HKB9F-100+ZF fee-controlled energy meter external circuit breaker uses a small circuit breaker with short-circuit overload protection as the main switch, and is equipped with an ultra-small intelligent electric operator with a microprocessor. It automatically controls the opening or closing of the circuit breaker by detecting the electric and air control signal. It is used in conjunction with the prepaid electricity meter to realize the automatic control of opening for arrears and closing for payment.
It complies with the "Technical Specifications for External Circuit Breakers of Energy Meters" of the State Grid Corporation of China and the China Southern Power Grid and "GB/T10963.1 Overcurrent Protection Circuit Breakers for Household and Similar Places Part 1: Circuit Breakers for AC".