ABB F204 AC-125/0.3 L four pole Type AC residual current circuit breaker with 125 A rated current, 300 mA residual operating current and left-hand neutral configuration for commercial and industrial electrical protection.
£1,444.15
The ABB F204 AC-125/0.3 L is a high-capacity 4 pole residual current circuit breaker (RCCB) designed to provide dependable protection against earth leakage faults in commercial, industrial and infrastructure electrical installations. As part of the trusted ABB F200 Series, it delivers reliable residual current protection for demanding three-phase distribution systems.
With a 125 A rated current and a 300 mA rated residual operating current, this RCCB is suitable for higher-load electrical installations where dependable earth fault and fire protection is required. Its Type AC characteristic detects alternating sinusoidal residual currents, helping reduce the risk of electric shock and electrical fires caused by insulation faults.
The L variant features the neutral terminal positioned on the left, making it suitable for switchboards and distribution boards requiring this specific wiring arrangement. Its compact DIN rail design, robust construction and ABB engineering quality make it a reliable choice for professional electrical installations.
Residual current circuit breakers monitor the current balance between live conductors and disconnect the circuit when earth leakage is detected. This helps protect people, equipment and buildings from hazards caused by insulation failure, accidental contact with live parts or fault currents to earth.
The ABB F204 AC-125/0.3 L is designed for higher-current three-phase installations where dependable residual current protection is essential. Its 4 pole configuration and left-hand neutral arrangement make it well suited to professional distribution boards, switchgear assemblies and industrial control panels.
| Current | 125 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | F200 RCCB Series |
| Model | F204 AC-125/0.3 L |
| Product ID | 2CSF204023R3950 |
| Product type | Residual Current Circuit Breaker (RCCB) |
| Rated current | 125 A |
| Rated residual operating current | 300 mA |
| Residual current type | Type AC |
| Rated operational voltage | 230 / 400 V AC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 4 kV |
| Frequency | 50 / 60 Hz |
| Number of poles | 4 |
| Operating characteristic | Instantaneous |
| Rated conditional short-circuit current | 10 kA |
| Maximum surge current | 0.25 kA |
| Protection rating | IP2X |
| Mounting type | DIN rail |
| Neutral terminal position | Left |
| Dimensions (H × W × D) | approx. 85 × 72 × 69.5 mm |
| Weight | approx. 0.50 kg |
| Standards | IEC/EN 61008 |
It provides residual current protection by disconnecting the circuit when earth leakage current is detected, helping protect people, equipment and electrical installations.
The 125 A rating indicates the maximum continuous current the RCCB is designed to carry under normal operating conditions.
The 300 mA residual operating current provides earth leakage protection commonly used for equipment protection and reducing fire risk in electrical installations.
Type AC means the device is designed to detect alternating sinusoidal residual currents.
The L version indicates that the neutral terminal is positioned on the left-hand side, making it suitable for distribution boards requiring this wiring arrangement.
ABB F200 Series residual current circuit breakers are widely trusted by electricians, panel builders and electrical engineers for dependable earth leakage protection, robust construction and reliable performance in demanding installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...