- The original Square D high capacity contactor used on single speed fans on Dash 2 locomotives has long been discontinued.
- The OEM suggested replacement is a lower current rated component, and is subject to premature failure.
- Relay Systems offers a higher capacity Dash 2 fan contactor replacement which eliminates reliability issues.
Cooling Fan/Blower Contactor Ratings
Current OEM Replacement Versus RSA Upgrade
Existing OEM Contactor
NEMA Size 3
AC-3 Rating - 90 amps
Surge Rating - 800 amps
RSA Contactor
NEMA Size 4
AC-3 Rating - 180 amps
Surge Rating - 1800 amps
- Contactors are available as individual parts or a completely assembled panel for simplified installation.
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