NKB10-63 series of small DC circuit breaker is applicable for the circuit whose rated DC voltage is 250V, rates operating current is 63A to protect from overload and short circuit, as well as non-frequent switching in circuit under normal condition. It is used in DC system applications of telecommunication and photovoltaic system.
This product meets the standard of GB10963.2.
Main Technical Parameters
1. Basic Parameters(see table1 ) Table1
2. Over Voltage Tripping Feature(see table2) Table2
|Rated operating current In(A)||6,10,16,20,25,32,40,50,63|
|Number of poles||1P,2P|
|Rated operating voltage Ue(V)||DC250|
|Rated impulse withstanding voltage Uimp (kV)||6|
|Extreme tripping ability for short circuit Icn(kA)||6|
|Instaneous tripping feature||C|
|Optional accessories||Auxiliary contact, alarming contact|
|Instaneous tripping feature||Trial current||Start state||Rated time||Expected results||Notes|
|C||1.051n||Cold||t≥1h||Non tripping|| |
|C||1.301n||Hot||t≤1h||Tripping||The current shall stably rise to the rated value within 5s|
|C||71n||Cold||t≥0.1s||Non tripping|| |