KNBL1-32 Residual Current Circuit Breaker with Overcurrent Protection
Inquire NowDescription
The KNBL1-32 Residual Current Circuit Breaker with Overcurrent Protection is a reliable safety device designed to protect electrical lines from leakage, overload, and short-circuit conditions. Operating on AC, A, and S frequencies of 50/60Hz, it is suitable for single-phase voltage systems up to 240V, with a rated current capacity of up to 63A. This circuit breaker offers rapid response, automatically cutting off power within 0.1 seconds in case of electrical shocks or excessive leakage currents, ensuring enhanced safety for users.
Additionally, the KNBL1-32 complies with international standards IEC/EN61009-1 and GB16917.1, making it a trustworthy choice for both residential and commercial applications. Its design also supports infrequent line changeovers under normal conditions, providing both convenience and peace of mind.
Specifications
| Attribute | Details |
|---|---|
| Frame Class | 32A |
| Rated Working Voltage | 240V |
| Rated Frequency | 50/60Hz |
| Rated Working Current | 6, 10, 16, 20, 25, 32A |
| Rated Residual Operating Current | 30mA, 10mA |
| Maximum Operating Time | I△n t ≤ 0.3s, 5I△n t ≤ 0.04s |
| Making and Breaking Current | 4500A |
| Release Type | C |
| Poles | 1P+N |
| Mechanical Life | 8000 |
| Electric Life | 4000 |
Additional Information
The KNBL1-32 circuit breaker features a sequence of tests ensuring its reliability and effectiveness in various operational conditions. Each test evaluates the breaker’s response to different current levels, ensuring it meets safety standards.
| Sequence NO. | Release | Test Current I/In | Start State | Tripping Time | Expected Result |
|---|---|---|---|---|---|
| 1 | C | 1.13In | Cold state | t≤ 1h | Not tripping |
| 2 | C | 1.45In | Start right after the serial NO. 1 test | t＜ 1h | Tripping |
| 3 | C | 2.55In | Cold state | 1s＜t＜60s | Tripping |
| 4 | C | 5In | Cold state | t≤ 0.1s | Not Tripping |
| 5 | C | 10In | Cold state | t＜ 0.1s | Tripping |
