Amphenol GMT Series User manual

High-Power GMT Series Fuse Panels
Models 0HPGMT Installation Guide

2
Amphenol Network Solutions
All rights reserved. 12.20.19 130316-8
509.926.6000 — amphenol-ns.com
High-Power GMT
Series Fuse Panel
Installation Guide, Part Number 130316-8
Copyright 2019, Amphenol Network Solutions. All Rights Reserved.
Amphenol Network Solutions
22425 East Appleway Ave. # 11
Liberty Lake, WA 99019
Amphenol Network Solutions assumes no liability from the application or use of these products. Amphenol
Network Solutions does not convey any license under its patent rights nor the patent rights of others. This
document and the products described herein are subject to change without notice.
About
Amphenol Network Solutions is a global innovative original equipment manufacturer that serves the data and
communications markets. We design, manufacture, and distribute products for customers who need an end to
end solution for network connectivity, fiber, power distribution and rack management. We collaborate with our
customers to deliver product solutions that exceed expectations with innovative designs and world class quality.
Amphenol Network Solutions is the industry thought leader on network cable management.
Telect, Inc. has been a market leader in secondary DC power distribution for over 36
years. Through our acquisition by Amphenol and our merger with All Systems
Broadband, to become Amphenol Network Solutions, we have continued to deliver
reliable, high-quality solutions to power, protect, and monitor today’s network servers and
equipment. We are proud to be an Amphenol company that will continue to be Powered
by Telect.
Technical Support
Email: [e-mail]
Phone: [phone]

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High-Power GMT
Series Fuse Panel
Table of Contents
1.1 Overview...............................................................................................................................4
1.1.1 Specifications .................................................................................................................5
1.1.2 Standard & Special Features ..........................................................................................7
1.2 Inspection..............................................................................................................................9
1.3 Installation Consideration ......................................................................................................9
1.4 Installation Procedures........................................................................................................10
1.4.1 Installing the Panel .......................................................................................................10
1.4.2 Replacing the Alarm Board ...........................................................................................14
1.5 Parts & Accessories ............................................................................................................15
1.6 Service................................................................................................................................16
1.7 Block Diagram.....................................................................................................................16
1.8 1RU Dimensions .................................................................................................................17
1.9 2RU Dimensions .................................................................................................................18
List of Figures
Figure 1 – 0HPGMT Models ....................................................................................................4
Figure 2 – Model 0HPGMT05R (Front View) ...........................................................................5
Figure 3 – Alarm Panel ............................................................................................................7
Figure 4 – Model 0HPGMT05BR (Rear View) .........................................................................8
Figure 5 – Alarms ....................................................................................................................8
Figure 6 – Mounting Dimensions ...........................................................................................10
Figure 7 – Ground Lug Connection........................................................................................11
Figure 8 – Compression Lug Connection...............................................................................11
Figure 9 – Alarm Board..........................................................................................................14
Figure 10 – Power, Battery Return and Fuse Circuit..............................................................16
Figure 11 – 0HPGMT05R Dimensions...................................................................................17
Figure 12 – 0HPGMT12R Dimensions...................................................................................18

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High-Power GMT
Series Fuse Panel
1.1 Overview
The Amphenol Network Solutions high-power
GMT series fuse panels provide protected secondary
-48V VDC to telecommunications equipment at the
bay level (-48 VDC, nominal). Fuse panels are
available with GMT fuses in single-circuit (10, 20 and 30)
or dual-circuit (10/10, 15/15 and 20/20) configurations.
Shown on the right are the front and rear images
of a dual-circuit high-power 10/10 GMT fuse
panel and a front corner view of a 10/10 GMT
TFA fuse panel.
Standard features include:
•Single- or dual-circuit, 100A input bus(es), -48 VDC
•Discrete GMT fuse positions: 15A capacity without fuse management for heat dissipation
•Alarm circuit board replaceable with panel in service (hot-swap)
•Minimal rack space: one 1.75" EIA or 2" WECO rack unit (1RU) for rear access connections; 2RU for total
front access of dual-circuit 10/10 configuration
•19" or 23" rack mounting, with mounting brackets provided (dual-circuit 20/20 panel requires a 23" rack)
•Transparent terminal cover to meet electrical and equipment safety standards
•Dummy GMT fuses provided for all fuse holders
•Holes provided in chassis for inserting colored fuse designation pins
•NEBS Level 3 (Zone 4) and CE certified
•Fire rating: UL 94V-0 and/or VW-1 (for writing)
Special features include:
•Noise filter circuitry (0HPGMT05NR)
Front view
Rear view
0HPGMT05R (1RU panel)
0HPGMT12R (2RU panel)
Fig. 1: 0HPGMT Models

