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Phanteks Eclipse P400A D-RGB Gaming Case - Black

CCL Code: CAS3737
Manufacturer Code: PH-EC400ATG_DBK01
| Manufacturer: Phanteks
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black
  • Phanteks Eclipse P400A D-RGB Gaming Case - Black

Key Features:

PSU not included
Max MB Size: E-ATX
2 x 2.5", 2 x 3.5" HDD Bay(s)
Tempered Glass


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Colour Options:


The Phanteks Eclipse P400A breathes performance with its full metal mesh front panel. Thanks to engineering improvements we have been able to create an Ultra-Fine Performance Mesh that brings the best possible performance while keeping dust from entering the system.

Strength & Performance

Full-Metal Mesh Front Panel

The single-piece front panel is made from an Ultra-Fine Steel Mesh. This mesh catches dust, adds structure and strength, and is part of the P400A's seamless design.

Improved Airflow

The P400A chassis has improved airflow to keep your system cool. The optimised High Air-flow Mesh Front Design offers maximum cooling performance.

Integrated Digital-RGB Lighting and Expansion

The integrated Digital-RGB lighting can be easily controlled with the Mode and Colour buttons. The Digital-RGB Controller can also be expanded and synced to a compatible motherboard.

Cooling Capacity

The Eclipse P400A has a range of possible fan and radiator locations up to 360mm for both 120mm and 140mm fans.

Storage Capacity

The P400A supports 3 x 3.5" HDDs and 2 x 2.5" SSDs out of the box with easy to use trays and vibration dampening. There is space for an additional four drives with the optional PH-HDDKT_02 brackets.


User Controls

User Controls Power
D-RGB Mode
D-RGB Colour


Internal Expansion Bays 2 x 2.5"
2 x 3.5"


Expansion Slots 7 x Full Height


USB Ports 2 x USB 3.0
Headphone Ports 1 x 3.5mm Jack
Microphone In Port 1 x 3.5mm Jack


Cooling System Front: Supports 3 x 120mm or 2 x 140mm fans (3 x 120mm D-RGB fans included)
Top: Supports 2 x 120mm or 140mm fans
Rear: Supports 1 x 120mm fan
Power Supply ATX Power Supply supported


Form Factor Mid Tower Case
Case Colour Black
Material Powder Coated Steel
Tempered Glass
Motherboard Compatibility E-ATX
Width 210 mm
Depth 470 mm
Height 465 mm
Weight 7 kg


Warranty 5 Years

Key Features

Firewire No
Main Colour Black
Case Type Tower
USB 3.0 Support Yes
Case Form Factor Mid Tower
Power Supply Included No
Optimised for Gaming
80Plus Rated No
PSU Form Factor ATX
Display Model in Showroom No
Internal 3.5" Bay 2
Internal 2.5" Bay 2
Micro-ATX Yes
Cooler Height 160 mm
Built-in Card Reader No
USB Type-C Support No
Front HDMI No
Side Panel Type Tempered Glass
GPU Length 420 mm
PSU Depth 270 mm
Front Audio Type Separate
Maximum Motherboard Size Supported E-ATX

Item Details

Manufacturer Phanteks
Manufacturer Code PH-EC400ATG_DBK01
EAN 0886523301646
UPC 886523301646
Condition New

Warranty Information

Warranty 5 Years

Manufacturer Information

Manufacturer Phanteks
Manufacturer Code PH-EC400ATG_DBK01
Questions and Answers

Do you have you a question about the Phanteks Eclipse P400A Mid Tower E-ATX Digital RGB Case in Black with Tempered Glass, 3x DRGB Fans?

Q: how do u change the colours of the RGB fans ?
Answer by Website User on 9th June 2021
You will either need to set them up to work with the motherboard or the button on the case. - Kristian N
0 customers found this answer helpful.
Post Answer
Q: Which fan do I need to purchase for an exhaust at the rear which matches please ?
Post Answer
Q: Do you still have this case in stock?
Answer by Website User on 14th April 2020
At this date we currently do not have these in stock in our warehouse. -MR
1 customer found this answer helpful.
Post Answer
Q: How long does it take to get this case in
Answer by Website User on 18th February 2020
We have over 20 in stock currently. - Kristian N
0 customers found this answer helpful.
Post Answer
4.9 / 5 24 reviews


10 months ago

Maybe the best case I have ever owned. Build quality is great and the cooling options are excellent as well. Out of the box setup works fine as is but I added additional cooling but this really wasn't needed. Cable management on this case was very easy and there are plenty of SSD and HDD mounting options in this case. The RGB on the case fans provided is also a nice bonus and colour schemes are pretty good. If you read this far then just buy it.....its totally worth the money.

Harry Thomas

11 months ago

Great case, comes with 3 pre installed fans you can connect to you motherboard, comes with all the screws and wires you need, many of which are already placed to the functioning of the case. The tempered glass looks good and there is plenty of space!

