MD7AP is a lightning arrester from M-Systems. Its main features are a discharge current of 10kA (8/20μs), a thickness of only 7mm, and it is suitable for use in small capacity control AC power supplies.
The MD7AP is a compact, high‑capacity lightning arrester designed for low‑capacity AC power sources. It offers a rated discharge current of 10 kA (8/20 µs) and complies with IEC 61643‑21 and EN 61000 standards.
This manual contains the device’s technical specifications, environmental limits, mounting and grounding procedures, compliance data, and safety notes to ensure proper installation and reliable operation. This manual is written in Chinese.
| Rated discharge current | 10 kA (8/20 µs) |
|---|---|
| Rated voltage (MD7AP‑100) | 140 V AC |
| Rated voltage (MD7AP‑200) | 275 V AC |
| Ground voltage rating (MD7AP‑100) | 275 V AC |
| Ground voltage rating (MD7AP‑200) | 850 V AC |
| Surge voltage rating | 6 kV (1.2/50 µs) |
| Maximum operating current | 3 A |
| Contact resistance | ≤ 20 ns |
| Leakage current | ≤ 1 mA |
| Operating temperature range | -25 °C to +85 °C |
| Operating humidity range | 30 % to 90 % RH |
| Weight | 85 g |
| IP protection rating | IP20 |
| Enclosure color | Black flame‑retardant |
The MD7AP is rated for a discharge current of 10 kA (8/20 µs).
It can operate from –25 °C up to +85 °C.