1.Purpose and Scope
The HR3 Series Fused Disconnecting Switch is designed for AC 50Hz, 380V systems with rated currents up to 1000A. It provides short-circuit protection and overload protection for cables and conductors. Under normal conditions, it allows infrequent manual switching of load currents and overload currents. During short circuits, the fuse interrupts the current. Not recommended for direct motor switching.
2.Model Specifications
3. Operating and Storage Conditions
3.1 Normal Operating Conditions
Ambient Temperature: -5°C to +40°C (24h average 35°C).
Humidity: 50% at +40°C; 90% at +20°C.
Altitude: 2000m.
Pollution Degree: 3.
3.2 Transport
Temperature Range: -25°C to +55°C (short-term peaks +70°C for 24h).
4. Technical Parameters
4.1 Main Circuit Specifications (Table 1)
4.2 Fuse Compatibility (Table 2)
5. Dimensions and Installation
