Scope of Application
The QKB3E-125 Miniature Circuit Breaker (dedicated for meter distribution boxes) features functions such as meter control and feedback signals. It automatically disconnects upon non-payment with anti-reclosing protection and automatically re-closes to restore power upon payment. It is suitable for circuits with AC rated operational voltages of 230V/400V, 50Hz/60Hz, and rated currents from 40A to 125A, used to remotely open and close lines or user connections for control purposes. It also provides overload and short-circuit protection for the lines and can serve for infrequent switching operations.
It is widely used in conjunction with manual IC card prepaid energy meters. It can also be remotely controlled via internet or IoT signals to achieve shunt trip and automatic reclosing functions. It represents a leading-edge, high-quality product for low-voltage electricity consumption and billing management.
This product complies with the GB/T 10963.1 standard and achieves international advanced levels.
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): 10000/7500A.
- Operating Performance:
- Electrical Endurance: 4000 operations, cos φ: 0.85~0.9.
- Mechanical Endurance: 10000 operations.