Issue:
Maximum voltage and current ratings of the 8903L and 8903LX lighting contactors.
Product Line:
NEMA Lighting Contactors
Environment:
Class 8903L & 8903LX Lighting contactors
Cause:
Selecting the correct lighting contactor based on ratings
Resolution:
The maximum ratings depend on the type of load and number of poles connected to load. Ratings are as follows:
Tungsten:
One pole connected to load - 20 amp, 277 vac.
Two poles connected to load on single phase or three poles connected to load on three phase - 20 amp, 480 vac.
Ballast:
One pole connected to load - 30 amp, 277 vac.
One pole connected to load - 15 amp, 347 vac
Two poles connected to load on single phase or three poles connected to load on three phase - 30 amp, 480 vac.
Two poles connected to load on single phase or three poles connected to load on three phase - 15 amp, 600 vac.
Resistance:
One pole connected to load - 20 amp, 600 vac.
Two poles connected to load on single phase or three poles connected to load on three phase - 20 amp, 600 vac.
DC Ratings For Tungsten Lamp or Resistance Loads Only:
Two poles in series - 20 amp, 125 vdc.
Three poles in series - 20 amp, 250 vdc.
Maximum voltage and current ratings of the 8903L and 8903LX lighting contactors.
Product Line:
NEMA Lighting Contactors
Environment:
Class 8903L & 8903LX Lighting contactors
Cause:
Selecting the correct lighting contactor based on ratings
Resolution:
The maximum ratings depend on the type of load and number of poles connected to load. Ratings are as follows:
Tungsten:
One pole connected to load - 20 amp, 277 vac.
Two poles connected to load on single phase or three poles connected to load on three phase - 20 amp, 480 vac.
Ballast:
One pole connected to load - 30 amp, 277 vac.
One pole connected to load - 15 amp, 347 vac
Two poles connected to load on single phase or three poles connected to load on three phase - 30 amp, 480 vac.
Two poles connected to load on single phase or three poles connected to load on three phase - 15 amp, 600 vac.
Resistance:
One pole connected to load - 20 amp, 600 vac.
Two poles connected to load on single phase or three poles connected to load on three phase - 20 amp, 600 vac.
DC Ratings For Tungsten Lamp or Resistance Loads Only:
Two poles in series - 20 amp, 125 vdc.
Three poles in series - 20 amp, 250 vdc.
Publié pour: Schneider Electric Belgium
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