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ABB F204 A S-125/0.5 RCD – 4P – Type A Selective – 125A – 500mA
ABB F204 A S-125/0.5 four-pole Type A selective residual current circuit breaker rated at 125 A with 500 mA sensitivity for three-phase electrical distribution systems.
£1,863.09
Why Choose the ABB F204 A S-125/0.5 Residual Current Circuit Breaker?
The ABB F204 A S-125/0.5 is a heavy-duty four-pole selective residual current circuit breaker (RCCB) designed to provide dependable earth fault protection in commercial, industrial and infrastructure electrical installations. As part of the trusted ABB F200 RCCB series, it helps protect people, equipment and installations by detecting residual current faults and disconnecting the circuit when leakage current exceeds the rated threshold.
This Type A selective RCCB detects alternating residual currents and pulsating DC residual currents generated by modern electrical equipment. Its 125 A rated current and 500 mA residual operating current make it suitable for upstream protection in higher-load three-phase distribution systems where selective coordination with downstream residual current devices is required.
With its four-pole DIN rail mounted design, robust screw terminal connections and compact modular construction, the F204 A S-125/0.5 is ideal for professional switchboards, distribution boards and control panels requiring reliable residual current protection with delayed selective tripping behaviour.
Key Advantages
- Selective four-pole RCCB for three-phase electrical installations.
- 125 A rated current for higher-load commercial and industrial systems.
- 500 mA residual current sensitivity for installation-level earth fault protection.
- Type A residual current detection for AC and pulsating DC residual currents.
- Selective time-delayed tripping improves discrimination with downstream RCDs.
- DIN rail mounting for distribution boards, switchboards and control panels.
Key Features
- ABB F200 residual current circuit breaker series.
- Four-pole (4P) RCCB configuration.
- 125 A rated operational current.
- 500 mA rated residual operating current.
- Type A selective residual current protection.
- Suitable for 230 / 400 V AC electrical systems.
- Designed for professional low voltage distribution systems.
- DIN rail mounting with screw terminal connections.
Selective Earth Fault Protection for High-Load Distribution
Residual current circuit breakers continuously monitor the balance between live conductors and the neutral conductor. If earth leakage is detected, the RCCB disconnects the protected circuit to help reduce the risk of electric shock, electrical fire and damage to connected equipment.
The selective operating characteristic of the ABB F204 A S-125/0.5 provides intentional delayed tripping, helping improve coordination with downstream residual current devices. This supports continuity of service by allowing downstream protection to operate first where appropriate.
Typical Applications
- Commercial electrical distribution boards.
- Industrial switchboards and control panels.
- Higher-load three-phase power distribution systems.
- Upstream residual current protection.
- Building services and plant room installations.
- Electrical systems requiring selective RCD coordination.
Technical Specifications
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| Product Series | ABB F200 | |
|---|---|---|
| Current | 125 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | RCD | |
| Residual Current | 500 mA | |
| RCD Type | Type A | |
| Manufacturer | ABB | |
| Series | F200 RCCB Series | |
| Model | F204 A S-125/0.5 | |
| Manufacturer Part Number | 2CSF204201R4950 | |
| EAN | 8012542968405 | |
| Product type | Residual Current Circuit Breaker (RCCB) | |
| Residual current type | Type A | |
| Operating characteristic | Selective | |
| Number of poles | 4P | |
| Rated current | 125 A | |
| Rated residual operating current | 500 mA | |
| Rated operational voltage | 230 / 400 V AC | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 4 kV | |
| Test voltage | 100-250 V | |
| Standards | IEC / EN 61008 | |
| Protection rating | IP2X | |
| Pollution degree | 2 | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 85 × 72 × 69.5 mm | |
| Weight | Approx. 500 g |
Frequently Asked Questions
What is the ABB F204 A S-125/0.5 used for?
The ABB F204 A S-125/0.5 is used to provide selective residual current protection in three-phase electrical installations, helping isolate earth leakage faults while coordinating with downstream protective devices.
What does the 125 A rating mean?
The 125 A rated current indicates the maximum current the RCCB is designed to carry continuously under normal operating conditions.
What does the 500 mA sensitivity mean?
The 500 mA residual operating current is the earth leakage threshold at which the RCCB is designed to disconnect the circuit.
What is the benefit of a selective RCCB?
A selective RCCB uses time-delayed tripping to improve discrimination with downstream residual current devices, helping reduce unnecessary upstream power interruptions.
How is the ABB F204 A S-125/0.5 installed?
The RCCB mounts directly onto a standard DIN rail within distribution boards, switchboards and electrical control panels.
Trusted by Electrical Professionals Worldwide
ABB F200 series residual current circuit breakers are widely trusted by electrical contractors, panel builders and maintenance engineers for dependable earth fault protection across commercial and industrial installations.
