Ningbo Doto Electric Co., Ltd.
Ningbo Doto Electric Co., Ltd.
The Doto L8-63 4P residual current circuit breaker (RCCB) provides earth-leakage protection for three-phase four-wire circuits, with a yellow test handle and clearly marked test button per IEC/EN 61008-1. Sensitivities of 30mA, 100mA and 300mA cover both personal protection and fire prevention, with AC, A and S waveform types available. Rated 16-100A at 230/400V, it withstands 6kA impulses and 6-10kA short-circuit currents with suitable back-up fuses, making it a dependable main-switch RCD for commercial and industrial boards.
| Rated current (In) | 16A, 20A, 25A, 32A, 40A, 63A, 80A, 100A |
|---|---|
| Number of pole | 1P+N (2P), 3P+N (4P) |
| Rated residual currents | 30mA, 100mA, 300mA |
| Sensitivity to residual current | AC, A, S |
| Rated short circuit current Icn | 6kA, 10kA |
| Rated working voltage (Ue) | 230V/240V AC, 400V/415V AC |
| Rated frequency | 50/60Hz |
| Rated insulated voltage (Ui) | 500VAC |
| Rated impulse withstand voltage (Uimp) | 6KV |
| Mechanical endurance | 20000 cycles |
| Electrical endurance | 10000 cycles |
| Protection degree | IP20 |
| Terminal tightening torque | 2-2.5 N.m |
| Wiring termination | 35 mm2 |
| Ambient temperature | -25 to +55°C, 95% humidity max. |
| Altitude above sea | 2000 m max. |
| Conformed standards | IEC/EN 61008-1 |
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Professional manufacturer of AC contactors, circuit breakers, capacitors, hour meters and counters. Factory-direct, CE & ROHS certified, exporting worldwide.
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