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CQB3-63 series 50Hz/60Hz AC Miniature Circuit Breaker
Overview and applications
The CQB3-63 series miniature circuit breaker, crafted by CHAC Electric, is designed to fulfill the customization needs of international clients in low - voltage electrical systems. As a professional contract manufacturer with extensive export experience, we excel in ODM/OEM services.
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Our CQB3-63 series highlights advanced technology and strict quality control. Leveraging cutting - edge equipment and stringent quality standards, we guarantee reliable performance. We understand international clients' unique requirements and offer flexible customization from product design to packaging. Our efficient processes and quality systems ensure timely delivery of high - quality products, empowering clients to thrive in the global market.
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1.Wide-frequency compatibility
2.High voltage/current
3.High breaking capacity
4.High Interruption rating capabilities.
5.Overload & short circuit protection
6.Positive isolation
Suitable for industrial, commercial, high-rise and civil residences circuit protection.
Technical data
| Specifications | |
| Insulation voltage | 500V |
| Rated impulse withstand voltage Uimp | 4000V |
| Rated current(A) | 6、10、16、20、25、32、40、50、63 |
| Rated frequency | 50Hz/60Hz |
| Number of poles | 1P、1P+N、2P、3P、3P+N、4P |
| Rated breaking capacity Icn=lcs(A) | 6000A |
| Mechanical & Electrical life | Mechanical≥10000,Electrical≥6000 |
| Tripping curves | B、C、D |
| Grid distance | 45mm |
| Protection class | IP20 |
| Standards | IEC60898-1、GB/T10963.1 |
| Tripping curves | CCC |
Table1 Tripping characteristics (Reference temp.30°C)
| Item | Type | Test current In(A) |
Initial Status | Time limit for tripping or non-tripping |
Expected result | Remarks |
| a | B、C、D | 1.13ln | Cold | t≤1h | Non-tripping | Current smoothly rises to specified value in 5s |
| b | B、C、D | 1.45ln | Following previous test |
1h | Tripping | |
| c | B、C、D | 2.55ln | Cold | 1s<t<60s(In≤32A) 1s<t<120s(In>32A) |
Tripping | |
| d | B | 3ln | Cold | t≤0.1s | Non-tripping | Switch on the power supply by closing the auxiliary switch |
| C | 5In | |||||
| D | 10In | |||||
| e | B | 5In | Cold | t<0.1s | Tripping | Switch on the power supply by closing the auxiliary switch |
| C | 10ln | |||||
| D | 20ln |
Note: The term "cold" means that the test is carried out at a reference calibration temperature without load before the test.
Tripping curves
Conductor requirements and cross section
| 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 |
Dimensions (unit:mm)
Order Specifications
1.When ordering circuit breakers, the following points should be specified:
A) Product models, such as CQB3-63;
B) Poles of circuit breakers, such as 1P、1P+N、2P、3P、3P+N、4P;
C) Types of instantaneous tripping,such astype B/C/D;
D) Rated current of circuit breakers, such as 16A、20A、25A;
E) Order quantity,such as100pcs
2.Purchase order template
CQB3-63 2P C/16A 100pcs
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