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391 GuardSwitch Series

Interlock Switch


The 391& 393 is a seamless stainless steel defeat resistant interlock/position sensor that is ideal for heavy wash-down applications.  


-  USDA Approved Housing
-  Food Processing Machines
-  Rugged, Seamless SS Housing
-  Requiring Highly Defeat Resistang Switches
-  Wash-down and Corrosive Environments


391 GuardSwitch Series

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Catalog Numbers

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Catalog Number

N.O., 150VA, 120VAC, 6Ft. 18/2 SJTOW
Stainless Steel
See catalog page


N.O., 150VA, 120VAC, 12Ft. 18/2 SJTOW
Stainless Steel
See catalog page




Agency Approvals

cULus Recognized (E122942)
CSA Certified (LR89176)
NEMA Ratings:  1, 2, 3, 4, 4X, 5, 6, 12, 12X
Protection Class:  IP67


Enclosure:  304 Seamless Stainless Steel

Temperature Range:  -40F to 180F (-40C to 80C)

Environmental:  Hermetically sealed contact switch encapsulated in polyurethane

Response Time :    1 msec (5.AVA); 10 msec (150VA)

Life cycles:  100,000 under full load; up to 200,000,000 under dry circuit

Lead Types/O.D.:   SJTOW (K) 18/2, 0.30 " (0.76cm)


Catalog Pages
Installation Instructions