HUBBELL ELECTRICAL PRODUCTS
A Division of HUBBELL INCORPORATED (Delaware)
3940 Dr. Martin Luther King Drive
St. Louis, Missouri 63113 USA
INSTALLATION, OPERATION &
MAINTENANCE DATA SHEET
SERIES USF JUNCTION BOXES
Increased Safety Terminal Enclosures For Use In
Zone Classified Hazardous Locations
P/N KIL00921445 FORM NO. K1445 R6/18 ECO-2-045-18
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FIGURE 1 - USF (HINGED COVER) - (See Table 6 and 7 below)
Note: The maximum hole size for enclosure depths of 6" (153mm) through 20" (508mm) and with
blank walls is a 4" NPT (M100). The maximum hole size for enclosure with a depths of 6"
(153mm) and with gland plate cut outs is 3"NPT (M75). The maximum hole size for enclosure
depths of 8" (203mm) through 20" (508mm) and with gland plate cut outs is 4" NPT (M100).
