CQB2-125 10kA Miniature Circuit Breaker
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Single phase and three phase applications ·High breaking capacity up to 10KA ·Overload protection ·Short circuit protection ·Positive isolation Suitable for industrial, commercial, high-rise and civil residences circuit protection.
1 Application
·Single phase and three phase applications
·High breaking capacity up to 10KA
·Overload protection
·Short circuit protection
·Positive isolation
Suitable for industrial, commercial, high-rise and civil residences circuit protection.
2 Type designation
3 Technical data
| Specifications | |
Rated voltage(V) | AC230V、AC400V |
Nominal current (A) | 63A、80A、100A、125A |
Number of poles | 1P 、2P 、3P 、4P |
| Tripping curves | C、D |
Rated short-circuit breaking capacity lcu(A) | 10000A |
Rated service Short-circuit breaking capacity Ics(A) | 7500A |
Rated impulse withstand voltage Uimp(V) | 4000V |
Mechanical life(cycles) | ≥8000 |
Electrical life(cycles) | ≥1500 |
| Tripping characteristics | table 2 |
Protection degree | IP20 |
Standards | IEC60947-2、GB/T14048.2 |
Compliant certification | CCC |
Table2 Tripping characteristics（Reference temp.30℃）
| Item | Curve | Test current ln(A) | Initial status | Time limit for tripping or non-tripping | Expected result | Remark |
| a | C、D | 1.05ln | Cold | 1h（ln≤63A） 2h（ln＞63A） | Non-tripping | Current smoothly rises to specified value within 5s |
| b | C、D | 1.3ln | Following Item a test | 1h（ln≤63A） 2h（ln＞63A） | Tripping | |
| c | C、D | 2ln | Cold | 1s＜t＜300s | Tripping | |
| d | C D | 8ln×80% 12ln×80% | Cold | t≤0.2s | Non-tripping | Switch on the power supply by closing the auxiliary switch |
| e | C D | 8ln×120% 12ln×120% | Cold | t＜0.1s | Tripping | Switch on the power supply by closing the auxiliary switch |
Note: The terminology “Cold ” means that the test is performed at the base calibration temperature with no load prior to the test.
4 Order Specifications
5 cross-sectional area
| Rated current Ie Copper cross-sectional area (mm2) | |
| 50A<in≤63a< td="" style="box-sizing: border-box"> | 16 |
| 63A<in≤80a< td="" style="box-sizing: border-box"> | 25 |
| 80A<in≤100a< td="" style="box-sizing: border-box"> | 35 |
| 100A<in≤125a< td="" style="box-sizing: border-box"> | 50 |
6 Order Specifications
When ordering circuit breakers, the following points should be specified:
A) Product models, such as CQB2-125;
B) Poles of circuit breakers, such as 1P, 2P, 3P, 4P;
C) Types of instantaneous tripping, such as type C and D;
D) Rated current of circuit breakers, such as 63A, 80A, 100A, 125A;
E) Order quantity, e.g. 100 pcs
Purchase order template
CQB2-125 2P C/100A 100pcs
7 Dimensions（unit :mm）
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