The HR3 series fuse isolator switch is suitable for short circuit protection and overload protection in AC 50Hz, 380V distribution systems. It has the function of manual connection and disconnection of load current, and can disconnect the current in case of a short circuit. It complies with GB 14048.3 and IEC 60947-3 standards.
This manual provides the installation guidelines, operating instructions, and safety information for the HR3 series fuse type isolating switches. It covers normal operation, environmental limits, and the various mounting configurations (front, side, and panel).
Technical data such as rated current, voltage, short‑circuit capacity, and mechanical dimensions for each model (e.g., HR3‑100/31, HR3‑200/32) are listed in tables, along with recommended mounting procedures and handling precautions. This manual is written in Chinese.
| Operating Temperature Range | -5 °C to +40 °C |
|---|---|
| Maximum Installation Altitude | 2000 m |
The switches can operate between -5 °C and +40 °C.
Installation is permitted up to 2000 m above sea level.