D165T D265T Lv Pole Mounted Breaker Digital Trip Unit
- Product Name:
- D165T D265T Lv Pole Mounted Breaker Digital Trip Unit
- Model Number:
- D165T D265T
- Conductor Range:
- 25 – 70mm²
- Brand:
- SMICO
- Standard:
- HN 63-S-11
- Supply Ability:
- 2000
- Voltage:
- 0.44 kV
- Operating Temperature:
- -25 … 50 °C
D165T D265T Lv Pole Mounted Breaker Digital Trip Unit
For the protection and management of MV/LV transformers in rural networks, specialized circuit breakers are essential to handle significant load imbalances. These breakers ensure reliable and uninterrupted power supply even under unbalanced load conditions. The devices, featuring four poles (with three protected), employ air-break technology and arc-extinguishing chambers with metal partitions for effective arc suppression. The D165T–D265T series of low voltage pole mounted circuit breakers is equipped with advanced digital trip units to deliver precise and dependable protection.
Benefits
Compact, user-friendly protection for 50 kVA and 100 kVA transformers, superior to fuse-based solutions.
Closed position: spark gap limits LV neutral potential rise above 10 kV for enhanced safety.
Open position: ensures secure grounding between transformer neutral and earth.
Customizable to your needs — feeders, mounting supports, rod assembly, trip unit type, and load indicator options. Contact us for details.
Product Parameter
| Code | D165T |
| Name | Circuit breaker |
| Low voltage pole mounted circuit breaker D165T with digital trip unit | |
| Standards: | HN 63-S-11 |
| Electrical values | |
| Rated Voltage (Ur): | 0.44 kV |
| Rated current: | 165 A |
| Rated short-circuit breaking capacity: | 4 kA |
| Rated short-circuit making current: | 6.8 kA |
| Rated short-time withstand current (1s): | 4 kA/s |
| Rated power-frequency withstand voltage (50 Hz – 1min): | 10 kV |
| Lightning impulse withstand level of voltage (1.2/50): | 20 kV |
| Features | |
| Degree of protection: | IP31 |
| Number of outputs: | 1 |
| Conductor size: | 25 – 70mm² |
| Temperatures | |
| Operating temperature: | -25 … 50 °C |
| Storage temperature: | -25 … 70 °C |
| Dimensions | |
| Length: | 400 mm |
| Width: | 370 mm |
| Height: | 550 mm |
| Weight: | 17 kg |
