[[Image:UMArt7.jpg|thumb|right|250px|A Firstborn Space Marine wearing [[Power Armour]]]]'''Power Armour ''' is worn primarily by the [[Space Marine]]s, [[Sisters of Battle]], [[Adeptus Custodes]] and the [[Chaos Space Marine]]s. It is a completely enclosed suit of armour, made of thick [[ceramite]] plates. The armour would be heavy and cumbersome to wear but for the electrically motivated fibre bundles within the armour , as well as the methods of direct interface such as the [[Black Carapace]], that replicate the wearer's movement and enhance his/her strength.{{Fn|1}}{{Fn|23}}[[Image:UMArt7.jpg||thumb|330px|A Firstborn Space Marine wearing [[Power Armour]]]]

* {{Mainmain|Space Marine Power Armour}}[[Space Marine Power Armour]] is an extraordinarily sophisticated defensive system which combines huge resistance to physical damage with a sensory array and sealed environment which protects its wearer from the ravages of the void and alien atmospheres. Integrated with the armour are networks of electro-motivated fibre bundles which mimic and augment the muscular strength of the wearer, as well as connection cables which hook up to the [[Black Carapace]] implant of a [[Space Marine]]. The true genius of the design, however, lies in its close integration with the already superhuman physiology, senses and reflexes of the Space Marine within. Working in concert, armour and Astartes together become a weapon without equal.{{Fn|3}}{{Fn|23}}

* {{Mainmain|Sisters of Battle Power Armour}}The [[Sisters of Battle]] use a version of power armour designed for the [[human]] shape and size, known as Sororitas Power Armour. Sisters of Battle do not have the same [[Black Carapace]] as [[Space Marines]] do, as such some patterns of their power armour are not built with direct interface in mind, thus lacking the same benefits to strength and support systems integration.{{Fn|2a}} Other Sisters make use of armour that do benefit from direct connection via the usage of [[Imperial_bionics#Interface_Port| Interface Ports]].{{Fn|21}}{{Fn|25}} It is also known that some sisters, such as the [[Hospitaller]], make use of [[Imperial_bionics#Mind_Impulse_Unit| Mind Impulse units]], which may offer another avenue of controlling power armour.{{Fn|22}}{{Fn|19c}}

* {{Mainmain|Custodes Power Armour}}

* {{Mainmain|Vratine Armour}}

Power armour is also favored favoured for use by agents of the [[Inquisition]] and those individuals wealthy enough to afford one, such as [[Rogue Traders]]. These suits of armour enhance the user's strength, allow for operation in hostile environments, and include auxiliary systems such as [[vox]]-links and auto-senses. Like the [[Adepta Sororitas]] though, the those who lack of a form of direct interface such as [[Black Carapace]] means these users cannot fully interface with their these patterns power armour and so some patterns are not built for such interface, and these users do not enjoy the same strength enhancements and other advanced support systems typical to Astartes power armour.{{Fn|22a}} However, some Inquisitors such as [[Amberly Vail]] do wear bodygloves that connect to dermal [[Imperial_bionics#Interface_Port| Interface Ports]] that mimic the Black Carapace, in the same manner as the some Sisters of Battle.{{Fn|20}}{{Fn|21}} An alternative method of interface with Power Armour also exists via [[Imperial_bionics#Mind_Impulse_Unit| Mind Impulse units]], eschewing direct physical connection with wireless control of power armour.{{Fn|22}}{{Fn|19c}}

A variant of standard power armour, it features increased personal protection at the cost of agility, with huge plates of [[Plasteel]] covering the flatter areas of the body. Exposed servo-mechanisms run along the legs and arms and elaborate bracing runs across the spine. The helmet is small by comparison and the gauntlets are unwieldy to the point where basic actions beyond wielding a weapon is impossible.The power cell system in the rear has several thermal fins protruding to shed away excess heat. Ranks of power cells mounted on the rear provide 12 hours of continuous operation before recharging is needed, but require a day of recharging after each prolonged use. The suit is also a fully enclosed void suit and incorporates an inbuilt [[auspex]], good craftsmanship photo-visors, an incorporated vox, and a pair of recoil gloves. If the suit becomes unpowered, vents open automatically in the helmet to ensure the wearer does not suffocate.{{Fn|5}}

