Main circuit protection in residential distribution systems
ETL1-63 Residual Current Circuit Breaker (RCCB) offers reliable protection against electrical leakage currents, significantly reducing the risk of electric shock caused by indirect contact. Designed for versatility, it supports both single-phase (240V, 1P+N) and three-phase (415V, 3P+N) power systems, with a rated current capacity of up to 63A. This ensures dependable performance for a wide range of applications in residential, commercial, and industrial environments.


| Technical Data | |
| Standard | IEC/EN 61008-1 |
| Protection | Ground fault |
| Type of trip | Electro-magnetic type |
| Residual current type | AC, A,A-SI, A-S |
| Break time at lΔn | AC, A undelayed type: ≤100ms |
| A-SI delay: 10-300ms | |
| A-S delay: 130-500ms | |
| No. of poles | 1P+N,3P+N, N Pole on the right |
| Insulation voltage (Ui) | 500V |
| Rated voltage (Ue) | 1P+N:230/240V~; 3P+N:400/415V~ |
| Rated currents (In) | 16, 25,32,40, 63A |
| Rated sensitivity currents (IΔn) | 10mA (only for 1P+N 16A,25A) |
| 30,100,300mA | |
| Rated residual making and breaking capacity (IΔm) | 500A (In≤50A) |
| 10In (In>50A) | |
| Rated frequency | 50/60Hz |
| Rated conditional short-circuit current (Inc=IΔc) | ETL1-63:6kA |
| ETL1-63H:10kA | |
| Rated impulse withstand voltage (Uimp) (1.2/50μs) | 4kV |
| Dielectric test voltage | 2kV(50/60Hz,1 min.) |
| Fire resistance (glow-wire test) | 960±15℃(Enclosure) |
| 650±10℃ (Handle) | |
| Electrical life | 2,000 Cycles |
| Mechanical life | 4,000 Cycles |
| Contact position indicator | green OFF/red ON |
| Protection degree | IP20 |
| Ambient temperature | -25℃~+40℃ |
| Storage temperature | -30℃~+70℃ |
| Terminal connection type | Cable/ Pin-type/ Fork-type busbar |
| Max. terminal size for cable | 16mm² flexible/25mm² rigid |
| Max. tightening torque | 2.5N.m |
| Installation | Mounting on 35mm DIN rail |
| Incoming method | Bi-directional |



