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Fallout/Fallout 2Power armor
Hardened power armor
Fallout 3T-51b power armor
Winterized T-51b power armor
Fallout: New VegasT-51b power armor
Brotherhood T-51b power armor
Fallout 4T-51 power armor
Fallout 76T-51b power armor
Fallout: BoSPower armor
Advanced power armor
Van BurenPower armor

T-51 power armor or Powered Combat Infantry Armor model T-51 was first introduced in the Battle of Anchorage.[1] Recognized as the pinnacle of mechanized protection before the Great War, the armor provided a valuable balance of protection and mobility.[1][2][3][Non-canon 1]


United States soldier in power armor

Following the successful deployment of the first operational power armor in 2067,[Non-canon 2] the T-45 power armor model, West-Tek began development on an improved model.[4] The company partnered with the United States government, and by 2069, the T-51b model served as their largest contract.[5]

The development of T-51b prototypes hastened two-fold as the T-45 models struggled in mainland China, with production models tested in combat conditions at Fort Strong in Massachusetts.[6][7][Non-canon 3] A prototype tested in September 2075 had the desired mobility and protection but landing tests proved the armor lacked stability.[6] Gyroscopic stabilizers and shock absorbers were subsequently added to rectify the situation.[6] The first production run of T-51b suits were sent to China in June 2076.[8] Word reached Fort Strong that Chinese troops were surrendering as soon as they spotted soldiers wearing T-51b, carrying 5mm miniguns, and the renewed American offensive caused Chinese supply lines to break down.[8][Non-canon 4]

In January 2077, General Constantine Chase completed the Anchorage Reclamation, using troops fielding winterized T-51b power armor as spearhead to minimize casualties.[9][10] Chase began deploying the specialized power armor which successfully pushed the Chinese back, resulting in the liberation of Anchorage, and the operation is deemed a success.[Non-canon 5][Non-canon 4] In addition to the war against the Chinese, units in T-51 were also deployed to eradicate individuals resisting the United States annexation of Canada,[11] and from January 22, 2077, onwards, to break protests on the homefront, particularly the food riots.[Non-canon 6] After the Great War, the T-51 was utilized by various wasteland factions including the Brotherhood of Steel, mercenaries, and the Enclave.


The T-51 power armor series is described as adaptable, designed to be both lightweight and capable of absorbing over 2,500 Joules of kinetic impact.[Non-canon 1][2] Some variants require custom-fitting for each individual operator, while others can be utilized broadly.[Non-canon 7] Those who utilize the armor benefit from increased strength, the ability to survive for weeks without water, and protection from radiation damage if the suit remains airtight.[12][13][Non-canon 7]

It is constructed with a poly-laminate composite and a 10-micron silver, laser-reflecting coating, and includes features such as a headlamp, micro-motors, a back-mounted TX-28 MicroFusion Pack and HiFlo hydraulic system.[2][14][Non-canon 7] Some sets have the ability to undergo a hardening process that increases its effectiveness.


T-51b power armor

T51 power armor.png

The pre-War model is seen throughout the wastelands, some of which serve as a faction disguise.

Winterized T-51b

Fo3OA Winterized T-51b.png

Gameplay article: Fallout 3

A pre-War variant of the T-51b power armor adapted for fighting in arctic environments. The armor is painted to blend in with the snowy environments and features stars, serial numbers, and flag decals.

Brotherhood T-51b

FNV T51b Brotherhood.png

Gameplay article: Fallout: New Vegas

A post-War variant of the T-51b, used by the Brotherhood of Steel as its service armor in the American southwest. They are gray in color, with a Brotherhood of Steel logo.


The Courier states that the T-series' vision slits are bulletproof.[15] Sheena, an Appalachian raider, mentions "a helmet with a bullet hole through the visor" being taken as a trophy after a battle with the Brotherhood First Expeditionary Force.[16]

