Scope of Application
The QKB3E Meter-External Circuit Breaker (here in after referred to as the circuit breaker) is primarily designed for AC 50/60Hz circuits with voltages of 230V for 2-pole and 400V for 4-pole configurations, and currents ranging from 40A to 80A. It provides overload protection, short-circuit protection, and serves for remotely controlling the opening and closing of the circuit breaker by an energy meter. It can also be used for infrequent switching of electrical appliances and lighting circuits. The product complies with the GB/T 10963.1 standard.
Technical Parameters
- Rated Operational Voltage: 2-pole: 230V; 4-pole: 400V.
- Rated Insulation Voltage (Ui): 500V.
- Rated Impulse Withstand Voltage (Uimp): 6kV.
- Rated Short-Circuit Breaking Capacity (Icn = Ics): 6000A.
- Operating Performance:
- Electrical Endurance: 4000 operations, cos φ: 0.85-0.9.
- Mechanical Endurance: 10000 operations.