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Troubleshooting

If the unit fails to operate properly, check that all connections are correct per the appropriate wiring diagram on the product. If problems continue, contact 

Macromatic via email at tech-support@macromatic.com for assistance.

Warranty

All catalog-listed COKP Series Relays manufactured by Macromatic are warranted to be free from defects in workmanship or material under normal service 

and use for a period of five (5) years from date of manufacture.

Macromatic Industrial Controls, Inc.  •  2201 Corporate Drive  •  Waukesha, WI 53189

For product information and technical support go to www.macromatic.com/contact

Operation

Function Chart

The pick-up current setting is user-adjustable within one of three ranges. An 

external current transformer can be used to extend the range beyond 10 am-

peres. The drop-out setting is adjustable from 50-95% of the selected pick-up 

setting. The relay will energize when the monitored AC current is above the 

pick-up setting for a period longer than the adjustable time delay (t) of 0.1-10 

seconds. This delay prevents nuisance tripping caused by inrush currents. It 

will de-energize when the monitored AC current is below the drop-out setting.

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