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NB1-63H Miniature Circuit Breaker

1.1 Function

protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.

NB1-63H circuit-breakers are used in domestic installation, as well as in commercial and industry electrical distribution systems.

1.2 Selection

Technical data of the network at the point considered:short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.

Tripping curves:

B curve (3-5In) 

protection for people and big length cables in TN and IT  systems. 

      C curve (5-10In)

protection for resistive and inductive loads with low inrushcurrent.

      D curve(10-14In)

protection for circuits which supply loads with high inrush current at the circuit closing 

(LV/LV transformers, breakdown lamps).


1.1 Function

protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.

NB1-63H circuit-breakers are used in domestic installation, as well as in commercial and industry electrical distribution systems.

1.2 Selection

Technical data of the network at the point considered:short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.

Tripping curves:

B curve (3-5In) 

protection for people and big length cables in TN and IT  systems. 

      C curve (5-10In)

protection for resistive and inductive loads with low inrushcurrent.

      D curve(10-14In)

protection for circuits which supply loads with high inrush current at the circuit closing 

(LV/LV transformers, breakdown lamps).


NB1-63H2_Datasheet.pdf559.87 KB
NB1-63H-Catalog-02.pdf169.25 KB
NB1-63H-Catalog-01.pdf123.84 KB
NB1-63,-63H_UL.pdf243.63 KB
NB1-63H_CE.pdf257.99 KB
NB1-63H2_CE.pdf88.74 KB
NB1-63H_CE(60947-2).pdf452.05 KB
NB1-63(H)_CE.pdf928.98 KB
NB1-63H-2P_2D(V1).dwg277.19 KB
NB1-63H-1P_3D(V1).igs27.38 MB
NB1-63H-2P_3D(V1).igs27.04 MB
NB1-63H-1P_2D(V1).dwg1.06 MB
NB1-63H-4P_3D(V1).igs51.91 MB
NB1-63H-4P_2D(V1).dwg297.57 KB
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