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Designed specifically for SANY and various types of lifting equipment, this is a core safety device to prevent hook overtravel and ensure construction safety.
| Item | Specification |
| Applicable Equipment | SANY 25t–100t mobile cranes, various general lifting equipment |
| Rated Voltage | DC 24V (compatible with original crane electrical systems) |
| Rated Current | 5A |
| Trigger Method | Weight lift trigger |
| Protection Class | IP54 |
| Housing Material | Cast iron + powder coating |
| Weight Material | Galvanized steel |
| Mounting Hole Spacing | 120mm × 60mm |
| Operating Temperature | -20℃ ~ 60℃ |
| Response Time | ≤0.5s |
| Symptom | Troubleshooting Steps |
| No alarm/circuit cut-off after triggering | Check for broken cables, loose terminals, or burned internal contacts |
| False triggering or failure to reset | Inspect for weight misalignment, stuck pull ropes, or faulty internal springs |
| Delayed response | Clean contact dust, replace worn pull ropes or weights |