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381 GuardSwitch 1/2" Conduit Enclosure

Interlock Switch


This is a defeat resistant interlock/position sensor for conduit connections and easy installation.  


-  Requiring Highly Defeat Resistant Switches
-  Heavy-Duty Housing
-  Conduit Connection
-  Terminals
-  Non-wash down Environment

381 GuardSwitch 1/2

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Catalog Numbers

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Catalog Number

N.O., 2.5VA / 2.5W, 30VAC DC, 1/2 in. Threaded NPT
Dark Grey
See catalog page


N.O., 150VA, 120VAC, 1/2 in. Threaded NPT
Dark Grey
See catalog page




Agency Approvals

cULus Recognized (E122942)
CSA Certified (LR89176)
NEMA Ratings:  1, 2, 5
Protection Class:  IP64


Enclosure:  Coated Aluminum

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

Environmental:  Hermetically sealed contact switch encapsulated in polyurethane

Response time (individual circuits):  1 msec (5. AVA);  10msec (150VA)
Life cycles:  100,000 under full load;  Up to 200,000,000 under dry circuit

Conduit Connection:  1/2 " Threaded NPT


Catalog Pages
Installation Instructions