Product Overview
The DNH12-125 Fuse Switch Disconnector is designed for low-voltage power distribution systems requiring reliable isolation, switching, and short-circuit protection in industrial electrical applications.
Suitable for AC 400V and AC 690V systems with rated currents up to 125A, the switch is widely used in control cabinets, switchgear systems, busbar systems, and industrial distribution infrastructure.
By integrating fuse protection and isolation functionality into a compact structure, DNH12-125 helps simplify electrical system architecture while improving operational safety and maintenance convenience.
The product is designed for high short-circuit current environments and can be used as:
- Main Power Switch
- Isolation Switch
- Emergency Switch
- Circuit Protection Switch
It is commonly applied in modern industrial power distribution systems where reliable disconnection and fuse protection are essential.
Key Features
1. Reliable Fuse Protection and Isolation
DNH12-125 combines switch isolation and fuse protection into a single compact unit, helping improve system protection capability while reducing installation space requirements.
The integrated design supports safer operation in high short-circuit current environments and helps improve protection coordination inside low-voltage switchgear systems.
2. Designed for Modern Busbar Systems
The switch adopts a busbar mounting structure suitable for modular busbar systems and standardized electrical cabinet assembly.
This design helps simplify installation and improve cabinet wiring organization inside industrial control panels and power distribution cabinets.
3. Suitable for High Short-Circuit Applications
With rated short-circuit current capability up to 120kA, DNH12-125 is suitable for demanding industrial electrical environments where reliable circuit isolation and protection are critical.
Applications include:
- Industrial Automation
- Motor Protection Circuits
- Power Distribution Cabinets
- MCC Panels
- Data Centers
- Renewable Energy Systems
- Industrial Control Systems
Working Conditions
Ambient Temperature:
- Operating: -20°C to +40°C
- Storage: -50°C to +85°C
Humidity:
Relative humidity shall not exceed 50% at +40°C. Higher humidity is permitted at lower temperatures.
Installation Environment:
The switch should be installed in locations without significant vibration, impact, rain, snow exposure, explosive media, corrosive gas, or conductive dust.
Installation Altitude:
- Standard installation altitude: ≤ 4000m
- Derating required above 4000m
Why Choose DNH12-125?
Modern power distribution systems require more than simple switching devices.
As industrial electrical systems continue moving toward higher reliability and modular busbar system architecture, protection devices must support safer operation, efficient installation, and stable long-term performance.
DNH12-125 provides a compact fuse switch disconnector solution designed for modern industrial electrical infrastructure, helping engineers build safer and more maintainable low-voltage power distribution systems.
