The CO Series is used to detect an overcurrent condition. The pick-up current setting is user-adjustable within one of three ranges as shown in the Product Selection Table below. An external current transformer can be used to extend the range beyond 10 amperes.

Choose between a fixed drop-out current setting at 95% of the selected pick-up setting or an adjustable drop-out setting of 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 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.

• Monitors AC single phase currents for overcurrent conditions
• Adjustable time delay of 0.1-10 seconds on pick-up
• Three separate current monitoring ranges covering 0.1 - 10 amperes
• External CT can be used to extend ranges
• Adjustable Pick-up Setting with either Fixed or Adjustable Drop-out Setting
• Choice of compact 8 Pin SPDT or 11 Pin DPDT plug-in case
• 10A output contacts

Application Data

Input Voltage Tolerance:
AC Operation: +10/-15% of nominal at 50/60 Hz.

Load (Burden): Less than 5VA

Current Settings:
Pick-up: Adjustable throughout current range monitored
Drop-out: Fixed at 95% of pick-up setting (COP Series); or Adjustable from 50-95% of pick-up setting (COKP Series)

Temperature: -28^o to 65^oC (-20^o to 150^oF)

Response Times:
Pick-up: Adjustable 0.1 - 10 seconds
Drop-out: 100ms

Output Contacts:
10A Resistive @ 240VAC/30VDC, 1/2HP @ 240VAC (N.O.), 1/3HP @ 240VAC (N.C.)

Life:
Mechanical: 10,000,000 operations
Full Load: 100,000 operations

Indicator LED: Green when Input Voltage is applied; Red when Relay is energized

Reset: Automatic. Contact Macromatic for information on a product with a latching function--the relay remains energized even after the current drops below the drop-out setting until a remote N.C. button is opened.

Mounting: Requires an 8 or 11 pin octal socket--see Sockets & Accessories.

Approvals:

Dimensions