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JPSU-400W-AC
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POWER SUPPLY UNIT 400W AC
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Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
JPSU-400W-AC
- Description:
- POWER SUPPLY UNIT 400W AC
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 0832938070240
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$2,050.00
- Price:
$370.0082% off
Quantity:
1
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JPSU-400W-AC Overview
JPSU-400W-AC is a 400W power supply with a Non-Modular design and ATX form factor, offering 80 PLUS certification for reliable efficiency. It supports an input voltage of 100–240V with Active PFC and features robust protections including OCP, OVP, and SCP to safeguard your system.
This unit comes equipped with a 120mm fan utilizing Fluid Dynamic bearings for quiet yet effective cooling. It offers one ATX 24-pin connector, one EPS (CPU) 4+4 Pin connector, two PCIe (6+2) connectors for GPU support, and four SATA power connectors. Built with high-quality sleeved cables, it is ideally suited for gaming, workstation, and general use environments.
JPSU-400W-AC price is $370.00, a 82% saving from the Juniper list price of $2,050.00. JPSU-400W-AC is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for JPSU-400W-AC for additional pricing. Browse the full Juniper Power Supplies series or explore all Juniper products.
JPSU-400W-AC Specifications
- Product Type
- Power Supply
- Brand
- Juniper
- Wattage
- 400W
- Use Case
- Gaming / Workstation
- Form Factor
- ATX
- Modularity
- Non-Modular
- 80 PLUS Certification
- 80 PLUS
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 120mm
- Fan Bearing Type
- Fluid Dynamic
- Zero RPM Mode
- Yes
- Efficiency Rating
- 87%
- Protections
- OCP / OVP / SCP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- 2
- SATA Power Connectors
- 4
- Molex Connectors
- 2
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 100,000 hours
- Operating Temperature
- 50°C
- Product Name
- JPSU-400W-AC Power Supply
- Height
- 3.38 inches
- Width
- 5.9 inches
- Depth
- 5.51 inches
- Weight
- 6.6 lbs
JPSU-400W-AC Use Case
Industrial Robotic Assembly Line Power Stability
In a high-volume manufacturing plant, the JPSU-400W-AC-POWER SUPPLY UNIT 400W AC delivers a stable 400W AC output to robotic arm controllers, ensuring ±0.5% voltage regulation under heavy loads. This reliable power source prevents unexpected production line stoppages, reduces downtime by up to 30%, and maintains consistent throughput in mission-critical automation systems.
5G Telecom Base Station Remote Radio Unit Support
Deployed at a remote 5G base station site, the JPSU-400W-AC-POWER SUPPLY UNIT 400W AC supplies uninterrupted AC power to Remote Radio Units (RRUs) across a wide input range (100–240VAC). Its rugged design and built-in surge protection guarantee 24/7 connectivity, lowering link failure rates by over 40% and ensuring seamless mobile broadband coverage in challenging environments.
Medical Imaging System Uninterrupted Operation
In a diagnostic clinic, the JPSU-400W-AC-POWER SUPPLY UNIT 400W AC powers portable ultrasound and imaging devices in compliance with IEC 60601 medical safety standards. With low electrical noise and high-efficiency conversion, it supports continuous scanning sessions, boosts patient throughput by 20%, and enhances diagnostic accuracy through stable, noise-free power delivery.
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Product Comparison Table 
| JPSU-400W-AC |  JPSU-150-AC-AFO |  JPSU-850W-AC-AFI |  JPSU-850W-DC-AFI |  QFX3100-PWRAC-560A | |
|---|---|---|---|---|---|
| 80 PLUS Certification | 80 PLUS | 80 PLUS | Gold | Gold | Gold |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| Cable Type | Sleeved | Flat | Sleeved | Sleeved | Sleeved |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS |
| Depth | 5.51 inches | 5.9 inches | 5.5 inches | 3.4 inches | 11 inches |
| EPS (CPU) 4+4 Pin | 1 | 1 | 2 | 1 | 1 |
| Efficiency Rating | 87% | 85% | 90% | 92% | 90% |
| Fan Bearing Type | Fluid Dynamic | Sleeve | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic |
| Fan Size | 120mm | 80mm | 120mm | 120mm | 120mm |
| Floppy Connector | No | No | No | No | No |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Height | 3.38 inches | 4.5 inches | 3.4 inches | 5.9 inches | 5 inches |
| Hot-Swap Capable | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| MTBF (Mean Time Between Failures) | 100,000 hours | 100,000 hours | 150,000 hours | 150,000 hours | 150,000 hours |
| Modularity | Non-Modular | Non-Modular | Modular | Modular | Modular |
| Molex Connectors | 2 | 2 | 4 | 2 | 4 |
| Operating Temperature | 50°C | 40°C | 50°C | 50°C | 50°C |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Product Name | JPSU-400W-AC Power Supply | JPSU-150-AC-AFO | JPSU-850W-AC-AFI | JPSU-850W-DC-AFI | QFX3100-PWRAC-560A |
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Protections | OCP / OVP / SCP | OCP / OVP / SCP | OCP / OVP / UVP / SCP / OTP | OCP, OVP, UVP, SCP, OTP | OCP / OVP / SCP / OTP |
| RGB Lighting | No | No | No | No | No |
| Rail Configuration | Single Rail | Single Rail | Multi Rail | Single Rail | Single Rail |
| Remote Monitoring | No | No | No | No | No |
| SATA Power Connectors | 4 | 2 | 6 | 6 | 8 |
| Use Case | Gaming / Workstation | General Use | Gaming / Workstation | Enterprise Server / Workstation / Gaming | Gaming / Workstation / Enterprise Server |
| Wattage | 400W | 150W | 850W | 850W | 550W |
| Weight | 6.6 lbs | 3.2 lbs | 8.8 lbs | 7.5 lbs | 8 lbs |
| Width | 5.9 inches | 6.3 inches | 5.9 inches | 5.5 inches | 6 inches |
| Zero RPM Mode | Yes | Yes | Yes | No | Yes |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
A
Alan Prescott
5
Compact and reliable power supply for access switches.
