CQB91LE-40 6kA Residual Current Operated Circuit Breaker with Over-current Protection (Electronic)
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CQB91LE-40 residual current operated circuit breaker is suitable for AC 50Hz, rated voltage single pole two lines 230V, rated current to 40A line. When the person is electric shocked or the leakage current of the power grid exceeds the specified value, the residual current operated circuit breaker can quickly cut off the faulty power supply in a very short time to protect the safety of the human body and the electrical equipment. The residual current operated circuit breaker has overload and short circuit protection functions, which can be used to protect the line or motor from overload and short circuit, and can also be used as an infrequent conversion start of the line under normal conditions.
1 Application
CQB91LE-40 residual current operated circuit breaker is suitable for AC 50Hz, rated voltage single pole two lines 230V, rated current to 40A line. When the person is electric shocked or the leakage current of the power grid exceeds the specified value, the residual current operated circuit breaker can quickly cut off the faulty power supply in a very short time to protect the safety of the human body and the electrical equipment. The residual current operated circuit breaker has overload and short circuit protection functions, which can be used to protect the line or motor from overload and short circuit, and can also be used as an infrequent conversion start of the line under normal conditions.
The product complies with GB/T16917.1 and IEC61009-1 standards.
2 Type designation
4 Technical data
Specifications | |
Rated voltage(V) | AC230V |
Rated current(A) | 6A，10A，16A，20A，25A，32A，40A |
Leakage characteristics | A, Ac |
Rated tripping current lrn | 10mA，30mA，100mA |
Pole | 1P+N |
Rated breaking capacity lcs(A) | B、C：4.5/6kA |
Tripping time | 0.1s |
Rated residual making& breaking capacity | 500A |
Tripping Curves | B、C |
Mechanical & Electrical life | Mechanical：≥6000；Electrical：≥4000 |
Connecting wire (mm2) | 2mm²：6A~16、2.5mm²：20~25、4mm²：32~40 |
Pollution degree | 2 |
Protection class | IP20 |
Overvoltage category | Ⅱ、Ⅲ |
Table 2 Tripping time
Type | ln (A) | lrn (mA) | Operating time:（s） | ||
lrn | 2lrn | 5lrn | |||
General type | Any value | Any value | 0.1 | 0.05 | 0.04 |
Table 3 Tripping characteristics （Reference temperature 30℃）
Item | Type | Test current | Status | Time limit for tripping or non-tripping | Expected result | Remarks |
a | B、C、 | 1.13ln | Cold | t≤1h | Non-tripping | Current smoothly rises to specified value within 5s |
b | B、C、 | 1.45ln | Following item a test | t≤1h | Tripping | |
c | B、C、 | 2.55ln | Cold | 1s＜t＜60s(ln≤32A) 1s＜t＜120s(ln＞32A) | Tripping | |
d | B C | 3ln 5ln | Cold | t≤0.1s | Non-tripping | Switch on the power supply by closing the auxiliary switch |
e | B C | 5ln 10ln | Cold | t≤0.1s | Tripping | Switch on the power supply by closing the auxiliary switch |
Note: The term "cold " means that the test is carried out at a reference calibration temperature without load before the test.
5 Conductor requirements and cross-sectional area
Nominal cross-sectional area（mm2） | Rated current （A） |
1 | In≤6 |
1.5 | <p style=margin:0cm;margin-bottom:.0001p |
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