1000-1600A DNH40 Series Disconnector Switch
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Model
| Brand | Switchgear parts |
| Model NO. | 1000-1600A DNH40 Series Disconnector Switch |
| Rated voltage | AC 1000V |
| Rated normal current | 1600A |
| Rated frequency | 50Hz |
| Series | DNH40 |
The DNH40 series features a modular structure that can be assembled according to customer requirements.
The switch housing is made of glass fiber-reinforced unsaturated polyester resin, offering excellent flame-retardant properties, dielectric performance, anti-carbonization, and impact resistance.
Equipped with a double spring energy storage mechanism, the switch allows instantaneous release of th spring during operation, ensuring quick connection and disconnection. This mechanism is independent of the operating handle speed, significantly enhancing the switching capabilities.
The position of the moving contact is visible through a window, providing a higher level of safety.
The switch features a clear ON/OFF indicator. When in the “O” position, the handle can be locked to prevent accidental operation.
1、Machinery and Equipment
Suitable for machinery that requires infrequent connection and disconnection of circuits. The reliable isolation ensures safety during maintenance and operation.
2、Distribution Systems
Used in electrical distribution systems to isolate different sections for maintenance or in case of a fault. Ensures the safety of personnel and equipment.
3、Switchgear and Control Panels
Integral to switchgear and control panels for safe isolation of circuits. Ensures that operators can safely work on electrical panels without the risk of electric shock.
4、Motor Control Centers
Provides isolation for motor control circuits, allowing safe maintenance and operation. Essential in industrial environments where motor control is critical.
5、Photovoltaic Systems
Used in photovoltaic systems to isolate parts of the system for maintenance, ensuring safety and reliability in renewable energy setups.
| Model | DNH40 - 1000 | DNH40 - 1250 | DNH40 - 1600 | |
| Conventional thermal current and rated operational current | A | 1000 | 1250 | 1600 |
| 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 | 1000 | 1250 | 1600 |
| Rated operational current (AC - 22A) | 690V A | 1000 | 1250 | 1600 |
| Rated operational current (AC - 23A) | 690V A | 1000 | 1250 | 1250 |
| Power loss per pole (at rated operational current) | W | 19 | 29 | 48 |
| Rated short - time withstand current | ≤690V1s kA | 50 | 50 | 48 |
Normal Operating Conditions
| Ambient Temperature | Range: -5°C to +40°C, with a 24-hour average temperature not exceeding +35°C |
| Humidity | At maximum temperature (+40°C), relative humidity ≤ 50%. At lower temperatures (e.g., +20°C), 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°C or below -5°C, the user must consult the manufacturer. |
