Features: HHBB Series Electric Chain Hoist include suspension electric hoist, electric hoist with hand trolley, electric trolley with motor trolley and low headroom electric hoist. Every type could be equipped to single speed and double speed. Electric chain hoist has following features: Operating voltage is 24V/36V, safety to workers; Dual break system, immediately performed by automatic brake during emergency power cut; Limit switches to protect both lifting and dropping works to prevent from exceeding the limits; Special anti phase power protective device to control over failure circuit of wrong power connection. Hand switch us 4 push direction buttons with emergency button too. G80 galvanized or cementite lifting chain, high tensile alloy steel with heat treatment. Power 220V-660V, 50Hz/60Hz, 3 Phase; Dual voltage available.