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6
5. SPECIFICATIONS
5.1
Voltage
±24 or ±48 V
DC
Typical
±22 to ±58 V
DC
Maximum
5.2
GMT Fuse Size
0.18 to 20 Amps Max*
450A@60V
DC
I.R.
(Littelfuse Type 481 Series)
5.2. TPA Fuse Size
3 to 50 Amps Max*
(Bussmann TPA style fuse)
5.3. Current/GMT Bus 50 Amps Max**
5.4. Current/TPA Bus 120 Amps Max**
5.5. Current/Input
120 Amps Max
(fuse at 150A)
5.6. Output/Bus
4 TPA & 5 GMT
5.7. Busses/Panel
2 Busses per Panel
5.8. Input Block
Two ¼” Studs on
5
/
8
centers
Max std lug is 1 AWG
Max lug width = 0.710”
5.9. GMT Output
#22 AWG to 12 AWG wire
Or fork/ring for #6 screw,
10AWG forks/rings will work
5.10. TPA Output
#20 AWG to #10 AWG wire
#6 AWG & #8 AWG with
narrow tongue lug (#6 screws)
Max lug width = 0.375”
5.11. Alarm Block
0.045” sq wire wrap pin
5.12. Relay Current
1 Amp/58Vdc max
5.13. Dimensions
1¾ H, 17 W,10½ D
(excluding brackets)
5.14. Rack Mounting
19” and 23” Racks
1” and 1.25” hole spacing
for WECO and EIA style racks
5.15. Weight
Approx 10 lbs
5.16. Operating Temp. -40 to +55C (ambient)
(-40 to +131F)
5.17. Color
Off-white
5.18. Short Circuit
450A (Max)
Withstand Rating
5.19. Voltage Display
0 to ±60.0 V
DC
, 0.1V
resolution, ±1%
5.20. Current Display
0 to ±199 A
DC,
1 A
resolution, ±3%
*We recommend that you size fuses such that they do
not run at more than 70% of their rating. Thus a 20A
fuse should not be run at more than 14 A. TPA fuses
should be sized such that they do not run at more than
70% of their ratings. Thus a 50A fuse should not be
run at more than 35A.
**The sum of the fuse currents must not exceed the
bus rating.
Compatible lugs for Input Block
2 hole compression lugs for 1/4” studs on
5/8” centers (torque 5.5ft-lbs) example;
Panduit®
LCD1-14A 1awg wire
LCD2-14A 2awg wire
LCD4-14A 4awg wire
LCD6-14A 6awg wire
LCD8-14A 8awg wire
The Panduit® CT-1700 crimping tool can be
used for securing wire to any of these lugs.
Input wiring should be rated 90°C or better
and fused at 125% of total Bus current (ie:
up to 150 Amps MAX rated input
fuse/breaker)
Output lugs
(locking fork recommended):
Ring or fork for #6 screw (up to 10awg).
Torque to 9 in-lbs, use wire rated 90°C or
better.
Or “Narrow Tongue” ring lugs by Burndy, for
the large cable and the TPA blocks:
Burndy# YA8CLNT6 (8 AWG wire)
NOTE:
If fuse size is not specified in the
equipment manual, fuses should be selected
such that they do not run at more than 70%
for GMT’s and 70% for TPA’s, of their rating.
When installing fuses, the sum of the fuse
currents installed in each bus should not
exceed the bus current rating (120 Amps) or
input fuse rating.
