The Amphenol Network Solutions 240GT54/nrg240GT54 combination fuse panels are 240A dual-feed and provide 5/5 GMT fuse positions and 4/4 TPA fuse or circuit breaker positions. Our 240GT54/nrg240GT54 panels feature ±12/±24/±48V operating voltages to serve both legacy and “next-gen” network applications. Engineered into a standard 1RU footprint, with circuits that support up to 20A GMT fuses and 50A TPA fuses or 60A breakers in each position, providing ample capacity for distribution to a broad range of components. The panel is available in standard terminal block outputs or connectorized outputs.
This platform provides front access to alarm enable/disable switch configuration for uninstalled TPA fuse or breaker locations. Also featured are front LED indicators for power/fuse alarms, monitoring status, rear connections for form C relay alarms, and optional nrgSMART connections. Each of the 240A feeds provide power for up to five GMT and four TPA or breakers output positions. The panel includes removable 1RU TPA fuse holders. These 1RU TPA fuse holders feature an ergonomic front grip for easy removal, sliding top cover to protect the fuse from above, and red alarm plunger to indicate a failed fuse. Circuit breakers are an optional accessory and can be installed with a protective cover to protect against unintended on or off switching. Circuit breaker covers are included with all panels. Field replaceable GMT fuses are available from 18/100A to 20A. TPA fuses are available from 5A to 50A per position. Breakers are available from 5A to 60A per position. The panel supports universal voltages (±12VDC to ±48VDC).
Primary Benefits
Voltage range (nominal voltage) | ±12VDC, ±24VDC, and ±48VDC |
Max. input load rating | 240A @ 45°C per panel (De-rated to 160A @ 65°C) |
Short circuit withstand rating | 5000A |
Nominal power loss at full load | Less than 45W per side @11,520W full load per side (240A x 48V); |
Percentage of full power dissipation at nominal voltage | Less than 0.5% |
Max. input interrupt device | 125% of panel rating (for 240A rated feeds) |
Optional (Standard and -SC Versions): Vertical input terminal studs (with Keps nuts and flat washers) for dual-hole compression lugs | Two pairs of 3/8-16 studs on 1" centers per terminal [max. lug width of 1.15" (29.2 mm)]. Torque nut (using 9/16" or 15 mm socket) to 150 in/lb. (~17 N•m), max. |
Optional (-C Versions): Horizontal input terminal landings (with Keps nuts, flat washers, and bolts) for dual-hole compression lugs | Two pairs of 3/8” holes on 5/8”-1" centers per terminal [max. lug width of 1.5" (38.1 mm)]. Torque bolt and nut (using 9/16" or 15 mm sockets) to 150 in/lb. (~17 N•m), max. |
Input wire size | 2/0 AWG to 350 MCM |
Grounding: | Specifications: |
Earth GND terminal bolts (with spring washers and flat washers) for dual-hole compression lug | Three sets of 1/4-20 threaded holes on 5/8" centers. [max. lug width of .50" (12.7 mm)]. Torque bolts (using 7/16" or 12 mm socket) to 50 in/lb. (5.5 N•m), max. |
Ground wire size | #14 AWG to #4 AWG |
Outputs: | Specifications: |
Output fuse | 20A GMT fuse 50A TPA fuse 60A circuit breaker |
Output load | 16A continuous GMT fuse 40A continuous TPA fuse 48A continuous circuit breaker |
Minimum short circuit interrupt rating | 5000A |
Optional (Standard Versions): Terminal blocks, single-hole compression lugs | 10, #6-32 screws [max. lug width of .32" (8.1)]. Torque screw to 8 in/lb. (.9 N•m), max. GMT fuse 8, #10-32 screws [max. lug width of .50" (12.7)]. Torque screw to 20 in/lb. (2.3 N•m), max. TPA fuse or circuit breaker |
Optional (Standard Versions): Output wire size, single-hole compression lug | #22 AWG to #6 AWG, GMT fuse #14 AWG to #4 AWG, TPA fuse or circuit breaker |
Optional (-C and -SC Versions): Connectors (purchased separately) | 10, P24 connector plugs, latching, safe touch, GMT fuse 8, P40 connector plugs, latching, safe touch, TPA fuse or circuit breaker |
Optional (-C and -SC Versions): Output wire size, connectors | #20 AWG to #10 AWG, GMT fuse #14 AWG to #6 AWG, TPA fuse or circuit breaker |
GMT fuses | Cooper Bussmann and Littelfuse |
TPA fuses | Cooper Bussmann |
Circuit breaker | AIRPAX 1U Series |
Alarms: | Specifications: |
Alarm relay contacts | 2A @ 30 VDC; 0.6A @ 60 VDC |
Max. alarm card power rating | @12V: 18mA (0.22W) @24V: 20mA (0.48W); @48V: 30mA (1.44W) |
Alarm wire size | #24 AWG, typical (#26 to #20 AWG) |
Terminals | Wire wrap or mates with TE Connectivity 3-640428-3 |
Dimensions: | Specifications: |
240GT54/nrg240GT54 | Height: 1.75" (44 mm) Depth: 13.5" (344 mm) Width: 17" (432 mm) without brackets 19” and 23” brackets included with panel |
240GT54-C/nrg240GT54-C | Height: 1.75" (44 mm) Dephth: 18.7" (475 mm) without tie bar 21.9" (557 mm) with tie bar Width: 17" (432 mm) without brackets 19” and 23” brackets included with panel Tie bar included with panel Cable-end connectors not included with panel |
240GT54-SC/nrg240GT54-SC | Height: 1.75" (44 mm) Depth: 13.5" (344 mm) without tie bar 17.0" (432 mm) with tie bar Width: 17.0" (432 mm) without brackets 19" and 23" brackets included with panel Tie bar and cable-end connectors not included with panel |
Compliance: | Specifications: |
UL | Listed |
NEBS | Level 3 |
Voltage Sensor (nrgSMART model only): | Specifications: |
Sensor accuracy | -19.99 to +19.99V: ± 0.3V -20V to -60V: ± 0.1V +20V to +60V: ± 0.1V |
Voltage measurement range | -60 to +60 VDC |
NOTE: • Voltage measurement may be slightly different than at input terminal blocks due to the voltage drop within the panel. • Sensors are factory calibrated and do not require user adjustment. | |
Current Sensor (nrgSMART model only): | Specifications: |
Precision / accuracy
| ±5% precision, ±0.25A accuracy Example: 40A current, will measure 40A ± (40A*5%) ± 0.25A = 40A ± 2.0A ± 0.25A = 37.75A to 42.25A |
Communication (nrgSMART model only): | Specifications: |
nrgOS minimum required version | nrgOS 4.1.0 |
nrgNET communication protocol | Proprietary serial protocol used to communicate between panels and controller |
nrgNET connector | Removable 5-pin connector with screw down terminals |
nrgNET connector functions | nrgNET IN from the Controller or upstream nrgSMART panel nrgNET OUT to downstream nrgSMART panel |