Hager CEC426J Onekonekt RCCB 25A 4-Pole 100mA Type AC – ELCB
The Hager CEC426J is a 25A, 4-pole residual current circuit breaker (RCCB/ELCB) with 100mA Type AC sensitivity from Hager's Onekonekt range, built for earth-leakage protection on UAE distribution boards in residential and light-commercial installations. Its bottom terminal is a bi-connect design that accepts either cables or Hager's Onekonekt busbar system, letting electricians wire panels faster while still working exactly like a standard screw terminal when a busbar isn't used.
Key Features
- Rated current 25A across 4 poles (3P+N), for three-phase-plus-neutral distribution circuits
- Rated residual operating current (sensitivity): 100mA, Type AC — for equipment protection on distribution circuits
- Rated operational voltage 240/415V AC, 50Hz
- Onekonekt bi-connect bottom terminal accepts either cables or a Hager busbar, with a screw top terminal
- Rated conditional short-circuit current (Inc) 6kA to EN 61008-1; breaking capacity 1.5kA
- Wide conductor range: 1–25mm² solid / 1–16mm² flexible, tightening torque 2.8Nm
- Compact DIN-rail mounting, 4 modules wide (70 x 83 x 70mm); IP20 protection
- Mechanical endurance 4000 operations, electrical endurance 2000 cycles
Technical Specifications
| Specification |
Details |
| Brand |
Hager |
| Series / Model |
Onekonekt CEC426J |
| Device Type |
RCCB / ELCB |
| Rated Current |
25A |
| Poles |
4P (3P+N) |
| Sensitivity |
100mA, Type AC |
| Rated Operational Voltage |
240/415V AC |
| Rated Frequency |
50Hz |
| Breaking Capacity (Idm) |
1.5kA |
| Rated Conditional Short-Circuit Current (Inc) |
6kA (EN 61008-1) |
| Terminal Type |
Screw top / Onekonekt bi-connect bottom |
| Conductor Range |
1–25mm² solid, 1–16mm² flexible |
| Mounting / Width |
DIN rail, 4 modules (70mm) |
| Dimensions (W x H x D) |
70 x 83 x 70mm |
| Protection Rating |
IP20 |
| Mechanical / Electrical Endurance |
4000 operations / 2000 cycles |
| Operating Temperature |
-25°C to 60°C rated (derated to 18A at 70°C) |
| Standards |
EN 61008-1 / IEC safety standards |
Applications
- Residential homes and villas
- Commercial spaces: offices, schools, healthcare facilities
- Industrial power distribution systems
- Projects requiring medium-sensitivity earth leakage protection
FAQ
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What's the difference between an MCB and an RCCB/ELCB?
An MCB protects against overload and short-circuit faults. An RCCB/ELCB like the CEC426J monitors earth leakage current and trips on imbalance, protecting against electric shock and earth faults an MCB cannot detect. The two are complementary and commonly fitted together in a distribution board.
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What does the 100mA sensitivity rating mean?
The CEC426J trips at a 100mA earth-leakage imbalance, a sensitivity set for equipment and fire protection on distribution circuits rather than the 30mA rating used for direct personnel shock protection on final circuits — pair it with 30mA RCCBs/RCBOs downstream where personnel protection is required.
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How many poles do I need — what does 4-pole (3P+N) mean for this circuit?
4-pole (3 phase + neutral) means the device switches all four conductors of a three-phase supply, including the neutral. Use it on three-phase distribution boards; single-phase circuits typically use a 2-pole device instead.
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Can I install this myself?
No. The CEC426J is a distribution board component and must be installed and commissioned by a licensed electrician in accordance with UAE wiring regulations.
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What is Onekonekt, and can I still wire this with standard cables?
Onekonekt is Hager's bi-connect terminal and busbar system for modular protection devices. The CEC426J's bottom terminal accepts either standard cables in the terminal cage or a Hager Onekonekt busbar — busbars simply speed up panel wiring on multi-way boards, and standard cable connection works exactly as normal when a busbar isn't used.
