• Black and white schematic of arista pwr-d2-3041-dc-blue 3kw dc power supply electrical panel with labeled components
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Arista

Arista PWR-D2-3041-DC-BLUE | 3kW DC Power Supply for 7800R3, Dual Input, Hot-Swap

PWR-D2-3041-DC-BLUE

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Description

The Arista PWR-D2-3041-DC-BLUE is a 3000W dual-input DC power supply designed for the 7800R3 Series modular switches. This hot-swappable 1RU power supply supports DC input voltages from -40 to -72V or 240 to 380V, providing flexible grid redundancy for mission-critical data center and service provider environments. With integrated 1+1 power redundancy and front-to-rear airflow, it ensures continuous operation and optimal cooling in high-density deployments.

Features

3000W output capacity for high-density modular chassis power requirements
- Dual independent DC input feeds for grid-level redundancy and failover protection
- Integrated Auto-Transfer Switchover (ATS) for seamless power source transitions
- Hot-swappable design enables field replacement without system downtime
- Supports both traditional -48V DC telecom power and 240-380V HVDC data center power
- Front-to-rear airflow design optimized for data center cooling efficiency
- LED status indicators for output, input A, input B, and fault conditions
- Color-coded release lever (Blue) for easy airflow direction identification
- Single internal power domain simplifies power allocation across chassis
- Compatible with N+N redundancy configurations for maximum availability
- 1RU form factor for space-efficient power delivery in modular chassis
- Variable speed internal fan for quiet and efficient thermal management
- Field-proven reliability for carrier-grade and enterprise data center applications

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Output Power: 3000W
- Input Voltage: -40 to -72V DC or 240 to 380V DC
- Form Factor: 1RU hot-swappable plug-in module
- Dual Input: Supports two independent DC power feeds for grid redundancy
- Airflow: Front-to-rear airflow for optimal cooling
- Redundancy: Integrated 1+1 power redundancy with Auto-Transfer Switchover (ATS)
- Compatibility: Arista 7800R3 Series (DCS-7804, DCS-7808, DCS-7812, DCS-7816, DCS-7816L)
- Wire Requirements: 1-2 AWG stranded copper wiring
- Connectors: M6 terminal studs with 5/8" spacing for DC input
- LED Indicators: Output status, InputA, InputB, protective earth, battery return indicators
- Handle/Release Lever: Color-coded to indicate airflow direction (Blue)
- Operating Temperature: 0°C to 40°C
- Hot-Swap Capability: Field-replaceable without system shutdown

FAQs

Q: What chassis models is the PWR-D2-3041-DC-BLUE compatible with?
A: This power supply is compatible with all Arista 7800R3 Series modular chassis, including the DCS-7804, DCS-7808, DCS-7812, DCS-7816, and DCS-7816L models. It can be used alongside AC power supplies in mixed power configurations.

Q: What DC input voltage ranges does this power supply support?
A: The PWR-D2-3041-DC-BLUE supports dual DC input voltage ranges: -40 to -72V DC for traditional telecom DC power systems, and 240 to 380V DC for high-voltage direct current (HVDC) data center deployments. This flexibility allows deployment in diverse power infrastructure environments.

Q: How many power supplies are required for redundancy in a 7800R3 chassis?
A: The 7800R3 Series supports N+N power supply redundancy. Each power supply has dual inputs for grid redundancy. The minimum number of operating power supplies depends on the chassis model and installed line cards. Arista recommends consulting the power calculator for specific configurations.

Q: Can this power supply be hot-swapped during operation?
A: Yes, the PWR-D2-3041-DC-BLUE is a hot-swappable field-replaceable unit (FRU). It can be installed or removed without powering down the chassis, provided sufficient redundant power supplies are installed and operational to support the system load.

Q: What wiring and installation requirements are needed for DC power?
A: Installation requires 1-2 AWG stranded copper wiring terminated with agency-approved compression lugs for M6 terminal studs with 5/8" spacing. Installation must comply with local and national electrical codes, and DC circuits should be de-energized before wiring. Primary ground wire size should be 1-2 AWG per power supply.

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