Metering cubicle M is installed on the energy metering device on user's high-voltage side, equipped with current transformer and voltage transformer, and has the fuse of protecting voltage transformer, and anti-stealing electric energy measurement joint junction box.
| Model | YCC-M-12 | YCC-M-24 |
| Rated voltage | 12kV | 24kV |
| Rated current | 630A | 630A |
| Rated frequency | 50Hz | 50Hz |
| 1min rated short-time power frequency withstand voltage (phase / fracture) | 42/48kV | 65/79kV |
| Rated lightning impulse withstand voltage (phase / fracture) | 75/85kV | 125/145kV |
| Rated short circuit withstand current | 20kA | 20kA |
| Rated short circuit withstand current duration | 4s | 4s |
| Rated peak withstand current | 50kA | 50kA |
| Weight | 1400：190kg/1600：200kg | 230kg |
