Railroad

SWITCHES
CW Industries
Eaton
Electroswitch
Grayhill
Honeywell (Micro Switch)
Oak
Otto Controls

CABLE & ACCESSORIES
Alpha
Raychem (TE Connectivity)

HEAT SHRINK TUBING
Raychem (TE Connectivity)
Sumitomo

TERMINALS & SPLICES
Burndy
AMP(TE Connectivity)

POTENTIOMETERS
Honeywell (Clarostat)
PEC

INDICATOR LIGHTS/ LAMPS/LED'S
Arcolectric
Dialight
Norman Lamps

RELAYS
Eaton
Leach (Esterline)
Magnecraft
P&B (TE Connectivity)

CONNECTORS
Burndy
Cole Hersee
Conxall
Switchcraft
AMP(TE Connectivity)

FUSES & FUSE HOLDERS
Bussmann
Kulka/Marathon
Magnum 

TERMINAL BLOCKS
Kulka/Marathon
Magnum
Buchanan(TE Connectivity)

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

RESISTORS
Clarostat

SENSORS
Danfoss
Honeywell (Hobbs)
Honeywell Sensing and Control
Sensata (Klixon)

CONTACTORS
Eaton
Leach (Esterline)
P&B (TE Connectivity)
Stancor