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MDI mercury contactors/relays are durable and float switches and liquid level controls for water and sewage Liquid Level Control Floats
Contactors and Solid State Relays,
Tilt, Tip-over and Proximity Switches
Motion and Shock Sensors.
MDI Mercury Displacement Industries Relays, Contactors, Liquid Level Control Floats, Tilt and Tipover switches
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Relay, Vertical, Liquid Level Control Floats, Tilt and Tipover switches
Mercury Floats


* Float Installation * Float Drawings *
* Price quote form * Go Back *

A & B Series float
A & B size small floats
Small Mercury Float

A Series
Narrow Angle Operation
1 AMP @ 120 VAC

B Series
90° Operating Angle
1 AMP @ 120 VAC




Black Mercury Float - Normally Open
Black Mercury Float - Normally Open
Yellow Mercury Float - Normally Closed
Yellow Mercury Float - Normally Closed


Medium Mercury Float

C Series
Narrow Angle Operation
13 AMP @ 120 VAC
6 AMP @ 240 VAC
with 16 GA.cord

D Series 30°. Operating Angle
13 AMP @ 120 VAC
6 AMP @ 240 VAC
with 16 GA. cord

E Series
90° Operating Angle
13 AMP @ 120 VAC
6 AMP @ 240 VAC
with 16 GA. cord

For Liquid Level Control Floats, Contactors and Solid State Relays, Tilt, and Tipover contact MDI TODAY!

* P. O. Box 710 * 25028 U.S. 12 East * Edwardsburg, Michigan * 49112 *
* PH. (269) 663-8574 * FX. (269) 663-2924 *
* Toll Free US and Canada (800) 634-4077 *