CQB5-63 4.5kA Miniature Circuit Breaker
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Features ·Up to 63A current rating ·Current limiting design ·Three levels of short-circuit protection ,categorized by B、C and D curves. ·Captive screws cannot be lost ·Contact position indicator(red/green) ·Easy installation on DIN rail
1 Application
Suitable for industrial, commercial, high-rise and civil residences circuit protection.
Features
·Up to 63A current rating
·Current limiting design
·Three levels of short-circuit protection ,categorized by B、C and D curves.
·Captive screws cannot be lost
·Contact position indicator(red/green)
·Easy installation on DIN rail
2. Type designation
3 Technical data
| Specifications | |
| Rated voltage(v) : | 230V/400V(1P)、400V(2P、3P、4P) |
| Rated current(A) : | 6、10、16、20、25、32、40、50、63 |
| Poles : | 1P、2P、3P、4P |
| Rated breaking capacity(A): | 4500 |
| Tripping characteristics: | Table 1 |
| Mechanical life & Electrical life: | 4000 |
| Nominal cross section area S (mm2): | Table 2 |
| Tightening torque (N-m): | 2.5 |
| Pollution Degree: | 2 |
| Protection class: | IP20 |
| Overvoltage category : | Ⅱ |
Table 1: Tripping characteristics (temperature 30℃) :
| Type | Rated current(A) | Initial status | Test current | Tripping time | Expected result | Remarks |
| Delay | ≤63 | Cold | 1.13In | ≤1h | Non-tripping | |
| Delay | ≤63 | Following previous test | 1.45In | ＜1h | tripping | Current smoothly rises to specified value in 5s |
| Delay | ≤32 | Cold | 2.55In | 1＜t＜60s | tripping | |
| Delay | ＞32 | Cold | 2.55In | 1＜t＜120s | tripping | |
| Instantaneous | Any value | Cold | 3、5、10In | ≤0.1s | Non-tripping | B、C、D |
| Instantaneous | Any value | Cold | 5、10、20In | ＜0.1s | tripping | B、C、D |
Note: The term "cold " means that the test is carried out at a reference calibration temperature without load before the test.
Table 2: Nominal cross section area S (mm2)
| Copper cross-section(mm2) | Rated current In (A) |
| 1 | In≤6 |
| 1.5 | 6＜In≤13 |
| 2.5 | 13＜In≤20 |
| 4 | 20＜In≤25 |
| 6 | 25＜In≤32 |
| 10 | 32＜In≤50 |
| 16 | 50＜In≤63 |
4 Order specifications.
When ordering circuit breakers, the following points should be specified:
A) Product models, such as CQB5-63;
B) Poles of circuit breakers, such as 1P、2P、3P、4P；
C) Rated current of circuit breakers, such as 16A、20A、25A；
D) Order quantity, such as 100 pcs
Purchase order template
CQB5-63 2P C/16A 100pcs
5 Dimensions （unit :mm）
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