Railroad

SWITCHES
APEM
BI TECHNOLOGIES
C&K
EAO
Eaton
Electroswitch
Grayhill
Honeywell (Micro Switch)
McGill
Oak
Otto Controls

CABLE & ACCESSORIES
Alpha
Manhattan
Raychem (Tyco)

HEAT SHRINK TUBING
Raychem (Tyco)
Sumitomo

TEST EQUIPMENT
Pomona
Simpson

TERMINALS & SPLICES
Burndy
Tyco (AMP)

INDICATOR LIGHTS/ LAMPS/LED'S
Arcolectric
Dialight
General Electric
Micro Lamp

RELAYS
Leach
Magnecraft
P&B (Tyco)
Tyco (P&B)
Struthers Dunn

CONNECTORS
Burndy
Cole Hersee
Conxall
Methode
Switchcraft
Tyco (AMP)

FUSES & FUSE HOLDERS
Bussmann
Kulka/Marathon
Magnum 

TERMINAL BLOCKS
Kulka/Marathon
Magnum
Tyco (Buchanan)

CIRCUIT BREAKERS
Airpax
E-T-A
Eaton (Heinemann)

RESISTORS
Clarostat
Ohmite

SENSORS
Hobbs (Honeywell)
Honeywell (Micro Switch)
Sensata (formerly T.I. Klixon)

CONTACTORS
Leach
P&B (Tyco)
Stancor
Struthers Dunn