1.Product Overview:

NDB2F-125 meter external circuit breaker is specially developes to solve the problem of the prepaid meter external circuit breaker failing to be closed automatically. The product adopts a miniature circuit breaker with the short circuit overload protection as the main switch, which is equipped with an ultra-small intelligent electric operating mechanism featuring a microprocessor. It controls the on/off state of the circuit breaker automatically through detection of the control signal, providing automatic control, on/off state feedback and other functions of the circuit breaker.

2.Specification:

• Shell frame level: 125A
• Tripping characteristics: Type C
• Rated current: 40A, 50A, 63A, 80A, 100A, 125A
• Number of Poles: 2P, 4P
• M: Electric-operation handle sealed None: Electric-operation handle Exposed
• Wiring mode: 2P single phase; 4P three-phase four-wire system
• Rated operational voltage(V): AC 230/AC 240; AC400/AC415
• Rated current(A): 40A, 50A, 63A, 80A, 100A, 125A
• Control loop power voltage(V): 220VAC/50HZ
• Rated insulation voltage(V): 500
• Power-on delay t: 8s≤t≤7s
• Remote automatic closing time: ≥3s
• Remote automatic opening time: ≥2s
• Mechanical life(times): 10000
• Electronical life(times): 6000
• Rated impulse withstand voltage: 6KV
• Pollution level: 2
• Degree protection: IP20
• Working environment(℃): -40~+70

3.Working Condition:

• Ambient temperature:-40℃~+70℃
• Relative air humidity:≥95%
• Altitude:≥2000m
• The product is applicable in an environment with pollution class ll
• Working site without obvious vibration and shock