| Brand | Vziman |
| Model NO. | D165T LV Moulded Case Pole Mounted Breaker Digital Trip Unit |
| Rated voltage | 440V |
| Rated normal current | 265A |
| Series | D165T |
D165T circuit break Product Description
The D165T circuit break is a professional LV Pole-mounted circuit break with a moulded-case structure, specially engineered for the protection of distribution transformers on low-voltage overhead lines. Rated at 165A and 440V, the D165T circuit break features a 4-pole design, providing reliable and all-round protection against overloads, short-circuits and phase imbalances for transformers, perfectly matching the operational protection needs of low-voltage overhead power distribution systems. Equipped with a high-precision digital trip unit, the D165T circuit break can be flexibly and accurately set to safeguard 50kVA to 160kVA transformers, while its integrated air-arc extinction technology and weather-resistant fiberglass shell with IP31 rating make the LV Pole-mounted circuit break an ideal protection solution for a variety of outdoor low-voltage power distribution scenarios.
D165T circuit break Product Features
D165T circuit break Specification
Working Ambient
Note: No fire, no explosion hazards, no chemical c.rrosion and recurrent severe vibration.
D165T circuit break Technical Parameters
| Circuit Breakers | ||
| D165T | D265T | |
| Reference strandard | NH63-S-11 | NH63-S-11 |
| Voltage rating | 440V | 440V |
| Current rating | 165A | 265A |
| Cutout power | 4000A | 6400A |
| Closing power | 6800A | 11700A |
| Number of poles | 4 | 4 |
| Number of outputs | 1 outputs | 2 outputs |
| Cable sections | 25/70mm*2 | 50/150mm*2 |
| Breakdown voltage pulse/earth at 50Hz between poles | 20KV 10KV 4KV |
20KV 10KV 4KV |
| Control system | Manual | Manual |
| Installation | on post | on post |
D165T circuit break Application Scenario
Low-voltage Overhead Power Distribution for Rural Residential Areas
D165T circuit break Product Photos

The D165T circuit break offers all-round reliable protection against overloads, short-circuits and phase imbalances for distribution transformers, solving the common fault problems of low-voltage overhead line transformers. Equipped with a high-precision digital trip unit, the D165T circuit break can be flexibly set according to different transformer capacities, realizing precise fault response and protection. As a professional LV Pole-mounted circuit break, it can quickly cut off fault circuits to avoid transformer damage, ensuring the stable operation of low-voltage power distribution systems.