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
- Universal voltage (±12VDC, ±24VDC and ±48VDC) enables standardization on a single part number for multiple voltages
- Up to 60A breakers for distribution to a variety of network elements
- UL and NEBS compliant to ensure industry-standard safety and functional requirements
- Form C relay contacts provide reliable alarm connections
- Integrated designation card holder for simple circuit identification
- Fail alarm LEDs indicate breaker and power failures
- Clear, flame-retardant polycarbonate cover (94V-0) protects input and output power connections and wiring from damage
- Either vertical feed inputs and staggered output terminal blocks to facilitate waterfall cable management, horizontal feed inputs and output connectors that speed-up installation and allow cables to exit straight back
- Optional Individual Circuit Monitoring provides high accuracy, 100% passive monitoring
- Collect voltage and current for both feed and output circuit
- Collect temperature using optional nrgTEMP probes
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
- Wireless
- Central office
- Co-location
- Remote sites
- Secondary distribution
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 |