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Telect, Inc. • USA +1.509.926.6000 • Mexico +1.52.33.3836.3700
Poland +1.48.713.239.100 • UK +1.44.1489.889500 • www.telect.com
Copyright © 2002 Telect, Inc., All Rights Reserved
Page 1-3
SPECIFICATIONS
Mechanical Specifications
Ground Terminals Quantity: 2 Pair
Stud Size: 1/4 in.
Cable Size: Up to #1/0 AWG (one per lug), de-
pending on input interruption device.
Lug: Dual-hole compression lug with
1/4 in. dia. holes (7 mm) on 3/4 in.
(19 mm) centers
1
Lug Fasteners: 1/4 - 20 KEPS nuts and flat washers
Socket Size for Nut: 7/16 in. (12 mm)
Maximum Torque: 6 ft-lb (8.13 N•m)
1. See Lug Chart on 9 for suggested manufacturers.
Input Terminal Bus Plate Number of Plates: Total 4: 1 BATT & 1 RTN per feed.
Each terminal plate capable of
supporting up to two, dual-hole input
lugs (standard configuration)
2
.
Hole Size in Plate: .406 in. dia. (10 mm) on 1 in.
(25.4 mm) centers
Cable Size: One 750/777.7MCM (max.) per
-48Vdc or RTN lug. (Size of cable
depends on size of input interruption
device and plant voltage drop
requirements.)
Lug: Dual-hole compression for hole and
cable size specified above
3
Lug Fasteners: Grade 2, 3/8 - 16 bolts, nuts, lock
washers, and flat washers
Socket Size: 9/16 in. (14 mm) for bolt heads and
nuts
Maximum torque: 17 ft-lb (~23 N•m)
2. Up to four dual-hole input lugs with the optional RTN external bus bar extension kit.
3. See Lug Chart on 9 for approved manufacturers.
Output Breakers & Terminals Breakers: Total 36 (18 per feed), bullet-style
Terminals:
Quantity: One per single or double breaker
Stud Size: 1/4 in.
Cable Size: • For single-pole breakers, one,
#2 AWG (max.) per lug
• For double-pole breakers, one,
#1/0 AWG (max.) per lug
4
Lugs: Dual-hole compression with 1/4 in.
dia. holes on 3/4 in. (19 mm) centers
2
Lug Fasteners: 1/4 - 20 KEPS nuts and flat washers
Socket Size for Nut: 7/16 in. (12 mm)
Maximum torque: 6 ft-lb (8.13 N•m)
4. Double-pole breakers require an optional two-pole adapter.
Output RTN Terminal Bus Plate Number of Plates: One bus plate per feed accommo-
dates 18 output RTN lugs
Hole Size in Plates: 1/4 in. dia. (7 mm) on 3/4 in. (19 mm)
centers
Cable Size: • For single-pole breakers, one,
#2 AWG (max.) per lug
• For double-pole breakers, one,
#1/0 AWG (max.) per lug
3
Lugs: Dual-hole compression for hole and
cable size specified above
2
Lug Fasteners: Grade 2, 1/4 - 20 bolts, KEPS nuts,
and flat washers
Socket Size: 7/16 in. (12 mm) for bolt heads and
nuts
Maximum torque: 6 ft-lb (8.13 N•m)