Master Switch/Drum Controller

Type 4253

Hubbell Master Switches are used to provide single handle pilot control of hoists, cranes, oven pushers, car movers and other equipment requiring speed steps of wound rotor or direct current motors.

Type 4258

Hubbell Drum Controllers start, stop and change the speed and/or rotating direction of reversible AC and DC electric motors.

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Pressure Switch

Description

Hubbell pressure switches provide automatic control for air or water systems such as compressors, dry sprinkler systems, and well pumps or pumping systems. Thousands of variations are available to provide maximum flexibility at minimum cost.

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Alternating Relays

Description

The Class 47 alternator relay provides a means of automatically alternating the operation of two separetely mounted motor driven pumps or compressors. This alternating action assures even readiness and wear on both pumps.

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