The AK-Ⅲ hand-operated push-pull interlocking mechanism is used in unit drawers. The interlocking mechanism features three-position locking, three-position display, switch-closed drawer-cabinet interlocking, and auxiliary power supply for testing and connection. Drawer pushing and pulling is driven by the drawer door handle (similar to the MNS large interlocking push-pull method; the main switch closing locking rod is locked to the partition, locking the drawer. The drawer can only be pulled out after the main switch is opened and unlocked; the unlocking button on the left handle must be pressed to pull out the drawer). It is recommended for drawers with currents below 250A. For 630A drawers, our company's HJG-9 hand-cranked push-pull mechanism can be used. The HJG-9 interlocking mechanism is easy to operate, fully meets protection requirements, is inexpensive, and highly practical. The structural diagram is provided by our company.
| H | Standard square hole specifications | Non-standard square hole specifications |
| 67 | 8×8 | 10×10 |
| 80 | 8×8 | 10×10 |
| 117 | 10×10 | 8×8 |
