D165T-D265T LV Pole mounted circuit breaker utilizes vacuum circuit breaker technology and features an arc-extinguishing chamber equipped with metal arc chute.

1. It includes a contact that establishes an electrical connection between the neutral of the transformer and the ground of the substation.Closing circuit breaker, a splatter limits the potential rise of the neutral BT in relation to the ground of the masses for a value greater than 10 kV .
2. It has a Digital trigger blocks ,The digital trigger block provides protection for the 3 transformer calibers on the pole(50kVA, 100kVA and 160kVA), whether conventional transformers (without internal protection) or new transformers with protection(TPC). A selector allows the choice of the protection gauge of the transformer. The micro-controller evaluates in real time the presumed temperature of the transformer from the current on all three phases and the outside ambient temperature. The latter is itself calculated from the probe and a mathematical model as a function also of the 3 phase currents. In case of  intergrationof trigger block in an old generation pole breaker, the load  intergration function, if it exists, will be inhibited.
3. D165T-D265T LV Pole mounted circuit breakerwill be mounted in a fiber reinforced polyester enclosure, Excellent weather resistance .fully comply with the HN 63-S-11 standard .
4. The circuit breaker adapted to large load imbalances and thus guarantee the full exploitation of the installed power even in unbalanced condition box circuit breaker.
5. D165T and D265T, Both 4 poles, 3 of which are protected and Both models operate at 440V rated voltage with differentiated performance:

• D165T: 165A rated current, 4000A breaking capacity, 6800A making capacity, 1 output, supporting 25/70 mm² cables.
• D265T: 265A rated current, 6400A breaking capacity, 11700A making capacity, 2 outputs, supporting 50/150 mm² cables.
• 20kV impulse withstand, 10kV at 50Hz, and 4kV inter-pole insulation.