Some power armor sets are available at vendors. A vendor will typically only have a few pieces available at any given time - you will have to come back a few times to get a full set.

Power Armor Set	Location	Conditions	Rarity
T-49	The Collector - Traveling	None	Single set, guaranteed
Institute Power Armor	The Institute - Requisitions	Allied with The Institute	Uncommon - Can be legendary
T-47R	The Prydwen - Proctor Teagan*	Promoted to Knight, Level 14	Uncommon
T-47R	Atom Cats Garage	Level 14	Uncommon
T-51c	Atom Cats Garage	Level 14	Uncommon
Hellcat	Atom Cats Garage	Level 14	Uncommon
Enclave X-02	The Prydwen - Proctor Teagan*	Promoted to Knight, Level 21	Uncommon
Enclave X-02	Atom Cats Garage	Level 21	Rare
Horse Power Armor*	The Collector - Traveling	Level 21	Uncommon - Can be legendary
Red Shift Power Armor	The Collector - Traveling	Level 21	Uncommon - Can be legendary
SE-01	The Prydwen - Proctor Teagan*	Promoted to Knight, Level 21	Uncommon
SE-01	Atom Cats Garage	Level 21	Rare
Midwest Power Armor Evolution	The Prydwen - Proctor Teagan	Promoted to Knight, Level 25	Uncommon
Vault-Tec Power Armor	Vault 81 - The Depot	Level 25	Rare - Can be legendary
Soviet Power Armor	The Collector - Traveling	Level 28	Uncommon - Can be legendary
X-01	The Prydwen - Proctor Teagan*	Promoted to Paladin, Level 28	Uncommon
Hellfire X-03	The Prydwen - Proctor Teagan	Promoted to Paladin, Level 28	Uncommon
Enclave Power Armor	The Prydwen - Proctor Teagan	Promoted to Paladin, Level 28	Uncommon
Hellfire X-03	Atom Cats Garage	Level 28	Rare
Enclave Power Armor	Atom Cats Garage	Level 28	Rare
Synth Power Armor	The Institute - Requisitions	Level 28	Rare
T-65	The Prydwen - Proctor Teagan	Promoted to Paladin, Level 35	Uncommon
T-65	Atom Cats Garage	Level 35	Rare
X-02 (Black Devil)	The Prydwen - Proctor Teagan	Promoted to Paladin, Level 35	Uncommon
X-02 (Black Devil)	Atom Cats Garage	Level 35	Rare
Liberty Power Armor	The Collector - Traveling	Level 35	Uncommon - Can be legendary
Ultracite Power Armor	The Prydwen - Proctor Teagan	Promoted to Sentinel	Uncommon
Classic Advanced Power Armor	The Prydwen - Proctor Teagan, Atom Cats Garage	Level 42	Rare

• The power armor available from the Brotherhood of Steel is affected by settings in MCM
• Enclave X-02 is only available at the Brotherhood of Steel if using the All Factions Paintjob patch that gives the Brotherhood painted sets for their Knights and Paladins
• If using Some Assembly Required, the Atom Cats mostly carry T-45 instead of the items in the table above
• Horse Power Armor is not available from The Collector by default, but this can be enabled in MCM

The Collector

The Collector is a traveling vendor who is always on the lookout for rare and valuable items. He moves between the following locations:

• Big John's Salvage (nearby Red Rocket)
• Fort Hagen (power armor repair bay down the hill to the south)
• Robotics Disposal Ground

He typically only sells exotic power armor, like Liberty Power Armor and Red Shift Power Armor - the pieces you won't get as legendary drops. There is a small chance for other legendary items to be available, however.

If none of the exotic power armor sets are installed or have all been turned off using MCM, he will instead have Enclave or vanilla power armor available as legendary items.

Horse Power Armor can be configured in MCM to be available from The Collector.

Settler Vendor-O-Tronic 2000

If you have Local Leader Rank 2 and the Settler Vigilante Power Armor mod installed, you can build a Settler Vendor-O-Tronic 2000 in your workshop under the Power -> Miscellaneous category. This vending machine is stocked by local settlers, selling Settler Vigilante power armor for 200 caps each. There is a chance for any of this power armor to be legendary.