provides residual current protection only and must be installed with an appropriately rated fuse or circuit breaker for overload and short-circuit protection.
Trusted Electrical Protection from IMO
IMO B10R residual current circuit breakers provide electrical contractors, panel builders and industrial engineers with reliable earth leakage protection, robust DIN rail installation and compliance with recognised international electrical safety standards.
