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Hirschmann A2B-Z DC-12 Height Limit Switch (Anti-Overwinding Switch)
This product is a safety protection device specifically designed for construction machinery. Its core function is to prevent crane hooks from overwinding during ascent, avoiding steel wire rope breakage or equipment damage. Built with a high-strength industrial-grade housing and a precise mechanical trigger structure, it operates reliably in various complex working conditions, making it an essential safety component for cranes, tower cranes, and other lifting equipment.
Description
Tags
| Item | Specification |
| Brand | Hirschmann |
| Model | A2B-Z DC-12 |
| Protection Rating | IP67 (waterproof and dustproof, suitable for harsh outdoor environments) |
| Compliance Standard | IEC60947-5-1 |
| Operating Voltage | DC 12V |
| Trigger Method | Steel wire rope tension trigger |
| Application | Mobile cranes, crawler cranes, tower cranes, and other construction machinery |
| Compatible Models | XCMG QY25/QY50, Zoomlion, Sany Heavy Industry, and other mainstream crane brands |
| Installation | Complete with steel wire rope + fixing clips for mechanical connection |
| Origin | China |
IP67 rating ensures stable long-term operation in rainy, dusty, and other harsh environments, reducing the need for frequent maintenance.
Millisecond-level response via steel wire rope tension changes effectively prevents hook overwinding, protecting both equipment and personnel.
Constructed with high-strength engineering plastic and metal components, it resists impact and vibration to meet the demands of heavy-duty construction operations.
Comes with a matching steel wire rope and fixing clips for direct connection between the hook and limit switch, requiring no additional accessories and fitting seamlessly with factory mounting points on mainstream cranes.
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