Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
DZ15LE MCCB Molded-Case-Circuit-Breaker 40A-100A
DZ15LE series residual current circuit breakers are neutral-to-earth leakage protection devices. Their tripping function is related to the line voltage. They are mainly suitable for circuits with AC 50Hz, rated voltage 230V/400V and rated current up to 100A, for personal electric shock protection. They can also be used to protect lines and motors against overload and short-circuit, and for infrequent switching of lines and infrequent starting of motors.
This series of products complies with the requirements of GB/T 14048.2 standard.
Technical Parameters
Basic Specifications and Parameters (see Table 1, Table 2)
| Model | Frame Grade Rated Current Inm (A) | Rated Voltage Ue (V) | Frequency (Hz) | Pole Number | Rated Current In (A) | Rated Ultimate Short-circuit Breaking Capacity Icu (kA) | Rated Residual Operating Current I△n (mA) | Rated Residual Non-operating Current I△no (mA) |
|---|---|---|---|---|---|---|---|---|
| DZ15LE-40 | 40 | 230 | 50 | 1P+N | 6, 10, 16, 20, 25, 32, 40 | 3 | 30 | 15 |
| 400 | 3P | 50 | 25 | |||||
| 3P+N | 75 | 40 | ||||||
| 100 | 50 | |||||||
| DZ15LE-100 | 100 | 230 | 50 | 1P+N | 50, 63, 80, 100 | 5 | 30 | 15 |
| 400 | 3P | 50 | 25 | |||||
| 3P+N | 75 | 40 | ||||||
| 100 | 50 |
Maximum Breaking Time of Residual Current Circuit Breaker
| I△n (A) | In (A) | I△n | 2I△n | 5I△n | 10I△n |
|---|---|---|---|---|---|
| Maximum Breaking Time (s) | |||||
| I△n≤0.03 | Any Value | 0.1 | – | 0.04 | – |
| I△n>0.03 | Any Value | 0.1 | 0.05 | – | 0.04 |
Working Condition
Normal Operating and Installation Conditions
1. Altitude: The altitude of the installation site shall not exceed 2000m;
2. Ambient air temperature: The upper limit of ambient air temperature shall not exceed +40℃; the lower limit shall not be lower than -5℃; and the 24-hour average temperature shall not exceed +35℃.
Atmospheric conditions: When the ambient air temperature is +40℃, the relative humidity of the atmosphere shall not exceed 50%. Higher relative humidity is allowed at lower temperatures, e.g., 90% at 20℃. Special measures shall be taken for condensation occasionally formed on the product due to temperature changes.
4. Pollution degree: Class 3.
5. Installation category: Class II.
6. Installation conditions: Install in a place free from impact, rain and snow. The upper terminal shall be connected to the power supply side, and the lower terminal to the load side. The inclination angle between the installation surface and the vertical plane shall not exceed 5°.
7. The external magnetic field near the installation site of the circuit breaker shall not exceed 5 times the geomagnetic field in any direction.
More Parameters
Main Technical Data
1. The mechanical and electrical life of the residual current circuit breaker is 10000 times, including 1500 times of loaded operation and 8500 times of no-load operation.
2. The protection characteristics of the overcurrent release of the residual current circuit breaker comply with the provisions of Table 3 and Table 4. The protection characteristic curves are shown in Figure 1 and Figure 2.
Protection Performance of Overcurrent Release for Residual Current Circuit Breakers Used in Distribution Protection
| Ambient Air Temperature | Test Current/Rated Current | Tripping Time | Initial State | |
|---|---|---|---|---|
| In≤63A | In>63A | |||
| +30±2℃ | 1.05 | >1h | >2h | Start from Cold State |
| 1.30 | ≤1h | ≤2h | Start from Hot State | |
| +30±2℃ | 3.00 | Recoverable Time ≥2s | Start from Cold State | |
| At Any Suitable Temperature | 10.00 | <0.2s Tripping | Start from Cold State | |
| +20±2℃ | 1.05 | >1h | >2h | Start from Cold State |
| 1.30 | ≤1h | ≤2h | Start from Hot State | |
Note: The residual current circuit breaker shall be energized with 3In current until recoverable time, then the test current is reduced to 90% of the rated current, and the residual current circuit breaker shall not trip.
