Switches & Circuit Breakers
ATA · 2171 parts
Switches & Circuit Breakers brings together the parts, hardware, and consumables your maintenance program calls out for this system. Each listing shows its condition and the certification paperwork available for that part, from new PMA/OEM stock to overhauled and serviceable units, so you can confirm airworthiness before buying and request an FAA 8130-3 or manufacturer Certificate of Conformance where one applies.
Switch Guard/2 position, red, keyway locator: 6 o'clock position. 400-111
P/N 400-111
NE
Ati
$120.26
Price and availability checked Oct 29, 2026 MST
Backorder
2‑Position Black Switch Guard with 6‑O’clock Keyway Locator 400‑112
P/N 400-112
NE
ACK Technologies
$230.33
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 posiotion, red, keyway locator: 12 o'clock position. 400-121
P/N 400-121
NE
Ati
$120.26
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock position. 400-122
P/N 400-122
NE
ACK Technologies
$100.07
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, momentary down, black, keyway locator: 6 o'clock position. 401-112
P/N 401-112
NE
ACK Technologies
$55.73
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, momentary down, red, keyway locator: 12 o'clock position 401-121
P/N 401-121
NE
Ati
$31.43
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, momentary down, black, keyway locator: 12 o'clock position. 401-122
P/N 401-122
NE
ACK Technologies
$101.79
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, red, keyway locator: 6 o'clock position 402-111
P/N 402-111
NE
Ati
$149.46
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, black, keyway locator: 6 o'clock position. 402-112
P/N 402-112
NE
ACK Technologies
$149.46
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, red, keyway locator: 12 o'clock position. 402-121
P/N 402-121
NE
Ati
$74.72
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard, 3-Position, Black, Keyway Locator: 12 o'clock Position (402-122)
P/N 402-122
NE
ACK Technologies
$149.46
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, red, keyway locator: 6 o'clock position. 403-111
P/N 403-111
NE
Ati
$246.90
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 6 o'clock position. 403-112
P/N 403-112
NE
ACK Technologies
$246.90
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, red, keyway locator: 12 o'clock position. 403-121
P/N 403-121
NE
Ati
$285.91
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock position. 403-122
P/N 403-122
NE
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/2 position, black, keyway locator: 6 o'clock position. 404-112
P/N 404-112
NE
ACK Technologies
$149.87
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock position. 404-122
P/N 404-122
NE
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/2 position, red, keyway locator: 6 o'clock position. 405-111
P/N 405-111
NE
Ati
$107.31
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 6 o'clock position. 405-112
P/N 405-112
NE
ACK Technologies
$145.50
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock. 405-122
P/N 405-122
NE
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, red, keyway locator: 6 o'clock position. 406-111
P/N 406-111
NE
Ati
$43.96
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, black, keyway locator: 6 o'clock position 406-112
P/N 406-112
NE
ACK Technologies
$193.52
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, black, keyway locator: 12 o'clock. 406-122
P/N 406-122
NE
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, black, keyway locator: 6 o'clock position. 408-112
P/N 408-112
NE
ACK Technologies
$120.77
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, red, keyway locator: 6 o'clock position. 400-111
NE
P/N 400-111
Ati
$120.26
Price and availability checked Oct 29, 2026 MST
Backorder
2‑Position Black Switch Guard with 6‑O’clock Keyway Locator 400‑112
NE
P/N 400-112
ACK Technologies
$230.33
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 posiotion, red, keyway locator: 12 o'clock position. 400-121
NE
P/N 400-121
Ati
$120.26
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock position. 400-122
NE
P/N 400-122
ACK Technologies
$100.07
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, momentary down, black, keyway locator: 6 o'clock position. 401-112
NE
P/N 401-112
ACK Technologies
$55.73
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, momentary down, red, keyway locator: 12 o'clock position 401-121
NE
P/N 401-121
Ati
$31.43
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, momentary down, black, keyway locator: 12 o'clock position. 401-122
NE
P/N 401-122
ACK Technologies
$101.79
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, red, keyway locator: 6 o'clock position 402-111
NE
P/N 402-111
Ati
$149.46
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, black, keyway locator: 6 o'clock position. 402-112
NE
P/N 402-112
ACK Technologies
$149.46
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, red, keyway locator: 12 o'clock position. 402-121
NE
P/N 402-121
Ati
$74.72
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard, 3-Position, Black, Keyway Locator: 12 o'clock Position (402-122)
NE
P/N 402-122
ACK Technologies
$149.46
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, red, keyway locator: 6 o'clock position. 403-111
NE
P/N 403-111
Ati
$246.90
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 6 o'clock position. 403-112
NE
P/N 403-112
ACK Technologies
$246.90
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, red, keyway locator: 12 o'clock position. 403-121
NE
P/N 403-121
Ati
$285.91
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock position. 403-122
NE
P/N 403-122
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/2 position, black, keyway locator: 6 o'clock position. 404-112
NE
P/N 404-112
ACK Technologies
$149.87
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock position. 404-122
NE
P/N 404-122
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/2 position, red, keyway locator: 6 o'clock position. 405-111
NE
P/N 405-111
Ati
$107.31
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 6 o'clock position. 405-112
NE
P/N 405-112
ACK Technologies
$145.50
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/2 position, black, keyway locator: 12 o'clock. 405-122
NE
P/N 405-122
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, red, keyway locator: 6 o'clock position. 406-111
NE
P/N 406-111
Ati
$43.96
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, black, keyway locator: 6 o'clock position 406-112
NE
P/N 406-112
ACK Technologies
$193.52
Price and availability checked Oct 29, 2026 MST
Backorder
Switch Guard/3 position, black, keyway locator: 12 o'clock. 406-122
NE
P/N 406-122
ACK Technologies
$45.30
Price and availability checked Oct 29, 2026 MST
In stock
Switch Guard/3 position, black, keyway locator: 6 o'clock position. 408-112
NE
P/N 408-112
ACK Technologies
$120.77
Price and availability checked Oct 29, 2026 MST
Backorder