Scope of Application
The QKB1LE-63 Miniature Residual Current Circuit Breaker is suitable for AC 50Hz or 60Hz circuits with a rated voltage of 400V, a rated insulation voltage of 400V, and rated currents from 6A to 63A. It is used for earth leakage protection. In the event of severe electric shock or when the leakage current exceeds the specified value, the residual current operated circuit breaker can automatically cut off the power supply within an extremely short time to protect personal safety and prevent equipment accidents caused by leakage currents.
The residual current operated circuit breaker also provides overload and short-circuit protection, which can be used to protect lines against overload and short-circuit. Additionally, it can serve for the infrequent switching of lines under normal conditions. This product complies with the GB/T 16917.1 standard.
Technical Parameters
- Rated Operational Voltage: Single-pole two-wire and two-pole: 230V; Three-pole and three-pole four-wire: 400V
- Rated Insulation Voltage (Ui): 400V
- Rated Impulse Withstand Voltage (Uimp): 4kV
- Rated Residual Non-Operating Current (IΔno): 0.5 IΔn A
- Time-Delay Type Limit Non-Driving Time: 0.06s, 0.1s
- Rated Short-Circuit Breaking Capacity (Icn/Ics): 6000A
- Rated Residual Making and Breaking Capacity (IΔm): 2000A
- Operating Performance:
- Electrical Endurance: 20,000 operations, cos φ: 0.85 ~ 0.9
- Mechanical Endurance: 40,000 operations