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High-Power GMT
Series Fuse Panel
All models are recognized by UL for the USA and Canada with the exception of models 0HPGMT02R,
0HPGMT03R, 0HPGMT05R, 0HPGMT07R, 0HPGMT08R and 0HPGMT12R, which are listed by UL for the USA
and Canada.
The Amphenol Network Solutions high-power GMT series fuse panels use discrete, not modular, GMT fuse
holders to limit heat buildup when using 15A GMT fuses.
1.1.1 Specifications
Environment:
Specifications:
Temperature range
-25°C to 55°C (-13°F to 131°F)
Humidity
5% to 85%, non-condensing
Altitude range
-197 ft. to 13,100 ft. (-60 m to 4000 m)
Acoustic noise
0 dBA above ambient
Fit and Finish:
Specifications:
Material
(Custom color/finish available)
Cold-rolled steel, powder-coat telephone grey, baked polyurethane
Clear polycarbonate protective terminal cover
Weights (Approximate):
Specifications:
Weight
8 to 12 lb (~3.5 to 5.5 kg), depending on model
Pullout circuit designation card
Replaceable alarm card
Holes for designation pins
Discrete GMT fuse holders
Fig. 2: Model 0HPGMT05R (front view)

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Mechanical interface:
Specifications:
Input terminals — compression
Stud:
Lugs:
Cable:
Torque:
1/4 -20 with nut. [Use 7/16" (12 mm) socket)
Dual-hole compression lug
(5/8" center to center) 0.516-inch (13.4 mm) max. lug width
Up to 1/0 AWG copper, depending on input interruption device
50 in-lb. (~5.5 N•m), max.
Output terminal - Wire
binding/compression
Screw:
Wire:
Lug:
Spacing:
Torque:
#6 Phillips* panhead
14 to 22 AWG, copper wire
10 to 22 AWG, copper wire
3/8" (9.5 mm) centerline with barrier distance of .260-inch (6.6 mm)
6.5 in/lb. (~0.75 N•m), max.
Alarm terminals – wire wrap
.045-inch square wire wrap pins on 0.156-inch centers
Ground terminals
Screws:
Lugs:
Cable:
Torque:
2 #10 Phillips* panheads
Single- or dual-hole compression lug (5/8" center to center)
Dual-hole lug is recommended
Up to #6 AWG copper for single-hole lug (Conductor size depends on input
interruption device)
21 in/lb. (~2.5 N•m), max.
* Screws with cross-recessed heads
Dimensions:
Specifications:
Dimensions (nominal) ǂ,
without brackets for all but
0HPGMT12R & 0HPGMT02R
Width:
Height:
Depth:
17" (432 mm)
1.75" (44.4 mm)
12" (305 mm)
Dimensions (nominal) ǂ,
without brackets for 0HPGMT02R
Width:
Height:
Depth:
21" (533 mm)
1.75" (44.4 mm)
12" (305 mm)
Dimensions (nominal) ǂ,
without brackets for 0HPGMT12R
Width:
Height:
Depth:
17" (432 mm)
3.5" (89 mm)
7.5" (190 mm)
ǂSee pages 17 and 18 for exact dimensions
Electrical interface:
Specifications:
Operating voltages
-48 VDC, both sides
Current capacity:
All Except
0HPGMT05NR
0HPGMT05NR
100A per bus (200A total for dual-circuit panels), max.
75A per bus (150A total for both buses)
Fuse capacity:
Single circuit:
Dual circuit:
10, 20 or 30
20, 30 or 40 (total, both circuits)
Maximum input interruption device rating
125A for a 100A bus; 90A for a 75A bus
Maximum output interruption device rating
15A GMT fuse
Interrupt rating
450A
Short circuit withstand current
450A
Alarm contact relay
2A
Alarm board power rating @ 48 VDC
1W
Panel heat dissipation per 100A bus
@ % load
1.0W (3.4 BTU/hr) @ 0%
1.2W (4.1 BTU/hr) @ 25%
4.8W (16.5 BTU/hr) @ 50%
11.4W (38.7 BTU/hr) @ 75%
21.3W (72.6 BTU/hr) @ 100%
Percentage of full load heat dissipation at
nominal voltage
Less than 1% of total load wattage

