Overload protection, short circuit protection, positive isolation
Note: NB1-63 is changed to NXB-63 due to product coding. The products remain the same.

Rated current: 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;
Rated voltage: 220V~/230V~/240V ~ (1P, 1P+N，2P), 380V~/400V~/415V ~ (2 ~ 4P, 3P+N);
Frequency: 50/60Hz;
Thermal magnetic release: B, C, D;
Number of poles: 1P, 1P+N(N on right), 2P, 3P, 3P+N(N on right), 4P;
Mechanical life: 20000 cycles;
Electrical life: 10000 cycles;
Rated short-circuit breaking capacity(Icn): 6000A,10000A(2P, 220V/230V/240V);
Short-circuit breaking capacity (Ics): 6000A, 7500A(2P, 220V/230V/240V);
Rated insulation voltage Ui: 500V
Rated impulse withstand voltage (Uimp): 4kV;