2000-2500A DNH40 Series Disconnector Switch

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 multiple low-voltage distribution cabinets and special scenario cabinets that can carry high currents. The specific adaptation situations are as follows: GGD type low-voltage fixed switchgear, GCK type withdrawable low-voltage switchgear, GCS type withdrawable low-voltage switchgear, MNS type low-voltage withdrawable switchgear, Okken modular low-voltage switchgear, etc

Isolator Switches Feature

1、Modular Design

The DNH40 series features a modular structure that can be assembled according to customer requirements.

2、Durable Construction

The switch housing is made of glass fiber-reinforced unsaturated polyester resin, offering excellent flame-retardant properties, dielectric performance, anti-carbonization, and impact resistance.

3、Efficient Operating Mechanism

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.

4、Rotary Contact Structure

The rotary multi-breakpoint contact structure ensures a safe isolation distance, meeting the reliable isolation requirements.

5、Visual Indicator

The position of the moving contact is visible through a window, providing a higher level of safety.

6、Clear Status Indication

The switch features a clear ON/OFF indicator. When in the “O” position, the handle can be locked to prevent accidental operation.

Isolator Switches Application

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.

Key Technical Parameters

 Normal Operating Conditions