GJ-type anti-volume switch (hook limit switch) is used for lifting wire rope anti-volume limit an electrical automatic protection switch. It is an appropriate weight of the hammer supporting the use of hook up and down movement to hold up or disconnect or turn-on switch, put down the hammer to achieve the purpose of automatically cut off the hoist power supply connected braking system to limit rope over volume, and reach hook in the purpose of a certain height within the lift.

GJ-type anti-volume switch (hook limit switch), please take a look at the following main models:
GJ-1 :to reach the peak normally open (ie, hook across the boom, loop disconnect)
GJ-3: to reach the peak normally closed (hook met crane, closed loop)

GJ-type anti-volume switch (hook limit switch) Product description:
1, applies to DC and AC voltage 12 ~ 380V; Rated current: 5A.
2, rated current: 10A
3, supporting the external hammer weight: ≥ 1.7kg.

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Yichang WTAU Electronic Equipment Co. Ltd is a national high-tech enterprise which located in the “Hydropower capital”— Yichang. WTAU is committed to researching , developing and producing safety devices for crane cranes , automatic monitoring control systems , etc. WTAU puts the principle “make sure the lifting equipments are operated safely and reliably” as our duty and takes the high-tech as the core. WTAU has awarded many patents and major achievements of science and technology. The Torque Limiter, Weight Limiter, Anemometer ,etc. which are researched independently  are widely used in electrical, chemical, steel, metallurgy, construction, ports, shipping and other industries.

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