Behind the scenes


  1. 1.0 1.1 Fallout 4 loading screens: "The T-51 series of Power Armor was the pinnacle of mechanized protection before the Great War. First introduced in the Battle of Anchorage, it is highly valued today for its increased protective capabilities."
  2. 2.0 2.1 2.2 Power armor specs
  3. The Vault Dweller: "{112}{}{What type of armor is that your wearing.}"
    Darrel: "{135}{}{This is Powered Combat Infantry Armor model T-51b or more commonly know as Power Armor.}"
    (Darrel's dialogue)
  4. Fallout 76 loading screens: "Built by defense contractor West-Tek, the T-45 series of Power armor was the first to be successfully deployed on the battlefield. Its introduction changed the nature of modern warfare."
  5. The Vault Dweller: "{207}{}{Base Information}"
    ZAX 1.2: "{211}{}{West Tech Research Facility: Founded in 2002 as a private contractor for the United States government, the company initially consisted of two divisions--the Advanced Weapons Research and the Biomedical Sciences divisions.}
    {241}{}{ In 2069, West Tech was the single largest contractor for the United States government; its largest contract being Powered Infantry Armor Model T-51b. }"
    (ZAX 1.2's dialogue)
  6. 6.0 6.1 6.2 Fort Strong terminal entries; General Brock's terminal, General Brock's Report - September 2075
  7. Fort Strong terminal entries; General Brock's terminal, General Brock's Report - February 2076
  8. 8.0 8.1 Fort Strong terminal entries; General Brock's terminal, General Brock's Report - June 2076
  9. Constantine Chase: "What are we looking at for losses if we pull this off?"
    Thomas Morgan: "I'd say about 20 percent, sir. But that number significantly decreases if we can get the tin cans in there."
    Constantine Chase: "Good, good. Keep monitoring the battlefield and let me know when we've punched through the Pulse Field."
    (Constantine Chase and Thomas Morgan's dialogue)
  10. Constantine Chase: "How's our boys in the suits doing?"
    Thomas Morgan: "The T-51b units are at 95 percent readiness level. We've had a bit of trouble adapting them to the cold."
    Constantine Chase: "Well, tell those men they need to be ready. As soon as the Pulse Field is down, we need them cocked, locked and ready to rock."
    (Constantine Chase and Thomas Morgan's dialogue)
  11. Fallout intro
  12. Ancient Brotherhood disk: "The fact that I can smell Soto's burning flesh where his arm was taken off means that my power armor is no longer airtight, so I'm sucking up a lot more rads than I had planned on. I'm leaking hydraulics at an alarming rate. We need to get far enough away from this place before my armor dies."
  13. Paladin: "{103}{}{Did you know you could survive for weeks without water in a suit of powered armor?}"
    (Generic Paladin's dialogue)
  14. The Vault Dweller: "{218}{}{Power Armor. Status: Complete}"
    ZAX 1.2: "{231}{}{Power Armor Specs: The T-51b Powered Infantry Armor is designed with the latest passive defense features for both civilian and military disturbances. }
    {250}{}{The back-mounted TX-28 MicroFusion Pack generates 60,000 Watts to power the HiFlo hydraulic systems built into the frame of the suit. }
    {251}{}{Made of the latest poly-laminate composite, the T-51b shell is lightweight and capable of absorbing over 2500 Joules of kinetic impact. }
    {252}{}{The 10 micron silver ablative coating can reflect laser and radiation emissions without damage to the composite subsurface.}"
    (ZAX 1.2's dialogue)
  15. The Courier: "You're saying that you killed a Brotherhood of Steel Paladin?"
    Ricky: "What's it sound like I'm saying? If I was saying what you said I was saying, then yeah, I said it!"
    The Courier: "Please go on. This promises to be entertaining."
    Ricky: "I was walking along, minding my own, and up pops one of them Brotherhoods. He yells "Hand over that laser rifle, asshole!" So I hand it over, just to make him think I'm scared! But really I'm not! I never am! Before he knows what hit him, I draw my 11mm machinegun and BAM! BAM! Right through the eyeslit in his helmet! D.O.A.!"
    The Courier: "What a load of crap. The eyeslits of T-series power armor are bullet-proof!"
    Ricky: "Then I guess this dumb fucker's armor musta been... D-series or something! All I know is, he died up real dead when I killed him, okay?"
    (Ricky's dialogue)
  16. Vault Dweller: "Did your Raider friends mention anything else about the fight?"
    Sheena: "They wouldn't shut up about it, so I learned to tune it out pretty quick. But I do remember them passing around a helmet with a bullet hole through its visor. A trophy from the fallen."
    (Sheena's dialogue)