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High-Power GMT
Series Fuse Panel
1.1.2 Standard & Special Features
The following table compares the features of all standard 0HPGMT panels. All panels include a rear or front
transparent cover and most, except as footnoted in the following chart, can be mounted in either 19" or 23" racks.
The sections that follow briefly describe some of the standard and special features included with these panels.
Custom combinations of features are available. Please contact the Amphenol Network Solutions inside sales
team at 509.926.6000.
Table 1 – Product Comparison Chart
Model Number
Fuse Array
-48 VDC
Noise Filter
0HPGMT05R
Dual 10/10
X
0HPGMT05NR
X
X
0HPGMT12Ra
X
0HPGMT03R
Dual 15/15
X
0HPGMT02Rb
Dual 20/20
X
0HPGMT10R
Single 10
X
0HPGMT08R
Single 20
X
0HPGMT07R
Single 30
X
a. Full front access, 2RU
b. 23" only
GMT fuses are available in capacities ranging from 0.18A to 15A. A unique feature of the Amphenol Network
Solutions High-Power Fuse Panel is that the fuse positions are oriented so the identification flags face down to
accommodate easy location of a blown fuse when the panel is at the top position of a relay rack or bay. (GMT
splash covers are optional for maximum safety when fuses blow.)
Another unique feature of the GMT panels is a small hole below each fuse position to accommodate color-coded
optional designation pins. Designation pins are useful for quickly identifying required fuse positions and rating of
the fuses. The panel is delivered with “dummy” fuses in all positions.
The standard front panel includes dual-color LEDs
for power and failure alarms on the face of an easily
removable/replaceable alarm card:
•The POWER LEDs are green when power
is an and red when power to that side goes off.
•The FAIL ALARM LED is green when all
installed fuses are OK and red when any
installed, operable fuse blows or if either
A or B power goes off.
Fig. 3: Alarm panel

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Below the LEDs and alarm card is a pull-out circuit designation card accommodating up to 40 circuit designation
entries.
The back panel of the 1RU panels contains input and output terminal connections (NEG connections at top; POS
or RTN connections below), chassis ground connections and wire wrap pins for external alarm hookups.
1.1.2.1 Bay & Failure Alarm Options
The panel is available with alarm relays for standard remote/visual/audible failure alarms to activate lights and
sound alarms when either power feed to the panel fails and/or any fuse blows.
Figure 5 shows the hookups for failure alarms.
Bay Alarms
Standard Alarms
Wire Wrap Pin Arrangements for External Alarm Hookups
Side B Input Terminal
Side B Output Terminals
Chassis
Ground
Side A Output Terminals
Side A Input Terminal
Fig. 4: Model 0HPGMT05BR (Rear View)
NC
C
NO
NC
C
NO
-Vdc
RTN
-Vdc RTN
R
E
M
O
T
E
V
I
S
U
A
L
A
U
D
I
B
L
E
External
Alarm
Device
External
Alarm
Device
Fig. 5: Alarms

