| Brand | Xinyouxiang |
| Model NO. | 160-250A DNH40 Series Disconnector Switch |
| Rated voltage | AC 1000V |
| Rated normal current | 250A |
| Rated frequency | 50Hz |
| Series | DNH40 |
The DNH40 series disconnector switch (hereinafter referred to as "the switch") is suitable for industrial power distribution systems with AC 50Hz/60Hz and rated insulation voltage up to 1000V. It is designed for infrequent circuit connection/disconnection and electrical isolation, widely used in construction, power, petroleum, chemical, and automation systems. Suitable for various types of small and medium-sized low-voltage distribution cabinets, including conventional fixed, withdrawable, and outdoor dedicated cabinets. The following are specific adaptation information: GGD low-voltage fixed switchgear, GCK withdrawable low-voltage switchgear, XL-21 power cabinet, JP rural network dedicated comprehensive distribution box, MNS miniaturized withdrawable switchgear, etc
| DNH40 - 160 | DNH40 - 200 | DNH40 - 250 | ||
|---|---|---|---|---|
| Model | DNH40 - 160 | DNH40 - 200 | DNH40 - 250 | |
| Conventional thermal current and rated operational current | A | 160 | 200 | 250 |
| Rated operational voltage (AC - 20/DC - 20) | V | 1000 | 1000 | 1000 |
| Rated insulation voltage (Installation category Ⅳ) | Ui V | 1000 | 1000 | 1000 |
| Dielectric strength | 50Hz 1min kV | 10 | 10 | 10 |
| Rated impulse withstand voltage | Uimp kV | 12 | 12 | 12 |
| Rated operational current (AC - 21A) | 690V A | 160 | 200 | 250 |
| Rated operational current (AC - 22A) | 690V A | 160 | 200 | 250 |
| Rated operational current (AC - 23A) | 690V A | 160 | 200 | 250 |
| Power loss per pole (at rated operational current) | W | 3.2 | 4 | 6.5 |
| Rated short - time withstand current | ≤690V1s kA | 8 | 8 | 8 |
| Rated short - circuit making capacity | ≤ 690V kA | 30 | 30 | 30 |
| Mechanical life | Oper | 20000 | 20000 | 20000 |
| Operating torque (3 - pole) | Nm | 7 | 7 | 7 |
| Terminal screw specification | mm | M8×25 | M8×25 | M8×25 |
| Terminal tightening torque | Locking torque Nm | 15～22 | 15～22 | 15～22 |
| Normal Operating Conditions | ||||
| Ambient Temperature | Range: - 5℃ to + 40℃, with a 24 - hour average temperature not exceeding + 35℃ | |||
| Humidity | At maximum temperature (+ 40℃), relative humidity ≤ 50%. At lower temperatures (e.g., + 20℃), higher humidity (up to 90%) is permissible. Special measures must be taken to address occasional condensation caused by temperature fluctuations. | |||
| Altitude | ≤2000m | |||
| Pollution Degree | Ⅲ | |||
| Installation Category | Ⅳ | |||
| Installation Requirements | The switch must be installed in a location free from significant vibration, mechanical shock, or exposure to rain/snow. The installation site must be free of explosive hazardous substances and corrosive gases/dust that could damage metal or insulation. | |||
| Note: If the switch is intended for use in ambient temperatures exceeding + 40℃ or below - 5℃, the user must consult the manufacturer. |
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