NJS5 Time Relay

1.1 Function protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation. NB1 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). 1.3 Approvals and certificates Detailed information, please refer to Certificates Table on the last page.

Rated current: 63A, 80A, 100A, 125A; Rated voltage: 240V ~ (1P), 415V ~ (2P, 3P, 4P); Frequency: 50Hz; Electromagnetic release type: C, D; Number of poles: 1P, 2P, 3P, 4P; Mechanical life: 20000 cycles; Electrical life: 6000 cycles (In≤100A); 4000 cycles (In＞100A); Rated short-circuit breaking capacity(Icu): 10000A; Short-circuit breaking capacity(Ics): 7500A; Rated impulse withstand voltage(Uimp): 4kV; CATALOG NXB-125 Moulded Case Circuit Breaker PDF

The NB7 series miniature circuit breaker is applicable to the circuit with an alternating  current of 50Hz/60Hz, rated voltage of 240/415V, and rated current up to 63A for overload protection and short circuit protection, and also for not-frequent operational transformation in the circuit under normal condition. This product can be applied to various places such as industrial, commercial, and tall buildings, and residential houses. The product meets the standards of IEC60898-1. NB7 Miniature Circuit Breaker PDF