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High-Power GMT
Series Fuse Panel
1.1.2.2 Power-Line Noise Filter
The filter characteristics under load are such that high-frequency transients are suppressed below effective
interference levels for telecommunications equipment used with the panel. With this filter option, the maximum
bus current is 75A.
1.2 Inspection
Please read these instructions carefully before beginning installation. If you need assistance, call Amphenol
Network Solutions Technical Support at 509.926.6000 or email us at [e-mail].
Inspect equipment after unpacking and compare it to the packing list.
Immediately report any shipping damage, defects or missing parts to Amphenol Network Solutions at
509.926.6000. Keep all documentation that comes with your shipment.
Amphenol Network Solutions is not liable for shipping damage. If the product is damaged, notify the carrier and
call the Amphenol Network Solutions Customer Service Department at 509.926.6000 for further recourse.
NOTE: For service or warranty information, please visit the “Support” section of amphenol-ns.com, email us at
[e-mail] or call us at 509.926.6000.
1.3 Installation Consideration
•Elevated Operating Ambient Temperature: If you install the rack in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment may be greater than room
ambient. Take care to install the equipment in an environment compatible with the maximum operating
temperature.
•Reduced Air Flow: Maintain the amount of air flow required for safe operation when installing the
equipment in a rack.
•Mechanical Loading: Ensure mechanical loading is even to prevent hazardous conditions.
•Circuit Overloading: Overloading circuits may affect your overcurrent protection and supply wiring. Use
equipment nameplate ratings.
•Circuit Breaker: Unit should be protected by listed circuit breaker or branch-rated fuse rated maximum
75A (for 60A feeds) and maximum 125A (for 100A feeds).
•Reliable Earthing: Maintain reliable earthing of rack-mounted equipment. Pay attention to supply
connections other than direct connections to the branch circuit (e.g., use of power strips).
•Disconnect Device: Incorporate a readily accessible disconnect device in the building installation wiring.

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Series Fuse Panel
1.4 Installation Procedures
ALERT! Install this product within a restricted access location where access is through the use of a tool,
lock and key, or other means of security and is controlled by the authority responsible for the location.
Only qualified personnel may install and maintain this product.
ALERT! Verify all connections meet requirements specified in local electric codes or operating company
guidelines before supply power. Protect this equipment with a fuse or breaker sufficient to interrupt
power levels specified under Electrical Specifications, on page 6.
ALERT! Each panel is tested at the factory. Amphenol Network Solutions recommends you perform the
testing outlined in the following installation procedure to ensure that no damage has occurred during
shipping and handling. Both sides A and B input circuits, as applicable, need to be tested.
1.4.1 Installing the Panel
Except for dual-circuit 20/20 GMT panels, brackets are provided for either flush or extended EIA or WECO
mounting in a 19" or 23" rack. Dual-circuit 20/20 GMT panels must be mounted to a 23" EIA or WECO rack.
1. Locate an unused rack position and mount panel using four 12- to 24-thread cutting screws, washers and
star washers provided, as shown in Fig. 6.
2. Tighten the screws to 35 in/lb. (4.29 N•m).
3. Remove the see-through cover.
4. Before connecting any conductor, use a multimeter to measure the resistance between the input NEG and
POS/RTN terminals at the rear corners of the panel. Expect 500Ωor more for both Side A and Side B.
Fig. 6: Mounting dimensions

