Noark
Noark 108411 Ex9L-N Selective RCCB 4P 63 A 300 mA Type A S
Noark 108411 Ex9L-N Selective RCCB 4P 63 A 300 mA Type A S
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Noark 108411 Ex9L-N Selective RCCB 4P 63 A 300 mA Type A S
The Noark 108411 is a pure residual current circuit breaker (RCCB) of the Ex9L-N series in a four-pole selective version: rated current 63 A, rated residual current 300 mA, Type A with S characteristic (selective, time-delayed tripping). It takes up 4 modules on the DIN rail, with a conditional short-circuit current of 6 kA.
The S characteristic introduces an intentional delay in tripping, so that in the event of an earth fault the high-sensitivity residual current device installed downstream trips first: it is therefore the correct device to use as the main residual current device in a two-level selective protection structure, where the 30 mA devices protect the individual lines and the 300 mA selective device provides back-up protection and protection against the risk of fire caused by earth fault currents. Thanks to selectivity, a fault on a final circuit does not put the entire installation out of service. Type A also detects pulsating unidirectional leakage currents. Being a pure RCCB, it does not protect against overload and short circuit.
Key features
Selective S characteristicTime-delayed tripping ensures discrimination with the 30 mA devices installed downstream, preventing a local fault from de-energising the whole board.
300 mA thresholdA typical value for a main residual current device, aimed at protection against the risk of fire caused by earth fault currents.
63 A four-pole ratingSized as the main device of three-phase 3P+N boards up to 63 A.
Type AAlso trips in the presence of pulsating unidirectional leakage currents generated by electronic loads.
Voltage-independent operationThe electromagnetic mechanism guarantees tripping even without mains voltage.
6 kA short-circuit withstandRated conditional short-circuit current of 6 kA with coordinated back-up protection.
Technical specifications
| Feature | Value |
|---|---|
| Product code | 108411 |
| Device type | Selective pure residual current circuit breaker (RCCB), Ex9L-N series |
| System side | Alternating current (AC) |
| Number of poles / phases | 4 poles (three-phase 3P+N) |
| Nominal current | 63 A |
| Rated residual current | 300 mA (0,3 A) |
| RCD type | Type A, S characteristic (selective, time-delayed) |
| Rated voltage (Ue) | 400 V AC (230 V phase-to-neutral) |
| Rated frequency | 50 Hz |
| Conditional short-circuit current | 6 kA |
| Miniature circuit breaker (MCB) | Not included (pure RCD, to be combined with MCBs) |
| Number of DIN modules | 4 |
| Protection rating | IP20 |
| Mounting | 35 mm DIN rail |
| Dimensions | 79 × 89 × 72 mm |
| Weight | 0.37 kg |
| Standards | IEC/EN 61008-1 (residual current devices without integral overcurrent protection) |
Installation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.