Thomas & Betts Russellstoll 9MT Series Instruction Sheet

Instruction Sheet for DuraGard
When your application calls for the utmost in safety and reliability,
circuit breaker protected DuraGard
industry's only breaker protected premium nonmetallic interlocked
outlet. Molded from DuraV ® high performance thermoplastic,
® ®
Russellstoll DuraGard Safety Interlocks can be used in industrial,
commercial and process manufacturing environments. UL listed as
enclosure type 4X (screw cap version). Flap cap version available for
indoor use only.
Interlocks are available in 30 or 50 Amp ranges, either 2p3w or 3p4w
with 5 standard polarizations to a maximum 3p4w, 480vac rating.
DuraGard ® applications can include:
o Maintenance and repair facilities
o Shipyard welding stations
o Job site temporary power stations
o Data Center /hardware protected outlets
o Portable equipment & mobile generators or lighting
o Industrial power outlets for factories
WARNING
Risk of electrical shock. De-energize all power prior
to installation or repair

PREPARATION

1. Recommended Tools & Accessories
Cable Cutters
Slip Jaw Wrench
Screw Drivers
Ohmmeter
2. Turn handle #8 to "OFF" position.
3. Note Fig. A. Cutaway. Remove cover #3 (4 screws #2) if attached
to base. Mount base to wall or I-beam at a
power drop with receptacle facing down, using adjustable swing-
out mounting feet #1 for 4-point or center hung 3-point screw
mounts. Tighten mounting screws to 20 in. lbs. Select wire
/cable based on allowable ampacity Fig. B. If conduit entry, set and
tighten conduit fi tting, with O-ring between enclosure and threaded
hub.
4. Attach ground wire #4 per schematic (Fig. C), to grounding hub #7.
Establish wiring so that same colored/numbered
circuits are maintained through each junction, with special
attention to grounding lead connection.
5. Loosen pressure screws #5 on terminals of circuit breaker #6 and
neutral block if used. Strip wire ends
conduit ) to 5/8" and insert into breaker terminals
(line side). Tighten to value shown on breaker
(See Fig. C).
6. Make sure disconnect handle #8 is in "OFF" position and
reassemble cover #3 with screws #2 at max. 20 in. lbs. torque.
Verify proper operation per "Electrical Testing" and "Operation"
procedures.
7. Note catalog number, date and fi le instruction sheet for
reference. See "OPERATION" section and instruct
personnel accordingly.
Russellstoll
Catalog Number Series 9MT
®
Safety Interlocks provide the
Wire Strippers
Torque Wrench
Allen Wrench
Liquid-tight Conduit Fitting
de-energized
(from
®
®
Safety Interlock
8
2
4
7
FIG. A
DuraGard ®
Ampere Rating
30
#8 FLEXIBLE (or building wire)
50
#6 FLEXIBLE (or building wire)
FIG. B
GROUND
TERMINAL
(3P4W SHOWN)
FIG. C
3
6
5
Maximum Cable Size
AWG 60°C
#8 7 STRAND
#6 7 STRAND
GROUNDING HUB
LINE SIDE
L1 L2 L3
CIRCUIT
BREAKER
LOAD SIDE
T1 T2 T3
- PREWIRED -
G
Z
X
Y
(BACK OF)
RECEPTACLE
2P3W: X/L1(N),Y/L2,G/
3P4W: X/L1,Y/L2(N),Z/L3,G/
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