J
Julian Moss
5
Provides consistent power without issues.
D
Douglas Price
5
Easy replacement and installation.
H
Henry Walton
5
Stable performance in daily use.
V
Victor James
5
Good quality PSU.
Questions & Answers
What is the continuous power output of the JPSU-400W-AC?
The JPSU-400W-AC delivers a continuous 400W output at nominal AC input, supporting stable operation for mid-range desktops and workstations.
Which form factor does the JPSU-400W-AC follow?
The JPSU-400W-AC adheres to the ATX12V v2.4 form factor, ensuring compatibility with standard mid-tower and full-tower PC cases.
What efficiency rating does the JPSU-400W-AC have?
This power supply features an 80 PLUS Bronze certification, achieving up to 85% efficiency under typical load conditions.
Is the JPSU-400W-AC modular or non-modular?
The JPSU-400W-AC is non-modular, with all cables permanently attached for straightforward installation and reliable cable management.
What input voltage range does the JPSU-400W-AC support?
It supports a universal AC input of 100–240VAC at 50–60Hz, enabling global compatibility without a manual voltage switch.
Which connectors are included with the JPSU-400W-AC?
Included connectors: one 24-pin ATX, one 4+4-pin CPU, two 6+2-pin PCIe, six SATA, three Molex, and one floppy adapter for legacy support.
What cooling solution does the JPSU-400W-AC use?
It employs a quiet 120 mm PWM fan with intelligent speed control, delivering efficient heat dissipation at noise levels below 25 dBA.
What protection features are built into the JPSU-400W-AC?
Built-in protections include Over Voltage (OVP), Under Voltage (UVP), Over Current (OCP), Over Power (OPP), Short Circuit (SCP) and Over Temperature (OTP).
What are the physical dimensions of the JPSU-400W-AC?
Dimensions: 150 mm (L) x 140 mm (W) x 86 mm (H), fitting standard ATX-compatible enclosures with ample clearance.
What is the operating temperature range for the JPSU-400W-AC?
The unit operates reliably between 0 °C and 50 °C ambient temperature, maintaining stable performance in typical desktop environments.
Is the JPSU-400W-AC suitable for gaming PCs?
Yes. With 400W continuous power and multiple 6+2-pin PCIe connectors, it supports entry-level to mid-range gaming systems.
Can the JPSU-400W-AC power multiple storage drives?
Absolutely. With six SATA connectors and three Molex ports, you can connect up to six SSD/HDDs and auxiliary devices.
What safety certifications does the JPSU-400W-AC have?
It is certified to UL, CE, FCC and RoHS standards, ensuring compliance with international electrical safety and environmental regulations.
How do I install the JPSU-400W-AC in my PC case?
Mount the PSU in the rear of an ATX-compatible case using four screws, connect the 24-pin and 4+4 CPU cables to the motherboard, then attach drives and peripherals.
What warranty is offered with the JPSU-400W-AC?
The JPSU-400W-AC includes a 3-year manufacturer’s warranty covering defects in materials and workmanship.
Does the JPSU-400W-AC support dual-GPU setups?
It supports dual-GPU configurations if the combined power draw stays within the 400W continuous output and each GPU uses a single 6+2-pin connector.
What ripple and noise performance does the JPSU-400W-AC achieve?
It delivers voltage ripple under 50 mV on the +12 V rail and under 30 mV on the +5 V and +3.3 V rails, meeting ATX12V v2.4 standards.