'''Ignatus pattern''' power armours are individuality crafted for representatives of the [[Inquisition|Holy Inquisition]]. Not as durable as Adeptus Astartes power armours, the Ignatus-pattern is of a better design than those sold to nobles[[noble]]s, [[Rogue Trader]]s and other agents of the Imperium.{{Fn|17}}

'''Ignatus''' power armour is made of thick [[Ceramite]] armour plates and incorporated electro-muscles so the user can even use the power armour in the first place. The optional helmet protects the wearer from toxic gasses, allows the wearer to breathe underwater, and even survive in vacuum as long as the suit has power. The helmet has photo-visors so the user can see in the dark and an automatically closing visor renders blind-grenades useless against the wearer. These devices can be controlled by speaking to the armour’s machine spirit, or the wearer can commune with his armour directly if they have a cerebral plug, MIU, or similar device. It is also possible to use a backpack for the suit which acts as external power-source. With this power-backpack the wearer can use his armour for five continuous days in battle conditions.{{Fn|17}}

This type of power armour is worn by the tech-priests of the Magos Militant and the [[Enginseers]] seconded to the [[Imperial Guard]]. Each set of dragon scale is individually hand-forged from adamantine and ceramite plating and woven with prayers of permanence and micro-etched with fractal incantations of defensedefence. While offering protection of the finest powered armour, and augmenting the wearer's strength, dragon scale’s greatest advantage is that it is designed to interface directly with the tech-priest’s cybernetic body and draws its power from his potentia coil, never needing to be recharged while worn. The suit's systems include a photo-visor and a respirator. However, the user must have a cybermantle and potentia coil in order to use this type of power armour.{{Fn|4a}}

** {{Mainmain|Arkan Confederates Armour}}Used by the [[Imperial Guard]]'s Arkan Confederates' Steamblood Zouaves. Stormsuits are powered exoskeletons covered in high quality and resilient [[carapace armour]].{{Fn|9}}

*{{Mainmain|Exo-Armour}}

* {{Mainmain|Armour of the Order}}

The civilization civilisation known as the [[Auretian Technocracy]] used a model of power armour for its "Brotherhood" order of soldiers. Each suit of power armour was fully enclosed and coloured a gleaming silver with red/black heraldry on their pauldrons. The power armour was noted as being so similar to Astartes power armour that the release catches on the helmet were in the same location. Unlike Astartes power armour, the Auretian Technocracy's power armour did not require the use of a black carapace, and its wearers were not gene-enhanced. These suits were the product of a still fully functional STC that the Technocracy possessed, thus while the Brotherhood numbered in the millions, they were all armoured with this power armour.{{Fn|11}}

*{{Endn|[2}}]: [[Rogue Trader Rulebook]], :**{{Endn|2a}} pg. 139**{{Endn|2b}} pg. 271

*[19]: [[Warhammer 40,000: Rogue Trader]]<**{{Endn|19a}} pg. 139**{{Endn|19b}} pg. 144**{{Endn|19c}} pg. 290*{{Endn|20}}: [[Duty Calls (Novel)]], Chapter Thirteen Pg. 189*{{Endn|21}}: [[Champions, All (Short Story)]], Chapter Three Pg. 52*{{Endn|22}}: [[The Book of Martyrs (Anthology)]], ''The Martydom of Sister [[Ishani]]'', Chapter One, Pg. 21*{{Endn|23}}: [[Warhammer 40,000: Compendium]] ''Implants'' pg. 9*{{Endn|24}}: [[Necromunda: Outlanders Rulebook]] pg. 45*{{Endn|25}}: [https://web.archive.org/web/20190729162618/https://www.warhammer-community.com/2019/07/22/battle-sister-bulletin-part-12-repentgw-homepage-post-3/ Warhammer Community: Battle Sister Bulletin – Part 12: Repent! (saved archive page, dated 7/19/2019)] (last accessed 3/22/div>2025)