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); 
240A @ 45°C per panel 

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