DNH9 Fuse Disconnector Switch 250A GRL Supplier

DNH9 Fuse Disconnector Switch Features

1、Versatile Functionality: Suitable for distribution circuits, motor circuits, and emergency circuit protection, ensuring reliable performance under high short-circuit currents.

2、Compliance with Standards: Fully meets GB/T 14048.3 and IEC/EN60947-3 requirements, offering confidence in quality and performance.

3、Robust Construction: Designed for high durability with an electrical lifespan of up to 200 cycles and support for up to 100kA short-circuit currents.

4、Wide Operating Range: Rated voltage up to 1000V DC and 690V AC, with support for ambient temperatures from -5°C to +40°C.

5、Compact Design: Compact and ergonomic for seamless integration into electrical systems, with flexible installation options.

Operating Conditions

• Ambient Temperature: -25°C to +55°C; capacity reduction may be required for temperatures beyond this range.
• Humidity: Maximum relative humidity of 50% at 40°C, up to 90% at 20°C for lower temperatures.
• Altitude: Operates reliably at altitudes ≤2000m.
• Environmental Requirements: Free from explosive or corrosive gases, significant vibrations, or exposure to rain or snow.
• Pollution Level: Rated for levels III and IV, ensuring resilience in harsh conditions.
• Installation Stress: External cables and busbars should be supported independently to avoid additional stress on the switch.

Application Scenarios

The DNH9 Fuse Switch Disconnector is ideal for:

• Industrial motor circuits require robust circuit protection.
• Distribution networks with high fault current potential.
• Emergency circuit isolation in power systems.
• High-performance AC and DC protection in demanding environments.

Precautions

• Ensure proper alignment during installation to prevent mechanical stress.
• For use in extreme environments, consult with the manufacturer for appropriate configurations.
• Periodically inspect the fuse core and terminals to maintain optimal performance.