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EMD LOCOMOTIVE RELAYS

GENERAL PURPOSE

HIGH CAPACITY

TIME DELAY RELAYS TLTD

TOWER RELAYS

AIR COMPRESSOR DRIVE KITS

GE LOCOMOTIVES

EMD LOCOMOTIVES

EMD FAN CONTACTORS

60/70/80/90 SERIES

DASH 2

RELAY INTERFACE CABINETS

SPECIAL ORDER PRODUCTS

VARIABLE FREQUENCY DRIVES

CONTACT US

GE LOCOMOTIVES

CDC CONTACTORS
  • The existing air compressor drive contactors are undersized for the load encountered and are a significant cause of road failures.



Existing OEM Contactor
NEMA Size 3
Manufacturer Rating: 130 amps
AC-3 Rating: 90 amps
Surge Rating: 800 amps


RSA Contactor
NEMA Size 4
Manufacturer Rating: 230 amps
AC-3 Rating: 180 amps
Surge Rating: 1800 amps



  • Relay Systems offers a highly reliable, direct replacement upgrade which eliminates this failure mode.
  • Kits are available for EVO, AC4400, Dash 9, and Dash 8 locomotives.
  • Over 2000 locomotives have been upgraded with the RSA kit.
  • GE qualified with GE part number: 84A207944P11

CDC Kit
AC4400 CDC Kit
AIR TO AIR BLOWER
  • After successfully improving the CDC reliability, a Class I railroad asked Relay Systems to develop a kit to improve the air to air contactor system on EVO locomotives.
  • Our blower kit is also a direct replacement and uses the same contactors as the CDC, thus reducing inventory requirements.

Blower Kit
Blower Kit

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