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 RESISTANCE BOXES
RESISTANCE BOXES

GRAB DIFFERENTIAL LIMIT SWITCHES

Application :

The Grab differential Limit Switch is driven by holding and closing winches is used in auxiliary circuits for single lever grab control.

It is used for stopping the closing motor after closing or opening, regardless of the height of the grab and starting the holding motor after closing, for transition to the hoisting action as well as for stopping the holding & closing motors at the hoisting & lowest grab position.

Applications :
Resistors are designed to meet requirement of both A. C. & D. C. application for E. O. T. cranes, winches, rubber mills, coal mines, power plants, conveyors,  blowers etc. for developing starting torques.

Resistors are manufactured : 1. Air cooled type   2. Oil cooled type.

Stainless Steel Grid Resistors :
These Resistors consists of stainless steel wires or strip in form of grids. The current rating generally ranges from 7 Amps to 400 Amps continuous with multiple or single paths.

Punched Steel Grids Resistors :
Punched Grid Resistor consists of grids punched from corrosion resisting Nickel Chromium Alloy sheet steels. The punched steel grids are completely immune to shock & vibration. They function reliably under the worst operating conditions and are particularly suited for steel mill duty. These resistors are available in wide range of current ratings from 8 Amps to 800 Amps continuous with single & multiple parallel paths. Fecral Punched grids resistors are available.

 

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