Hager CF285Z RCCB 100A 2-Pole 300mA Type AC — ELCB
The Hager RCCB (ELCB) 100A 2-Pole 300mA – CF285Z delivers reliable protection against earth leakage faults, safeguarding both people and electrical installations. Made in France and built to IEC 61008-1, this high-current residual current device is designed for demanding residential, commercial, and industrial distribution boards where fire and equipment protection at the incomer or sub-main level is required.
Key Features
- Brand: Hager
- Model: CF285Z
- Rated Current: 100A
- Poles: 2P (Double Pole)
- Sensitivity: 300mA, Type AC
- Device Type: RCCB / ELCB (Earth Leakage Circuit Breaker)
- Fast tripping response to leakage currents
- Robust construction for demanding, high-current applications
- Complies with IEC 61008-1 for global safety assurance
Technical Specifications
| Specification |
Details |
| Model |
CF285Z |
| Number of Poles |
2P |
| Rated Current (In) |
100 A |
| Rated Residual Operating Current (IΔn) |
300 mA |
| Residual Current Type |
AC |
| Rated Frequency |
50 Hz |
| Breaking/Opening Capacity |
1500 A |
| Rated Conditional Short-Circuit Current (Inc, per EN 61008-1) |
6 kA |
| Impulse Withstand (8/20 µs wave, non-tripping) |
0.25 kA |
| Power Loss |
14.3 W total (7.6 W per pole) |
| Dimensions (H x W x D) |
83 x 35 x 70 mm |
| Module Width |
2 modules (DIN 43880 size 1) |
| Mounting |
DIN rail, type O (symmetrical) |
| Connection Type |
Screw terminals |
| Protection Index |
IP20 |
| Operating Temperature |
-25°C to 40°C |
| Storage/Transport Temperature |
-55°C to 70°C |
| Max Altitude |
2000 m |
| Pollution Degree |
2 (IEC 60664 / IEC 60947-2) |
| Mechanical Endurance |
4000 operations |
| Electrical Endurance |
2000 cycles |
| Standard |
IEC 61008-1 |
Applications
- Residential apartment blocks and villas
- Commercial facilities: offices, shops, schools
- Industrial power distribution systems
- Any high-current circuit requiring earth leakage protection
FAQ
-
What's the difference between an MCB and an RCCB/RCD?
An MCB (Miniature Circuit Breaker) protects a circuit against overload and short-circuit faults. An RCCB (Residual Current Circuit Breaker), also known as an ELCB, continuously monitors for earth leakage current and disconnects the supply if current is escaping to earth – protecting against electric shock and fire in a way an MCB cannot.
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What does the 300mA sensitivity rating mean?
300mA is a higher-sensitivity threshold aimed at fire and equipment protection rather than personal shock protection (which typically needs 30mA). The CF285Z is best used as a main incomer or sub-main device protecting large distribution circuits, with 30mA RCCBs/RCBOs used further downstream on final circuits for personnel protection.
-
How many poles do I need for this circuit?
This is a 2-pole (2P) device, switching both line and neutral. It is intended for single-phase distribution boards and incomers; three-phase boards require a 4-pole equivalent.
-
Can I install this myself?
No. This is a distribution-board-mounted device and must be installed and connected by a licensed electrician in accordance with UAE wiring regulations.
-
Is the CF285Z suitable as a main switch/incomer for a large board?
Yes – at 100A with 300mA sensitivity and a 6kA rated conditional short-circuit current, it is designed for high-load main or sub-main incomer protection on residential, commercial, and industrial boards.
