Function and use
DZ15LE series residual current-operated circuit breaker (hereinafter referred to as residual current-operated circuit breaker) is suitable for AC 50Hz, rated voltage 220V or 380V, and rated current up to 100A circuits for residual current protection. It can also be used to prevent equipment insulation damage. It can prevent fire hazards caused by grounding accident currents, and can be used to protect lines from overload and short circuit, and can also be used for infrequent line switching. The product adds a phase failure protection function (optional). When any phase of the three-phase power supply fails abnormally, the product can quickly cut off the circuit within 0.2s to protect electrical equipment.
Detailed parameters
Parameter table 1
| Parameter classification | Parameter item | Parameter value |
|---|
| 4.1 The basic specifications and parameters of the residual current operated circuit breaker are shown in Table 1 | Model | DZ15LE-40 |
| Rated voltage Ue(V) | 220, 380 |
| Rated insulation voltage Ui(V) | 690 |
| Frame rating rated current (A) | 40 |
| Number of poles | 2, 3, 4 |
| Rated current (A) | 20, 32, 40; 63, 100 |
| Rated ultimate short-circuit breaking capacity Icu kA | 30, 50, 75, 100; 30, 50, 75, 100, 300 |
| Rated residual non-operating current I△no(mA) | 15, 25, 40, 50; 15, 25, 40, 50, 150 |
| Arc distance mm | ≤50, ≤70 |
| | DZ15LE-100 |
Parameter table 2
| Parameter classification | Parameter item | Parameter value |
|---|
| Model number | DZ15LE-40 |
| Instantaneous operating current setting value of distribution circuit breaker II(A) and tolerance | 10In,±20% |
| Motor protection circuit breaker instantaneous operating current setting value II(A) and tolerance | 12In,±20% |
| Single-pole short-circuit protection current operating setting value II(A) | For power distribution: 12In
For motor protection: 14In |
| Tripping time (s) | <0.2 |
| Model number | DZ15LE-100 |
| Instantaneous operating current setting value of distribution circuit breaker II (A) And tolerance | 10In, ±20% |
| Motor protection circuit breaker instantaneous operating current setting value II (A) and tolerance | 12In, ±20% |
| Single-pole short-circuit protection current operating setting value II(A) | For power distribution: 12In
For motor protection: 14In |
| Tripping time (s) | <0.2 |
| Phase failure protection function | | In a three-phase power supply system, when a phase failure occurs in one phase, the tripper can effectively cut off the circuit and protect the three-phase equipment. The action time of the phase failure protection characteristic is ≤ 0.2s.
Note: Phase failure protection does not apply to 2-pole circuit breakers. |