Gideon Fernandes

May 2021

Purchased this from CCL at 83. Good case for the price espicially the cooling performance. This case's MESH design allows good air flow with minimal dust build up which allows your components to reach their maximum potential. The exceptional cooling performance and the cases decent build quality for the price is amazing. LOVE IT. Now this is a note for new buyers, You need to connect the sata power to turn on the LED's. Took me time to figure that one as its not mentioned in the cases manual.


March 2021

This is a great looking case that adds quality to any build. The thermal cooling ability is greatly enhanced by the free flow mesh in the front panel complemented by the 3 fan rgb system


March 2021

Decent case for the price. 3 RGB fans at the front which i can daisy chain with more fans and control them from the case. Decent build quality and nice cable management. Would recommend

Mr Jonathan Tharp

February 2021

The mid-range case for a small build good value


February 2021

Good Air Flow, near silent operation and 3 rgb fans for less than 90 quid is a bargain.

Thomas McConnachie

February 2021

Straightforward to build in once I'd figured out the DRGB headers.

Callum Laird

January 2021

Pretty good price for a case that looks great, has great build quality, amazing airflow and comes with 3 LED fans preinstalled. Good notches/space/areas to pass cables through and secure them to the case with zip ties. Would recommend.


January 2021

Great case, RGB looks brilliant


January 2021

Cheap and high-quality design allowing for great airflow.


December 2020

Good temps. Great looking. Great value. Especially with the fans included


December 2020

With the P500a pretty much out of stock everywhere. I opted for the P400A DRGB, and what I can say is. Go for it! What a pleasure to build in, managed to fit my push pull system 360 rad in the front with a little work on taking the top in. Quality is top notch as per Phanteks standard, pity not plastic screw box like on the higher models... Cable management is great for your rear panel, temps in the case are excellent! Perhaps a GPU Gromit on the PSU shroud would be welcomed for routing cables down there. But otherwise I'm just nit picking! Overall a Phantastic case! ;)

martin burniston

December 2020

Dropped my CPU temps down by 10C from my old case, loads of room and easy to build in, fans were easy to set up and look much better in real life and I can control them through aura sync

Jolly Jamma

July 2020

Excellent value for money. Great airflow. Great looks. Cons - lack of usb type C front header, ARGB motherboard connector doesnt work well for my X570 board. Very pro - you can run the fans at full speed without RGB by unplugging the 12v power but keeping the fans connected to the motherboard

Andy B

April 2020

Bought this case for my first build. Couldn't be happier with it. Feels sturdy and well built, looks good and provided me with everything I needed. Lots of space in the case for different hardware/expansion. Also found it easy to route the various cables in the hidden side of the case. The provided velcro straps help to keep cables neat, and there's lots of 'poke through' holes giving access to the motherboard. Glass side panel looks good, fits perfectly onto the case, and has 4 easy to use hand screws keeping it in place. The front mesh looks good, though feels robust as well. Easy to remove and clean as dust does collect on the front panel. Provided fans look good. In a quiet room, they can be heard but are drowned out with music playing. All in all, very good case. Highly recommended.

Russell Sayers

April 2020

Great case for ease of build and thermals. Only my second build and was very easy to accomplish in this case. Thermals are great (dropped 10c from my bitfenix nova), nice rgb fans that aren't too intrusive when playing in a darker enviroment. Only slight issue is dust as yhe front mesh allows some dust in. Looking to fix this with a ram up in positive pressure and a change to laminate flooring from carpet! Highly recommend the case and would purchase again.


April 2020

Installation slightly unclear due to very limited documentation, but this is manageable over time. Slightly scuffed on some plastic parts such as the front bumper with the RGB controls. Cable management very satisfactory. Very good air flow.


March 2020

Nice Large case, easy to work in , good cable management in rear.


February 2020

Wanted the non RGB one but that was out of stock but this one is also good, the 3 fans pre installed reduced the amount of fans I had to purchase. Only gripe is that the RGB fan colour resets upon every boot to a random one

Peter Bystricky

February 2020

Perfect case

Suzys quilt

January 2020

Loved this case the fact the price was low and free delivery a real bonus and in quick time too. Will definitely buy from CCL again


November 2019

Incredible case. Amazing airflow which keeps cpu and gpu temps cool under load. You will need another fan for the back to help exhaust the heat as the 3 on the front only help to put air into the case. Really easy to build in this case with really good cable management.

Gustavo Marrara

September 2019

Complete case. Lots of space, good cable management... and some RGB to complete :)

Manuals and Datasheets

PDF Datasheets and Manuals

Document File type File size
Manual pdf

Phanteks Eclipse P400A D-RGB Gaming Case - Black



inc VAT

Available for delivery or collection from Tomorrow

Hurry, only 2 left!

Buying in bulk? Contact our business team here.

Order within

CCL Code: CAS3737