Amphenol Networks

300CB08 / nrg300CB08

325A Dual-Feed Circuit Breaker Panel

1RU 325A Dual-feed, 8/8 Circuit Breaker Panel

Overview

The Amphenol Network Solutions 300CB08 / nrg300CB08 circuit breaker panels are 325A dual-feed and provide 8/8 breaker positions. These panels feature ±12/±24/±48V operating voltages to serve both legacy and “next-gen” network applications. Engineered into a standard 1RU footprint, each circuit supports up to 60A breakers in each position, providing ample capacity for distribution to a broad range of components. Advanced circuit level monitoring features are available as an option. 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 breaker locations. Also featured are front LED indicators for power/breaker alarms, monitoring status, rear connections for form C relay alarms, and optional nrgSMART connections. Each of the 325A feeds provide power for up to eight output positions. Field replaceable circuit breakers are available from 5A to 60A per position. The front of the panel features a face plate designed to protect against unintended breaker on or off switching. The panel supports universal voltages (±12VDC to ±48VDC).

Primary Benefits

Amphenol Network Solutions now offers an industry-first circuit breaker panel with 600 amps continuous in only 1RU.

Coupled with the broadest voltage range in the industry (+12V, +24V and +48V) along with a hot-swappable alarm card, the 300CB08 is your only choice for a fully certified high current circuit breaker panel in 1RU.

Applications

Amphenol Circuit Breaker Panel

nrg300CB08-C Rear View

Ordering Information

Circuit Breaker Panel Part Number
325A Dual-Feed, 8/8 Panel, Vertical Inputs, Output Terminal Blocks 300CB08
325A Dual-Feed, 8/8 Panel, Horizontal Inputs, Connectorized Outputs, Standard Tie Bar (Connectors purchased separately) 300CB08-C
325A Dual-Feed, 8/8 Panel, Vertical Inputs, Connectorized Outputs (Tie Bar and Connectors purchased separately) 300CB08-SC
nrgSMART Circuit Monitoring, 325A Dual-Feed, 8/8 Panel, Vertical Inputs, Output Terminal Blocks nrg300CB08
nrgSMART Circuit Monitoring, Controller, 325A Dual-Feed, 8/8 Panel, Vertical Inputs, Output Terminal Blocks nrg300CB08-CTRL
nrgSMART Circuit Monitoring, Sensor, 325A Dual-Feed, 8/8 Panel, Vertical Inputs, Output Terminal Blocks nrg300CB08-SENS
nrgSMART Circuit Monitoring, Sensor, 325A Dual-Feed, 8/8 Panel, Vertical Inputs, Output Terminal Blocks nrg300CB08-SENS
nrgSMART Circuit Monitoring, 325A Dual-Feed, 8/8 Panel, Horizontal Inputs, Connectorized Outputs, Standard Tie Bar
(Connectors purchased separately)
nrg300CB08-C
nrgSMART Circuit Monitoring, Controller, 325A Dual-Feed, 8/8 Panel, Horizontal Inputs, Connectorized Outputs, Standard Tie Bar
(Connectors purchased separately)
nrg300CB08-CTRL-C
nrgSMART Circuit Monitoring, Sensor, 325A Dual-Feed, 8/8 Panel, Horizontal Inputs, Connectorized Outputs, Standard Tie Bar
(Connectors purchased separately)
nrg300CB08-SENS-C
nrgSMART Circuit Monitoring, Controller, 325A Dual-Feed, 8/8 Panel, Vertical Inputs, Connectorized Outputs
(Tie Bar and Connectors purchased separately)
nrg300CB08-CTRL-SC
nrgSMART Circuit Monitoring, Sensor, 325A Dual-Feed, 8/8 Panel, Vertical Inputs, Connectorized Outputs
(Tie Bar and Connectors purchased separately)
nrg300CB08-SENS-SC
Accessories (purchased separately) Part Number
1RU Circuit Breaker Puller 307491
Extra Blanking Covers (sheet of 16): to cover unused breaker positions (sheet of 16 included with panel) 149568
4 Post Mounting Bracket Kit: 22”-36” Brackets, Mounting Hardware (requires Tie Bar, -C Versions only) 307622
Tie Bar Kit: Connectorized, Rear Mount Tie Bar, Mounting Hardware (-SC Versions only) 307661
nrgSMART Temperature Sensor, ACC, 6ft nrgTemp
Replacement Components Part Number
Replaceable Alarm Card 307608
Replaceable Alarm Card, nrgSMART 307710
Replaceable Controller Board, nrgSMART 400822
Replaceable Sensor Board, nrgSMART 307607
19” Mounting Bracket Kit: 2x 19” Brackets, Mounting Hardware PMTG19
23” Mounting Bracket Kit: 2x 23” Brackets, Mounting Hardware PMTG23
Connectors (purchased separately) Part Number
P40 Connector Kit: TPA, 8-6 AWG, Plug, Retainer, 2x Contacts 150326
P40 Connector Kit: TPA, 12-10 AWG, Plug, Retainer, 2x Contacts 150325
P40 Replaceable Contact: TPA, 8-6 AWG, Single Contact 400822
Replaceable Sensor Board, nrgSMART 150333
P40 Replaceable Contact: TPA, 12-10 AWG, Single Contact 150334
Crimp Tool: 14-6 AWG, Daniels, M300BT 150793
Crimp Tool Locator: Universal, Daniels, UH2-5 150794
Contact Removal Tool: P40 Connector 150797
Single-pole Breakers Part Number
5A, standard delay, UL489 149710
10A, standard delay, UL489 149711
15A, standard delay, UL489 149712
20A, standard delay, UL489 149713
25A, standard delay, UL489 149714
30A, standard delay, UL489 150793
Crimp Tool Locator: Universal, Daniels, UH2-5 149715
40A, standard delay, UL489 149716
50A, standard delay, UL489 149718
60A, standard delay, UL489 149719

Specifications

Inputs Specifications
Voltage range (nominal voltage) ±12VDC, ±24VDC and ±48VDC
Max. input load rating 325A @ 45°C per panel (De-rated to 200A @ 70°C)
Nominal power loss at full load Less than 45W per side @15,600W full load per side (325A x 48V); 325A @ 45°C per panel (De-rated to 200A @ 70°C)
Percentage of full power dissipation at nominal voltage Less than 0.5%
Max. input interrupt device 125% of panel rating (for 325A 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
Output circuit breaker Single-pole: 60A
Output load Single-pole: 48A continuous
Minimum short circuit interrupt rating 5000A
Optional (Standard Versions): Terminal blocks, single-hole compression lugs 16, #10-32 screws [max. lug width of .50" (12.7)]. Torque screw to 20 in/lb. (2.3 N•m), max.
Optional (Standard Versions): Output wire size, single-hole compression lug #14 AWG to #4 AWG
Optional (-C and -SC Versions): Connectors (purchased separately) 16, P40 connector plugs, latching, safe touch
Optional (-C and -SC Versions): Output wire size, connectors #12 AWG to #6 AWG
Circuit breakers 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

300CB08/nrg300CB08

Height: 1.75" (44 mm)
Depth: 13.0" (331 mm)
Width: 17" (432 mm) without brackets
19” and 23” brackets included with panel

300CB08-C nrg300CB08-C

Height: 1.75" (44 mm)
Depth: 18.8" (478 mm) without tie bar
22.0" (559 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

300CB08-SC/nrg300CB08-SC

Height: 1.75" (44 mm)
Depth: 13.0" (331 mm) without tie bar
16.5” (420 mm) with tie bar
Width: 17" (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

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