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CQB3LE-63 Series Electronic Leakage Miniature Circuit Breaker
CQB3LE-63 series residual current operated circuit breakers are suitable for circuits with AC 50Hz, rated voltage up to 230/400v, and rated current up to 63A. When a person is electrocuted or the leakage current of the power grid exceeds the specified value, the residual current operated circuit breaker can automatically cut off the power supply in a short time to ensure personal safety and prevent accidents caused by leakage current of the equipment. The residual current operated circuit breaker also has overload and short circuit protection functions, which can be used to protect the line from overload and short circuit, and can also be used for infrequent line conversion under normal circumstances. It is suitable for various places such as industry, commerce, high-rise and residential buildings.
Overview and applications
1.Wide-domain adaptation capability
2.Multi-scenario compatibility
3.Leakage, overload/short circuit protection
4.Protect people against indirect contacts and additional protection against direct contacts.
5.Protect installations against fire hazard due to insulation faults.
6.Control electric circuits
Suitable for industrial, commercial, high-rise and civil residences circuit protection.
Technical data
| Specifications | |
| Rated voltage(V) | 230V~ (2P、1P+N) /400V~ (3P、4P、3P+N) |
| Rated current(A) | 6、10、16、20、25、32、40、50、63 |
| Poles | 2P、3P、4P、1P+N、3P+N |
| Rated breaking capacity Icn=lcs(A) | 6000A |
| Rated sensitivity(mA) | 30、50、100、300 |
| Rated non-operating current(mA) | 0.5l△n |
| Rated residual making and breaking capacity | 2000A |
| Tripping time | ≤0.1s |
| Mechanical & Electrical life | 4000 |
| Tripping curves | B、C、D |
| Protection degree | 2 |
| Protection class | Ip20 |
| Overvoltage category | III |
| Standards | IEC61009-1, GB/T16917.1 |
| Compliant certification | CCC |
Table1 Tripping characteristics (Reference temp)
| Item | Ratedcurrent(A) | Initial Status | Test current In(A) | Time limit for tripping or non-tripping | Expected result | Remarks |
| Delay | ≤63 | Cold | 1.13ln | ≤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.
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)
| Poles | L |
| 1P+N | 53.4 |
| 2P | 71.2 |
| 3P | 102.4 |
| 3P+N | 115.8 |
| 4P | 133.6 |
Order Specifications
1.When ordering circuit breakers, the following points should be specified:
A) Product models, such as CQB3LE-63;
B) Poles of circuit breakers, such as 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 as 100pcs
2.Purchase order template
CQB3LE-63 2P C/16A 100pcs
