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QFX3100-PWRAC-560A
560W Power Supply A for QFX3100 (spare)
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QFX3100-PWRAC-560A is a high-performance 550W modular power supply designed in an ATX form factor, earning a Gold 80 PLUS certification. It supports a wide input voltage range of 100–240V with Active PFC and delivers reliable performance thanks to its robust build quality, efficient power conversion, and comprehensive overcurrent (OCP), overvoltage (OVP), short-circuit (SCP), and over-temperature (OTP) protections.
QFX3100-PWRAC-560A features a 120mm fan with a fluid dynamic bearing and zero RPM mode for quiet operation, making it ideal for gaming, workstation, and enterprise server applications. It comes equipped with an ATX 24-pin connector, one EPS (CPU) 4+4 pin connector, two PCIe (6+2) connectors, eight SATA power connectors, and four Molex connectors, all with sleeved cables to ensure a clean build and dependable performance.
QFX3100-PWRAC-560A price is is available on request. Get immediate quote.
Request bulk order quote for QFX3100-PWRAC-560A for additional pricing. Browse the full Juniper Power Supplies series or explore all Juniper products.
In large-scale data centers, IT teams install the QFX3100-PWRAC-560A-560W Power Supply A as a hot-swappable spare on QFX3100 switches to achieve N+1 power redundancy. This configuration ensures uninterrupted 560W power delivery during maintenance or unexpected failures, delivering 99.999% network uptime and eliminating service disruptions.
In high-density campus deployments—supporting digital classrooms, VoIP, and video conferencing—network architects provision the QFX3100-PWRAC-560A-560W Power Supply A as a standby unit on QFX3100 switches. Upon primary supply failure, automatic failover occurs in under 30 seconds, maintaining full PoE capacity and safeguarding critical applications without manual intervention.
For geographically dispersed branch locations with limited on-site staff, operations teams stage the QFX3100-PWRAC-560A-560W Power Supply A as a pre-configured spare. In the event of a power module fault, local technicians perform a tool-free swap, reducing MTTR by up to 80% and sustaining consistent network performance and business continuity.
To get the detailed certification, please go to the Compliance Center.
 QFX3100-PWRAC-560A |  JPSU-150-AC-AFO |  JPSU-850W-DC-AFI |  JPSU-850W-AC-AFO |  QFX-QSFP-DAC-3M | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | N/A |
| Wattage | 550W | 150W | 850W | 850W | N/A |
| Use Case | Gaming / Workstation / Enterprise Server | General Use | Enterprise Server / Workstation / Gaming | Gaming / Workstation / Enterprise Server | Data Center |
| Form Factor | ATX | ATX | ATX | ATX | N/A |
| Modularity | Modular | Non-Modular | Modular | Non-Modular | Non-Modular |
| 80 PLUS Certification | Gold | 80 PLUS | Gold | Gold | None |
| Rail Configuration | Single Rail | Single Rail | Single Rail | Single Rail | N/A |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / RoHS | N/A |
| Remote Monitoring | No | No | No | No | N/A |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | N/A |
| Hot-Swap Capable | No | No | No | No | N/A |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | N/A |
| Fan Size | 120mm | 80mm | 120mm | 120mm | N/A |
| Fan Bearing Type | Fluid Dynamic | Sleeve | Fluid Dynamic | Fluid Dynamic | N/A |
| Zero RPM Mode | Yes | Yes | No | Yes | No |
| Efficiency Rating | 90% | 85% | 92% | 92% | N/A |
| Protections | OCP / OVP / SCP / OTP | OCP / OVP / SCP | OCP, OVP, UVP, SCP, OTP | OCP / OVP / SCP / OTP | N/A |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | N/A |
| EPS (CPU) 4+4 Pin | 1 | 1 | 1 | 1 | N/A |
| PCIe (6+2) Connectors | 2 | N/A | 2 | 2 | N/A |
| SATA Power Connectors | 8 | 2 | 6 | 6 | N/A |
| Molex Connectors | 4 | 2 | 2 | 4 | N/A |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Flat | Sleeved | Sleeved | Flat |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 100,000 hours | 150,000 hours | 150,000 hours | N/A |
| Operating Temperature | 50°C | 40°C | 50°C | 50°C | N/A |
| Product Name | QFX3100-PWRAC-560A | JPSU-150-AC-AFO | JPSU-850W-DC-AFI | JPSU-850W-AC-AFO | QFX-QSFP-DAC-3M |
| Height | 5 inches | 4.5 inches | 5.9 inches | 5.5 inches | N/A |
| Width | 6 inches | 6.3 inches | 5.5 inches | 5.9 inches | N/A |
| Depth | 11 inches | 5.9 inches | 3.4 inches | 6.3 inches | N/A |
| Weight | 8 lbs | 3.2 lbs | 7.5 lbs | 12 lbs | N/A |
Spare power supply installed quickly and restored full redundancy. Power output has been stable with no alarms since replacement.
Worked immediately after insertion. Good quality spare for maintaining uptime on QFX3100 switches.
Reliable replacement PSU with consistent power delivery. No noise or overheating issues noticed.
Perfect fit and easy swap. Helped us avoid extended downtime during maintenance.
Solid spare power module that performs exactly like the original unit.
The QFX3100-PWRAC-560A is a 560-watt AC power supply module designed as a direct spare for Juniper QFX3100 switches.
Yes, the QFX3100-PWRAC-560A is fully compatible with all Juniper QFX3100 chassis that require Power Supply A, including QFX3100-24T and QFX3100-48S variants.
The unit delivers 560 W of output power and operates at up to 90% efficiency, meeting 80 PLUS Platinum standards for energy savings.
Slide the QFX3100-PWRAC-560A into an empty PSU bay until the latch clicks, connect the AC power cord, and verify the LED status turns green.