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CQB7R-125 Miniature Circuit Breaker Reclosing
1 Application
CQB7R-125 Automatic recloser circuit breaker contains super-miniature intelligent electronics with microprocessor can automatically control the opening or closing of circuit breaker by detecting the control signal of electric meter. The automatic control of arrears closing and paying closing can be realized by matching with pre-paid electric meter。
2 Type designation
3 Technical data
| Specifications | |
|
Insulation voltage |
500V |
|
Rated impulse withstand voltage Uimp |
6000V |
|
Rated current(A) |
40A、50A、63A、80A、100A、125A |
|
Rated frequency |
50Hz / 60Hz |
|
Number of poles |
1P+N、2P、3P、3P+N、4P |
|
Rated breaking capacity lcn(A) |
General 6kA, Higher 10kA |
|
Short-circuit capacity Ics(A) |
General 6kA, Higher 7 .5kA |
|
Mechanical life(cycles) |
20000 |
|
Electrical life(cycles) |
6000 |
|
Operating range |
(60 ％一 120 %) Un |
|
Control signal voltage |
AC220V 50Hz |
|
Power Delay Time |
t ≥4s(State Grid) 7≤t ≤ 8(Southern grid) |
|
Automatic closing time |
t ≤ 3s |
|
Cross Section Area of Signal Connecting Wire |
0 . 3mm² |
|
Signal Connection Wire Length |
300mm (Customizable on demand） |
|
Tripping characteristics |
B、C 、D |
|
Grid distance |
45mm |
|
Standard |
IEC60898-1、GB10963.1 |
|
Compliant certification |
CCC |
4 Nominal operation conditions
1 Ambient operating temp. range：-5℃~40℃；≤90%/20℃；≤50%/40℃
2 Operating altitude： ≤2000m
3 Pollution degree： 3
4 Overvoltage category： "Ⅱ"、"Ⅲ"
5 Mounting type：Din rail embedded(TH35-7.5).
5 Dimensions （unit :mm）
