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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
Relay, Vertical, Liquid Level Control Floats, Tilt and Tipover switches
Our Solid State Relay Quote Form

SS20AE | SS20AU | SS20DU | SS30AU | SS30DU | SS50AE | SS50AU | SS50DU | SS70AU | SS70DU


* Solid State Relays * Go Back *

Don't forget, you can Buy Online!

If you already have your part number and you do not need the below form use our Quick Quote Form.



Please select either order or quote:   Req.
Your name or business:    Req.
E-Mail address:    Req.
Location:    Req.
             City and State or Country
Phone number:    Req.


-Build a Solid State Relay Catalog Number-

Numbering system sample: SS L 30 D U
    A B C D


A - Load Voltage

Load - 230 VAC or 600 VAC
Please select Load Voltage:    Req.


B - Ampere of Relay

1 Pole - 20, 30, 50 and 70 AMP
Please select Ampere here:    Req.


C - Voltage of Coil

AC - I/O Signal: 24-275VAC, 24-48 VDC
DC - I/O Signal: 4-32 VDC
Please select Coil Voltage here:    Req.


D - Terminal Layout

Contactor - Standard contactor wiring
SSR - Standard Solid State wiring 30 and 70 AMP only available in SSR Layout
Select :    Req.


Please select how many you would like    Req.


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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 *