♦Protection class up to IP54. ♦With thermal prevention device. ♦With urgent stop switch and reinforced breaking switch with position limit. ♦ ITEM NO.05451 (460W) / 05453(850W) PASSED" " ♦ ACCEPT USE 22M LONG STEEL WIRE ROPE ♦ WITH ELECTRIC TROLLEY TO FORM A LIFTING MACHINERY OF BRIDGE MODE; SINGLE-BEAM MODEL AND ROTARY ARM MODEL