01701

## Small Size  – Alloys 

Rugged Durability, With Broad Heat and Pressure Capabilities, are Hallmarks of These Compact Switches 

Ideal for shallow tanks or restricted spaces, or for low-cost, high volume use. 

LS-1700 Series – LS-1700 Series – LS-1750 Series – LS-1755 Series – Buna N Float Teflon[®] Float All Stainless Steel All Stainless Steel 9 ~~.~~ 35 GE. Offer broad chemical compatibility for general purpose Rugged construction suitable for most corrosive liquids, and for use. Also ideal for oils and water. high temperatures and pressures. Stainless steel is generally recognized as safe (GRAS) with FDA for food contact regulations. 

## Dimensions 

**==> picture [517 x 181] intentionally omitted <==**

**----- Start of picture text -----**<br>
LS-1700 Seeirs LS-1750 Seeirs LS-1755 Seeirs<br>Buna N olFta Tolfen® olFta Selniatss Setle olFta and Setm<br>7 1/8 "  NPT po 1/8 "  NPT 1/8 "  NPT 1/8" NPT<br>1/2 "  HEX 1/2 "  HEX 1/2 "  HEX 1/2" HEX<br>(12.7 mm) (12.7 mm) (12.7 mm) (12.7 mm)<br>ti ti SPRING | 2<br>(52.4 mm)2-1/16 " L1† (52.4mm)2-1/16 " L1† (52.4 mm)2-1/16 " L1† 1 " (59.1mm)2-21/64" L1† 1-7/32"<br>1 " 3/4 " (25.4 mm) (31.0 mm)<br>(25.4 mm) 1-1/2 " (19.1 mm) 1-1/2 ["] 1-45/64"<br>1-1/2 ["] (38.1mm) (38.1mm) (42.8mm)<br>(38.1 mm)<br>fr|eae (25.4 mm)1 "  DIA. Fak  WASHERFLAT e|e (25.4 mm)1 "  DIA. e | 1-1/2(38.1 mm) "  DIA. aynal 1 =] (26.2 mm)-1/32" DIA.<br>L1= 9/16˝ (14.2 mm) N.O.; 13/16˝ (20.6 mm) N.C.  L1= 1/2˝ (12.7 mm) N.O. and N.C.  L1= 5/8˝ (15.7 mm) N.O.; 3/4˝ (19.1 mm) N.C. L1= 37/64˝ (14.5 mm) N.O.; 53/64˝ (20.8 mm) N.C.<br>† L1= Switch actuation level, nominal (based on a liquid specific gravity of 1.0).<br>**----- End of picture text -----**<br>


## Common Specifications 

**Electrical Termination:** No. 22 AWG, 24˝ L., Polymeric Lead Wires, (except Part No. 79990 which has Teflon[®] Lead Wires). 

**Approvals:** Series Nos. LS-1700, LS-1750 and LS-1755 are U.L. Recognized – File No. E45168 and CSA Listed – File No. 30200. 

**Switch Operation:** Units are shipped N.O. unless otherwise specified. Selectable, N.O. or N.C., by inverting float on unit stem (except for LS-1700 Series switches with Teflon[®] Floats; see selection in “How to Order” table). 

How To Order – Select Part Number based on specifications required. 

||**Material**|**Material**|**Material**||||||
|---|---|---|---|---|---|---|---|---|
|**Series**<br>**Number**|**Stem and**<br>**Mounting**|**Float**|**Other**<br>**Wetted**|**Min. Liquid**<br>**Sp. Gr.**|**Operating Temperature**|**Pressure,**<br>**PSI, Max.****|**Switch***<br>**SPST**|**Part**<br>**Number**|
|LS-1700|Brass|Buna N|316 S.S.,<br>Epoxy|.45|Water: to 180°F (82.2°C)<br>Oil: -40°F to +300°F (-40°C to +149°C)|300|20 VA|**01701**|
||316 S.S.||||||20 VA|**01702**|
||316 S.S.|Teflon®||.85|-40°F to +250°F (-40°C to +121.1°C)|1000|20 VA, N.O.|**26791**|
||||||||20 VA, N.C.|**27980**|
|LS-1750|316 S.S.|316 S.S.|316 S.S.|.70|-40°F to +300°F (-40°C to +148.9°C)|100|20 VA|**01750**|
||||||-40°F to +480°F (-40°C to +204.4°C)||20 VA|**79990**|
|LS-1755|316 S.S.|316 S.S.|316 S.S.|.90|-40°F to +300°F (-40°C to +148.9°C)|275|20 VA|**01755**|



* See “Electrical Data” on Page X-5 for more information. 

** Higher pressures are temperature dependent. 

= **A-10** 

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