Protection Performance of Overcurrent Release for Residual Current Circuit Breakers Used in Motor Protection
| Ambient Air Temperature | Test Current/Rated Current | Test Time | Initial State |
|---|---|---|---|
| +20±2℃ | 1.05 | No Tripping within 2h | Start from Cold State |
| 1.20 | Tripping within 2h | Start from Hot State | |
| 1.50 | Tripping within <2min | Start from Hot State | |
| 7.20 | 2s < T ≤10s | Start from Cold State | |
| At Any Suitable Temperature | 12.00 | Tripping within <0.2s | Start from Cold State |
| -5±2℃ | 1.05 | No Tripping within 2h | Start from Cold State |
| 1.30 | Tripping within 2h | Start from Hot State | |
| +40±2℃ | 1.00 | No Tripping within 2h | Start from Cold State |
| 1.20 | Tripping within 2h | Start from Hot State |
Outline dimension & Install Dimension
The outline dimensions and installation dimensions of the residual current circuit breaker shall comply with the requirements of Figure 4, Table 5 and Table 6.
Outline Dimensions (mm)
| Product Model | Pole Number | A | B | C | D |
|---|---|---|---|---|---|
| DZ15LE-40 | 1P+N | 57 | 212 | 88 | 73.5 |
| 3P | 80 | 221 | 88 | 73.5 | |
| 3P+N | 103 | 221 | 88 | 73.5 | |
| DZ15LE-100 | 1P+N | 70 | 232 | 92 | 80 |
| 3P | 95 | 250 | 92 | 80 | |
| 3P+N | 126 | 250 | 92 | 80 |
Installation Dimensions (mm)
| Product Model | Pole Number | a | b | n-Φd |
|---|---|---|---|---|
| DZ15LE-40 | 1P+N | / | 180 | 2-Φ5 |
| 3P | 25 | 180 | 4-Φ5 | |
| 3P+N | 50 | 180 | 4-Φ5 | |
| DZ15LE-100 | 1P+N | / | 188 | 2-Φ6 |
| 3P | 30 | 210 | 4-Φ7 | |
| 3P+N | 60 | 210 | 4-Φ7 |
Use and Maintenance
1. The leakage, overload and short-circuit protection characteristics of the circuit breaker are adjusted by the manufacturer at the factory, and shall not be adjusted arbitrarily during use to avoid affecting performance.
2. The function of the test button: after the circuit breaker is newly installed or operated for a certain period of time, press the test button under the condition of closing and energizing. If the circuit breaker can trip, it means the circuit breaker is working normally and can be put into use; if the circuit breaker cannot trip, it means the circuit breaker is faulty and needs to be inspected and repaired.
3. If the circuit breaker trips due to faults (leakage, overload or short-circuit) in the protected circuit, the operating handle will be in the tripped position (middle position). After identifying the cause and eliminating the fault, first pull the operating handle down to the “open” position to make the operating mechanism “re-engage”, then the closing operation can be performed.
4. After the circuit breaker is opened due to short-circuit, the contacts shall be inspected. If the main contacts are severely burnt or pitted, maintenance or replacement shall be carried out.
5. The N terminal of the three-pole four-wire residual current circuit breaker must be connected to the neutral wire to ensure the normal operation of the electronic circuit.
Ordering Information
1. Name and model of the circuit breaker;
2. Rated current of the overcurrent release of the circuit breaker (A);
3. Rated residual operating current of the circuit breaker (mA);
4. Quantity.
Example: Order 80 pieces of DZ15LE-40 residual current circuit breakers, with 40A rated current of overcurrent release, 50mA rated residual operating current, for distribution use, three-pole four-wire. It can be written as: DZ15LE-40/3N901, 40A, 50mA, 80 pieces.