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Series Fuse Panel
WARNING! Failure to properly ground this equipment can create hazardous conditions for installation
personnel and to the equipment.
ALERT! Only use components and crimping tools approved by agencies or certifying bodies recognized
in your country or region such as Underwriter’s Laboratories (UL), TUV, etc.
5. For ground wiring, use a listed (approved) crimping tool
to attach a listed (approved), single- or dual-hole
compression lug (dual hole is highly recommended)
suitable for a #10 stud (~5 mm) on 5/8-inch (15.9 mm) \
centers onto a suitable ground wire. (Ground wire can be
up to #6 AWG for a dual-hole lug. Conductor size
depends on input interruption device.)
6. Use a coarse, nonmetallic cleaning pad to clean the
terminals and stud(s).
7. Amphenol Network Solutions recommends that you
lightly coat antioxidant on the lug, grounding screw(s)
and surrounding contacting surfaces.
8. Connect the lug to the rear panel using the #10 screw(s)
provided, as shown in Fig. 7.
WARNING! Before connecting input power cables, make sure the input power to the panel is turned off.
9. Make sure the input power is off.
10. For input wiring — wiring used as inputs to this
distribution panel:
a. Crimp dual-hole compression lugs for 1/4-inch
studs on 5/8-inch (15.9 mm) centers onto suitable
copper wires (#6 to 1/0 AWG) for NEGand
POS/RTN terminals, Feeds A and B. Lug width
must not exceed 0.52" (13.4 mm).
b. Use coarse, nonmetallic cleaning pad to clean
terminals and studs.
Fig. 7: Ground lug connection
NC
C
NO
A
B
F
NC
C
NO
PWR
ALM
Fig. 8: Compression lug connection

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Series Fuse Panel
c. Lightly coat antioxidant on lugs and input negative and positive terminals.
d. Connect the lugs to Feed A and B input terminals on back of the panel using 1/4-20 KEPS nuts and
washers provided, as shown in Fig. 8.
e. Use a 7/16-inch (12 mm) socket to tighten the lugs to 50 in/lb. (~5.5 N•m).
11. Make sure the power is off (open breaker, dummy fuse or vacant fuse holder at the power distribution unit, or
PDU) before connecting the panels’ cables to the PDU. See Warning below.
12. Make sure that only dummy GMT fuses are installed in the panel or that the GMT fuse holders are vacant.
WARNING! All inputs must be disconnected before servicing this unit.
CAUTION! For a panel with an input noise filter, reversing input cables between positive and negative
terminals could result in damage to the panel. Double check before proceeding to ensure that the NEG
and POS/RTN feeds from the PDU are cabled to the proper terminals.
13. Enable the fuse or breaker at PDU (90A or 125A max., with or without the noise filter feature, respectively) to
turn on Side A of the panel.
14. Check voltage and polarity at the input connectors of the panel. Also, check:
•The A POWER LED on front of the panel turns on (green)
•The FAIL ALARM LED turns green
•The B POWER LED must remain red
•On rear of the panel, with A POWER lit (normal operation) — but with B POWER LED off (failure
operation) — test power-fail relay:
•Test across remote (R), visual (V) and audible (A) pins. When testing:
oExpect an open circuit (∞Ω) between Terminals Cand NC
oExpect continuity (0Ω) between Terminals Cand NO

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Series Fuse Panel
15. Repeat steps 12 and 14 for Feed B and observe that B POWER LED turns green. Also, across all sets of
alarm pins:
•Expect continuity (0Ω) between Terminals Cand NC
•Expect an open circuit (∞Ω) between Terminals Cand NO
16. For output wiring, do either of the following:
•If using lugs, strip off 3/8-inch (~10 mm) of insulation from one end of the copper output wires and then
crimp on the ring or forked, single-hole lugs, as required by NEC. (Screw terminals will accommodate
lugs for up to 10 AWG.)
•If using bare wire, strip off 5/8-inch (~15 mm) of insulation. (Stranded wires should be tinned.)
NOTE: Output wires must be rated at or above the amperage rating of the GMT fuse. For example, use
no smaller than #14 AWG output wiring for 15A output fuses. Do not exceed 12A continuous load for a
15A fuse.
ALERT! GMT fuses have a small inherent electrical resistance resulting in a small inherent power loss.
For this reason, the GMT fuse manufacturer recommends that the load for GMT fuses up to and including
7.5A not exceed 80% of the fuse rating and that the load for GMT fuse sizes 10A and 15A not exceed 70%
of the fuse rating. For example, the load for a 15A GMT fuse should not exceed 10.5A (15A x .70 = 10.5A).
Total load for all fuse outputs on each side must not exceed 100A for a panel.
17. Lightly coat antioxidant on lugs, wires and output negative and positive terminals before connecting lugs/wires
to outputs. (NEC specifies only one lug/wire and load for each output terminal.
18. Tighten the screws to 6.5 in/lb. (~0.75 N•m).
19. Connect other end of output wires to load.
20. Use pull-out designation card at front of the panel to record outputs, as specified by operating company
standard operating procedures.
21. Make sure inputs at loads are disabled by removing all power cards or all input fuses at load equipment.
NOTE: Always follow recommended operating company guidelines when disabling load equipment.

