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.
£48.55
The IMO B10R4063-300 is a high-quality Residual Current Circuit Breaker (RCCB) engineered to provide dependable protection against earth leakage faults in commercial and industrial electrical installations. Manufactured by IMO Precision Controls, this four-pole RCCB continuously monitors current flowing through a three-phase plus neutral circuit and disconnects the electrical supply whenever hazardous residual currents are detected, helping reduce the risk of fire caused by earth faults.
Designed in accordance with IEC/EN 61008-1, the B10R4063-300 features a compact modular design for straightforward installation on standard TS35 DIN rail systems within distribution boards, switchgear and industrial control panels. Its robust construction makes it ideal for demanding industrial and commercial environments.
With a 63A rated current, 300mA residual operating current, Type AC protection and a 230/400V AC three-phase plus neutral supply, the IMO B10R4063-300 is ideal for distribution systems requiring 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 specified to provide earth fault and fire protection in commercial and industrial electrical installations, helping reduce the risk of equipment damage and electrical fires 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.
Tick the specs you need, then view products that match.
| 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 | B10R4063-300 | |
| Product type | Residual Current Circuit Breaker (RCCB) | |
| Rated current | 63A | |
| Rated residual operating current | 300mA | |
| Residual current characteristic | Type AC | |
| Rated voltage | 230/400V AC | |
| Frequency | 50 / 60Hz | |
| Pole configuration | 3 Pole + Neutral (4 Pole) | |
| Rated conditional short-circuit current | 10kA | |
| Protection rating | IP20 | |
| Mounting type | TS35 DIN rail | |
| Terminal capacity | 1 to 25mm² | |
| Dimensions (H × W × D) | 81 × 73.5 × 78.5mm | |
| Weight | Approx. 0.412kg | |
| Compliance | IEC/EN 61008-1 | |
| HS Code | 8536201090 | |
| Country of Manufacture | China |
It protects three-phase electrical circuits by disconnecting the power supply whenever earth leakage currents exceed the rated operating level.
The IMO B10R4063-300 has a 63A rated current.
This model provides 300mA residual operating current (IΔn), making it suitable for earth fault and fire protection applications.
The B10R4063-300 is a Type AC RCCB, designed to detect sinusoidal alternating residual currents.
No. The B10R4063-300 provides residual current protection only and must be installed alongside an appropriately rated circuit breaker or fuse to provide overload and short-circuit protection.
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.
We use cookies
We use essential cookies to run this site, your basket and checkout. With your permission we'd also like to use analytics and advertising cookies to understand how the site is used and to measure our adverts.