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     The product is to service at the electrical circuit of AC 50~60Hz, AC380V, DC220V and current of 10A to limit the travel of horizontal mechanism of the crane and execute terminal protection.

The nominal service conditions include an ambient temperature of-5℃~+40℃, ambient relative humidity of 90%, mechanical life of one million times and protection degree of IP44. It complies with the standard of IEC337-1 and GB14048.5-2001.