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WARNING! Use only UL-listed circuit breakers or UL-recognized component secondary protection
devices.
22. Insert the proper sizes of GMT fuses in the designated fuse holders using the designation card to identify
circuits. If applicable, install color-coded designation pins to match the fuses.
23. Check the voltage and polarity at input of loads.
24. After all the designated GMT fuses have been installed, check that the FAIL ALARM LED is still green.
Again, test the alarm relay contacts at the R, V, A, F ALM pins on the rear of the panel. As before:
•Expect continuity (0Ω) between Terminals Cand NC
•Expect an open circuit (∞Ω) between Terminals Cand NO
25. If available, replace one of the fuses with a blown fuse and check that the FAIL ALARM LED changes to red.
Check the R, V, A, F ALM pins again:
•Expect an open circuit (∞Ω) between Terminals C and NC
•Expect continuity (0Ω) between Terminals C and NO
26. When finished, re-install the operable fuse.
27. If desired, wire wrap the remote external audio/visual alarm indicator wires (solid copper wires, #22 to #18
AWG) to the alarm terminals.
28. One by one, re-enable the load equipment and verify proper operation.
29. Re-install the terminal cover.
1.4.2 Replacing the Alarm Board
If the alarm LEDs or other alarm functions are not operating
properly, you may remove the alarm circuit board and
replace it at the front of the fuse panel.
It is not necessary to remove power or otherwise take the
fuse panel or the equipment it is feeding out of service to
perform alarm board replacement.
Contact the factory for a replacement alarm board. (See
“Parts & Accessories” below.) When replacing an alarm
board, ensure that the keyed connector at the rear wall of
the panel mates properly with the new board.
Plastic clips hold
alarm board to
front of the panel
Fig. 9: Alarm board

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Series Fuse Panel
1.5 Parts & Accessories
Table 2 – Alarm Boards
Item
Description
Part Number
Alarm board for single circuits
Standard
16188F03
Alarm board for dual circuits
Standard
400817
Table 3 – GMT Fuses
GMT Fuse
Part Number
Part Number for Colored Designation Pin
.18A Yellow (YEL)
130781
102435-21
1/4A Violet (VIO)
100151
102435-2
1/2A Red (RED)
004001
102435-5
3/4A Brown (BRN)
004008
102435-7
1A Gray (GRY)
100991
102435-8
1-1/3A White (WHT)
004006
102435-9
1-1/2A White/Yellow (WHT/YEL)
004011
102435-10
2A Orange (ORN)
004002
102435-11
2-1/2A White/Orange (WHT/ORN)
130783
102435-12
3A Blue (BLU)
004012
102435-13
3-1/2A White/Blue (WHT/BLU)
130782
102435-14
4A White/Brown (WHT/BRN)
004013
102435-15
5A Green (GRN)
004014
102435-16
7-1/2A Black/White (BLK/WHT)
004010
102435-17
10A Red/White (RED/WHT)
004015
102435-18
12A Yellow/Green (YEL/GRN)
102287
102435-19
15A Red/Blue (RED/BLU)
102288
102435-20
For dummy fuses order 132748. For GMT safety (splash/splatter) covers order 116915.
Table 4 – Dual-Hole Compression Lug Part Numbers vs. Input or Ground Wire Size for 1/4-inch Studs on
5/8-inch Centers
1/0 AWG
#2 AWG
#4 AWG
#6 AWGa
#8 AWG
#10 AWG
T & B
—
—
54206
(Die Code 29)
54205
(Die Code 24)
54850BE
(Die Code 21)
—
Burndy
YA25L2NT14E1
(Die Code 12)
YA2CL2NT14
(Die Code 10)
YA4CL2TC14
(Die Code 8)
YA6CL2TC14
(Die Code 7)
YA8CL2TC14
(Die Code 9)
YAV102TC14
Panduit
—
LCDN2-14A-Q
(Die Code 33)
—
LCD6-14A-L
(Die Code 24)
LCD8-14A-L
(Die Code 21)
LCD10-14A-L
a. #6 AWG lug can be used for dual-hole grounding as well.
Table 5 – Single-Hole Ring Lug (Insulated Barrels) with Part Numbers vs. Output Wire Size (For #6
Panhead Screws)
#22-18 AWG
#22-16 AWG
#16-14 AWG
#12-10 AWG
AMP
51863
51863
320619
329697
Panduit
PN18-6R-M
—
PN14-6RN-M
—

