ABB ELCB/RCCB 40A, 4-pole, 30 mA residual-current device (FH204 AC-40/0,03) provides reliable protection against electric shocks and equipment damage by continuously monitoring current and tripping on leakage. Designed for 400V systems, it suits UAE installations where safety and reliability are critical.
Key Features
- Rated current: 40A
- Number of poles: 4
- Residual current: 30 mA
- Operating characteristic: Instantaneous
- Rated voltage: 400V
- Power loss: 3.2 W per pole (rated conditions)
- Standards: IEC 61008
- RoHS compliant
- Dimensions: 70 × 85 × 69 mm; Weight: 0.360 kg
- Model: FH204 AC-40/0,03
- EAN: 8012542895206
Technical Specifications
| Specification |
Value |
| Brand |
ABB |
| Model |
FH204 AC-40/0,03 |
| Rated current |
40A |
| Number of poles |
4 |
| Residual current |
30 mA |
| Operating characteristic |
Instantaneous |
| Rated voltage |
400V |
| Power loss |
3.2 W per pole (rated conditions) |
| Standards |
IEC 61008 |
| Ambient temperature |
-25 to 55°C |
| RoHS |
Compliant (EU 2011/65/EU) |
| Dimensions (W×H×D) |
70 × 85 × 69 mm |
| Weight |
0.360 kg |
| Package |
1 unit per package; gross weight 0.403 kg |
| EAN |
8012542895206 |
Applications
- Residential distribution boards and home electrical protection
- Commercial spaces and offices needing reliable leakage protection
- Industrial panels with 4-wire 400V systems requiring 30 mA discrimination
- Easy retrofit into ABB-compatible panels for UAE projects
FAQ
-
What's the difference between an MCB and an RCCB/RCD?
An MCB protects circuits and wiring against overload and short-circuit current. An RCCB like this one protects against earth leakage by monitoring current imbalance and disconnecting the circuit — the two are complementary and are normally installed together in a distribution board.
-
What does the 30mA sensitivity rating mean?
30mA RCCBs are sized for personnel/shock protection on final circuits — the standard choice for socket outlets and circuits people directly touch.
-
How many poles do I need?
A 4-pole (4P) RCCB switches all three phases plus neutral together. Use 4P for three-phase supplies or distribution boards where the neutral must also be isolated; 2-pole devices are used for single-phase circuits.
-
Can this be used alongside MCBs in the same board?
Yes. This RCCB is typically installed upstream of the MCBs it protects, on the same DIN rail, so a leakage fault trips the RCCB while overloads/short circuits are still cleared by the individual MCBs.
-
Can I install this myself?
No. RCCBs are wired into a live distribution board and must be installed by a licensed electrician in line with UAE wiring regulations.