  1. 1.0 1.1 Power Armor Adventure Card: T-51 Power Armor
    "The pinnacle of pre-War Power Armor, West Tek's development of the T-51 model helped tip the scales of war in America's favor. It provides a perfect balance of protection and mobility - making it adaptable to most situations."
    (Bethesda UK Twitter)
  2. Fallout Bible 0 timeline: "2067 The first suit of Power Armor is deployed in Alaska. While lacking the full mobility of future versions, this Power Armor is incredibly effective against Chinese tanks and infantry. Its ability to carry heavy ordinance becomes key in various localized conflicts, and it has the power to destroy entire towns without endangering the wearer. China rushes to create its own versions, but they are many years behind the United States."
  3. Fallout Bible 0 timeline: "2074 Contrary to their claims of seeking only to retake Alaska from the Reds, American Power Armor units, infantry, and mechanized divisions are deployed to China, but they become bogged down on the mainland, putting a further drain on American resources and supply lines.'"
  4. 4.0 4.1 Fallout Bible 0 timeline: "2076 June Power Armor prototype completed, resulting in the Power Armor players find in Fallout 1. This is the pinnacle of Power Armor technology before the Great War. Many of these units are sent to China, and they begin to carve a swath through the Chinese forces. The Chinese resources are strained to the breaking point, and the supply lines from the nations China has annexed begin to break down."
  5. Fallout 3 Official Game Guide Game of the Year Edition p.43: "Chinese Army (Simulated), U.S. Army (Simulated)
    With conditions deteriorating between the United States and China, a military presence in Alaska was established to prevent a possible invasion across the Bering Strait. With increasingly scarce oil reserves, a last deep-sea deposit below the Pacific Ocean was claimed by China before allegedly being sabotaged by American special operatives. Strained relationships spiraled downward into conflict as China marched on Alaska, and the Sino-American War of 2066—2077 erupted. Under the command of General Jingwei, the Chinese Army usurped control of Alaska's oil pipeline and reserves. In response, the Americans began what came to be called "The Alaskan Reclamation Operation" (2067—2077).
    Under the leadership of General Constantine Chase, the U.S. Army battled fiercely to the front lines of the conflict before Chase began deploying specialized Power Armor units that began pushing the Chinese back. Future Power Armor suits were further refined as the conflict dragged on, and the Trans-Alaska Pipeline was reclaimed. With resources flowing through Canada, strained diplomatic tensions between Canada and the United States becoming problematic, and Canadian forces attacking the pipeline, the country was annexed.
    A combination of inclement weather, constant American bombardment and trench warfare, and U.S. Powered Armor unit attacks sweeping through mainline China, the Chinese supply lines weakened and finally broke down completely. By the beginning of 2077, the city of Anchorage was finally liberated, the Chinese eradicated, and the operation deemed a success. A commemorative memorial was erected in Washington, D.C., in honor of the soldiers who fought and perished for the greater American good. Violence between America and pockets of Canadian freedom fighters continued throughout 2077, until the Great War obliterated almost all infrastructure, commerce, and human life."
    (Fallout 3 Official Game Guide faction profiles)
  6. Fallout Bible 0 timeline: "2077 January 22 The first domestic use of Power Armor within the United States for crowd and quarantine control. Units originally serving in China and the Anchorage Front Line find themselves fighting Americans at home. Food riots increase, and many civilians are killed. Several soldiers defect from the military both in Canada and the United States. They are captured, and are sent to military prisons."
  7. 7.0 7.1 7.2 Fallout 2 Official Strategies & Secrets p. 67: "Power Armor is the latest development in personal body armor. This armor must be custom fitted to the user and is so heavy that it requires internal micro-motors to allow movement. Hardening is a process that increases the protection of normal Power Armor. Advanced Power Armor is a completely new, postwar design of this Cadillac of the personal protection world (tail fins optional)."
  8. 8.0 8.1 J.E. Sawyer, NMA: "We tried to model the power armor as T-Ray did in the opening movie and game, but he could get away with clipping that would look really bad at close distances or certain angles. Simply put, building the Fallout power armor as it originally looked would have resulted in a suit with a tiny range of motion or a hilarious amount of clipping. We changed as much as we needed to allow for more flexibility in movement, but tried to stay very close to the original design whenever possible."
  9. Tim Cain GDC talk at 10:42