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High-Power GMT
Series Fuse Panel
1.6 Service
High-power GMT fuse panels do not require special preventive maintenance.
WARNING! All inputs must be disconnected before servicing this unit.
1.7 Block Diagram
Fig. 10: Power, Battery Return and Fuse Circuit

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Series Fuse Panel
1.8 1RU Dimensions
NOTE: Dimensions are in in. [mm].
0.27 [6.8]
Max. lug width is 0.54 in. [13.7]
0.62 [15.9]
1/4
-20 studs & KEPS nuts
0.62 [15.8]
0.33 [8.5]
10-32 Panhead screws are included
Max. lug width is 0.67 in. [17.0]
0.26 [6.6]
6-32 Panhead screws
REAR VIEW
(ROTATED)
Transparent Cover
2.27 [57.7]
9.63 [244.5]
0.12 [3.0]
0.75 [18.9]
3.0000
Panels may be flush
mounted or extended by
up to 3.0-in. (76 mm) in
0.5-in. (12.7 mm)
increments.
TOP VIEW
1.00 [25.4]
1.25 [31.7]
1.75 [44.5]
17.00
[431.8]
19.00
[482.6]
23.00
[584.2]
FRONT VIEW
Fig. 11: 0HPGMT05R dimensions

18
Amphenol Network Solutions
All rights reserved. 12.20.19 130316-8
509.926.6000 — amphenol-ns.com
High-Power GMT
Series Fuse Panel
1.9 2RU Dimensions
Amphenol Network Solutions assumes no liability for the application or use of these products. Neither does
Amphenol Network Solutions convey any license under its patent rights or the patent rights of others. This
document and the products described herein are subject to change without notice.
NOTE: Dimensions are in in. [mm].
7.50 [190.5]
0.12 [3.0]
Transparent cover over terminals only
(Bottom half of front)
2.44 [61.9]
2.50 [63.5]
Panel may be
flush mounted or
extended by up to
2.5 in. (63.5 mm)
in 0.5 (12.7 mm)
increments.
TOP VIEW
0.98 [25.0]
23.00 [584.2]
19.00 [482.6]
17.00 [431.8]
2.95 [75.0]
3.48 [88.4]
0.27 [6.8]
0.62 [15.9]
1/
4
-20 studs & KEPS nuts
Max. lug width is 0.54 in. [13.7 mm]
0.33 [8.5]
0.62 [15.8]
Max. lug width is 0.67 in. [17.0]
10-32 Panhead screws
0.26 [6.6]
6-32 Panhead screws
FRONT VIEW
Fig. 12: 0HPGMT12R dimensions

19
Amphenol Network Solutions
All rights reserved. 12.20.19 130316-8
509.926.6000 — amphenol-ns.com
High-Power GMT
Series Fuse Panel