The NHR17 series fuse isolation switch is a new product developed by the company. It is suitable for distribution circuits and motor circuits with high short-circuit currents. It has a rated insulation voltage of 800V and a rated working voltage of up to 690V. The maximum rated working current is 630A. It meets the standards of GB 14048.3 and IEC 60947-3.
The NHR17 series fuse-type isolating switch is a newly developed product designed for high short‑circuit current distribution and motor circuits. It can be used as a power switch, isolating switch, or emergency switch, but is not intended for direct single‑person motor operation. The manual lists applicable standards GB 14048.3 and IEC 60947‑3.
Key technical data such as rated insulation voltage (800 V), working voltage (up to 690 V), current (up to 630 A) and frequency (50 Hz) are provided, along with environmental limits for temperature, altitude, humidity and pollution degree. Physical dimensions, installation sizes, and ordering instructions are also included. This manual is written in Chinese.
| Rated insulation voltage | 800 V |
|---|---|
| Rated working voltage | up to 690 V |
| Rated working current | up to 630 A |
| Rated frequency | 50 Hz |
| Applicable standards | GB 14048.3, IEC 60947‑3 |
| Ambient temperature range | -5 °C to +40 °C |
| Maximum altitude for installation | 2000 m |
| Maximum relative humidity | 50 % (at high temperature) |
| Pollution degree | Level 3 |
| Available rated currents | 32‑630 A (multiple steps) |
The rated insulation voltage is 800 V.
It complies with GB 14048.3 and IEC 60947‑3.
Installation temperature must be between –5 °C and +40 °C, altitude not above 2000 m, relative humidity not exceeding 50 % at high temperature, and pollution degree level 3.
The order must state the type features, voltage level, current level, pole number, operation mode and quantity, e.g., NHR17‑630/31.