The NM7 series plastic case circuit breaker is a user-friendly product with a wide range of applications. It inherits the structural characteristics and design style of the NM1 series products. This series of circuit breakers adopts a plastic case, with a rated working current range of 10A to 800A. It can be installed vertically or horizontally and has isolation function. It complies with GB 14048.2 and IEC 60947-2 standards.
This manual provides detailed information on the NM7 series moulded case circuit breakers, including their rated current range, voltage, breaking capacity and mechanical dimensions. It also describes the environmental limits for temperature, humidity and altitude, as well as the required accessories and mounting options.
The document includes tables of electrical parameters, wiring diagrams, and packaging contents, helping installers and technicians select the correct model and perform safe installation and maintenance. This manual is written in Chinese.
| Rated current | 10 A – 800 A |
|---|---|
| Rated voltage | 380 V / 400 V / 415 V |
| Short‑circuit breaking capacity (AC) | 25 kA |
| Short‑circuit making capacity (AC) | 12.5 kA |
| Dimensions (L × W × H) | 140 mm × 77 mm × 89 mm |
| Maximum installation altitude | 2000 m |
The breakers are rated for currents from 10 A up to 800 A.
Ambient temperature may be as low as –5 °C and as high as +40 °C, with a 24‑hour average not exceeding +35 °C.
The breakers can interrupt up to 25 kA of short‑circuit current at 380/400/415 V AC.
A typical unit measures 140 mm in length, 77 mm in width and 89 mm in height.