MCB
010 Low Voltage Brief Catalogue P -
NB8-40J
1. General
1.1 Function Protection of circuits against short-circuit currents, protection of circuits against overload currents, switch, isolation. NB8 -40J 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 inrush current. D curve(10-16In) protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers, breakdown lamps) 1.3 Certificate CE
NB8-63H
NB8 -40J
Miniature Circuit Breaker
2. TECHNICAL DATA
2.Technical features
3.Curve
C curve(5~10In)
D curve(10~16In)
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