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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 Float Quote Form


* Float Drawings * Float Installation *
* Go Back *



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 Catalog Number-

Numbering system sample: G F 2 O W 10 R1   W
  A B C D E F G H

A - Basic Switch Series

Mercury Float Switches
A - TS-1 — 1 AMP @ 120 VAC Pilot Duty Narrow Angle Tilt Switch
B - WATS-1 — 1 AMP @ 120 VAC Pilot Duty Wide Angle Tilt Switch
C - TS-10 — 13 AMP @ 120 VAC / 5 AMP @ 240 VAC Narrow Angle Tilt Switch
D - NATS-20 — 13 AMP @ 120 VAC / 6 AMP @ 240 VAC Narrow Angle Tilt Switch
E - WATS-20 — 13 AMP @ 120 VAC / 6 AMP @ 240 VAC Wide Angle Tilt Switch
Mechanical Float Switches
G - ½ H.P. 90º
H - 1 and 2 H.P. 90º (Must have 14 Gauge cord)
K - 10 AMP Pilot Duty Narrow Angle Tetherless
L - 25 AMP 90º (Must have 12 Gauge cord) Not UL
N - 10 AMP Pilot Duty Narrow Angle
P - ½ H.P. Narrow Angle
R - ½ H.P. Narrow Angle Tetherless
S - NEW! MINI 5 AMP 120/250 VAC 90º Wide Angle - No motor load or UL
X - NEW! MINI 5 AMP 120/250 VAC Narrow Angle - No motor load or UL
Note: The new mini floats must use a black ABS float, select F below in
"Float sizes and standard color" & in "Float material" Select 2 for ABS
Please select here:   Req.
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B - Float sizes and standard color
Please pay close attention to the switch while selecting
Normally Open Normally Closed Switch used with float type
S - Small black ABS only S - Small black ABS only A and B series
M - Medium black HIPS only B - Medium yellow HIPS only C, D, and E series
F - Mechanical black ABS and HIPS Y/W - Mechanical
yellow or white ABS only
G, H, K, N, P, or R series
R - Mechanical red
ABS only
B - Mechanical blue
ABS only
G, H, K, N, P, or R series
G - Green for Double throw Mechanical ABS and HIPS G, H, K, N, P, or R series
T - Ultra-High Temp (221ºF) - Teel for N.O. or N.C. Mechanical Polycarb floats
Basic Switch Series must be a G, P or R & Float material must be 3 & Cord material is T - Teflon for Polycarb

Please select float here:   Req.
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C - Float material
1 - High Impact Polystyrene (HIPS)
2 - Acrylontrile Butadiene Styrene for 85º C, or 186º F (ABS)
3 - Poly carbonate for 105º C, or 221º F (Polycarb) For Ultra-High Temp only
Select Float material here:   Req.
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D - Contacts
O - Normally open
C - Normally closed
D - Double throw - L series floats can not be Double Throw
Select Switch position here:   Req.
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E - Cord type and material
Y - 18 Gauge-Chlorinated polyethylene CPE
W - 16 Gauge-Chlorinated polyethylene CPE
U - 14 Gauge-Chlorinated polyethylene CPE
S - 18 Gauge-Teflon jacketed (for 105º C or 221º F) You MUST use Teflon for Ultra-High Temp
T - 16 Gauge-Teflon jacketed (for 105º C or 221º F) You MUST use Teflon for Ultra-High Temp
P - 12 Gauge-Chlorinated polyethylene CPE
Select Cord type here:   Req.
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F - Cord Length
Please select a length from 06 to 50 feet in even foot increments.
Longer and shorted lengths available, please ask for information in the comments box at the end of your quote.
Please select Cord Length here:   Req.
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G - Termination and Label Designation
115 VAC and 230 VAC Plugged floats must be at least 6'
00 - No termination w/ standard skive (1¾" skive w/a ¾" strip)  (Component Recognized)
C1 - 115 VAC Series plug label on cord (Listed)
F1 - 115 VAC Series plug label on float (Listed)
R1 - 115 VAC Series plug - no label - (Component Recognized)
C2 - 230 VAC Series plug label on cord (Listed)
F2 - 230 VAC Series plug label on float (Listed)
R2 - 230 VAC Series plug - no label - (Component Recognized)
R3 - 3 Pin barrel plug no label (Component Recognized)
Please select Plug Type here:   Req.
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W - Optional
B - Individually boxed
W - External weighted — Weight Outline PDF The PDF will open in a new window
BW - Individually boxed and Externally weighted
Please select option here:
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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 *