ABB ELCB/RCCB FH204 AC-63/0.1 4-Pole 63A 100mA
The ABB FH204 AC-63/0.1 is a 4-pole RCCB rated 63A with 100mA sensitivity for fire-protection earth fault protection on larger incoming circuits in UAE commercial distribution boards. It provides reliable leakage protection at the main incoming level where selective coordination with downstream 30mA devices is required.
Key Features
- 63A 4-pole RCCB for large three-phase incoming protection
- 100mA sensitivity for fire-protection upstream ELCB duty
- Type AC for sinusoidal AC residual currents
- DIN rail mounting
- Genuine ABB FH200 series quality
Technical Specifications
| Specification |
Details |
| Brand |
ABB |
| Model |
FH204 AC-63/0.1 |
| Article Number |
2CSF204006R2630 |
| Rated Current |
63A |
| Poles |
4 |
| Sensitivity |
100mA |
| Type |
AC |
| Voltage |
415V AC |
| Mounting |
DIN Rail |
Applications
- Main incoming protection in commercial and industrial DBs
- Selective coordination with 30mA downstream devices
- Three-phase sub-main fire protection circuits
- FM and maintenance incoming protection replacements
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 100mA sensitivity rating mean?
100mA RCCBs are sized for fire and equipment protection on larger circuits and sub-mains, not personal shock protection — that requires a 30mA device. A 100mA unit is a common choice as a main incomer or sub-distribution protection device upstream of 30mA final-circuit RCDs.
-
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.
