800.238.7474
www.macromatic.com
sales@macromatic.com
AC STANDARD
CM Series
current sensing relays | plug-in
4
The CM Series is used to detect either an overcurrent or undercurrent 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 fi xed
drop-out current setting
at 95% of the selected
pick-up setting or an ad-
justable 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, and will de-energize when the monitored AC current is
below the drop-out setting. The time delay on both pick-up and drop-out is fi xed at
100ms.
Monitors AC currents
Three separate current moni-
toring 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
LED indicates output relay
status
Choice of compact 8 Pin SPDT
or 11 Pin DPDT plug-in case
10A output contacts
SPDT 8 Pin Plug-in
Current
Pick-up Drop-Out Input Range Product Wiring/
Setting Setting Voltage Monitored Number Socket
Adjustable Fixed 24V AC 0.1 - 1A CMP01A68 8 Pin
(Across (At 95% of 0.5 - 5A CMP05A68 70169-D
Monitored Pick-Up) 1 - 10A CMP10A68
Range) 120V AC 0.1 - 1A CMP01A62
0.5 - 5A CMP05A62
1 - 10A CMP10A62
Adjustable Adjustable 24V AC 0.1 - 1A CMKP01A68
(Across (From 50-95% 0.5 - 5A CMKP05A68
Monitored of Pick-Up) 1 - 10A CMKP10A68
Range) 120V AC 0.1 - 1A CMKP01A62 DIAGRAM 21
0.5 - 5A CMKP05A62
1 - 10A CMKP10A62
(with appropriate socket)
Sockets & Accessories available
DPDT 11 Pin Plug-in
Current
Pick-up Drop-Out Input Range Product Wiring/
Setting Setting Voltage Monitored Number Socket
Adjustable Fixed 24V AC 0.1 - 1A CMP01A28 11 Pin
(Across (At 95% of 0.5 - 5A CMP05A28 70170D
Monitored Pick-Up) 1 - 10A CMP10A28
Range) 120V AC 0.1 - 1A CMP01A22
0.5 - 5A CMP05A22
1 - 10A CMP10A22
Adjustable Adjustable 24V AC 0.1 - 1A CMKP01A28
(Across (From 50-95% 0.5 - 5A CMKP05A28
Monitored of Pick-Up) 1 - 10A CMKP10A28
Range) 120V AC 0.1 - 1A CMKP01A22 DIAGRAM 22
0.5 - 5A CMKP05A22
1 - 10A CMKP10A22
800.238.7474
www.macromatic.com
sales@macromatic.com
AC OVERCURRENT
CO Series
current sensing relays | plug-in
5
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 fi xed
drop-out current setting
at 95% of the selected
pick-up setting or an ad-
justable 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 (t) of 0.1-10 seconds. This delay prevents nuisance trip-
ping caused by inrush currents. It will de-energize when the monitored AC current
is below the drop-out setting.
Monitors AC currents for
overcurrent conditions
Three separate current
monitoring ranges covering
0.1 - 10 amperes
External CT can be used to
extend ranges
Adjustable Pick-up Setting with
Fixed Drop-out Setting
Adjustable time delay of 0.1-10
seconds on pick-up
LED indicates output relay
status
Choice of compact 8 Pin SPDT
or 11 Pin DPDT plug-in case
10A output contacts
(with appropriate socket)
SPDT 8 Pin Plug-in
Current
Pick-up Drop-Out Input Range Product Wiring/
Setting Setting Voltage Monitored Number Socket
Adjustable Fixed 24V AC 0.1 - 1A COP01A68 8 Pin
(Across (At 95% of 0.5 - 5A COP05A68 70169-D
Monitored Pick-Up) 1 - 10A COP10A68
Range) 120V AC 0.1 - 1A COP01A62
0.5 - 5A COP05A62
1 - 10A COP10A62
Adjustable Adjustable 24V AC 0.1 - 1A COKP01A68
(Across (From 50-95% 0.5 - 5A COKP05A68
Monitored of Pick-Up) 1 - 10A COKP10A68
Range) 120V AC 0.1 - 1A COKP01A62 DIAGRAM 21
0.5 - 5A COKP05A62
1 - 10A COKP10A62
DPDT 11 Pin Plug-in
Current
Pick-up Drop-Out Input Range Product Wiring/
Setting Setting Voltage Monitored Number Socket
Adjustable Fixed 24V AC 0.1 - 1A COP01A28 11 Pin
(Across (At 95% of 0.5 - 5A COP05A28 70170D
Monitored Pick-Up) 1 - 10A COP10A28
Range) 120V AC 0.1 - 1A COP01A22
0.5 - 5A COP05A22
1 - 10A COP10A22
Adjustable Adjustable 24V AC 0.1 - 1A COKP01A28
(Across (From 50-95% 0.5 - 5A COKP05A28
Monitored of Pick-Up) 1 - 10A COKP10A28
Range) 120V AC 0.1 - 1A COKP01A22 DIAGRAM 22
0.5 - 5A COKP05A22
1 - 10A COKP10A22
Sockets & Accessories available
800.238.7474
www.macromatic.com
sales@macromatic.com
AC UNDERCURRENT
CU Series
current sensing relays | plug-in
6
The CU Series is used to detect an undercurrent condition. The drop-out 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.
The pick-up current setting is
fi xed at +5% of the selected
drop-out setting. The relay
will energize when the moni-
tored AC current is above the
pick-up setting. It will de-en-
ergize when the monitored AC
current is below the drop-out
setting for a period longer
than the adjustable time delay
(t) of 0.1-10 seconds. This delay prevents nuisance tripping caused by momentary
line dips. The relay will energize when the current rises 5% above the drop-out
setting.
Monitors AC currents for
undercurrent conditions
Three separate current moni-
toring ranges covering 0.1 - 10
amperes
External CT can be used to
extend ranges
Adjustable Drop-out Setting
with Fixed Pick-up Setting
Adjustable time delay of 0.1-10
seconds on drop-out
LED indicates output relay
status
Choice of compact 8 Pin SPDT
or 11 Pin DPDT plug-in case
10A output contacts
(with appropriate socket)
SPDT 8 Pin Plug-in
Current
Pick-up Drop-Out Input Range Product Wiring/
Setting Setting Voltage Monitored Number Socket
Fixed Adjustable 24V AC 0.1 - 1A CUP01A68 8 Pin
(At +5% of (Across 0.5 - 5A CUP05A68 70169-D
Drop-Out) Monitored 1 - 10A CUP10A68
Range)
120V AC 0.1 - 1A CUP01A62
0.5 - 5A CUP05A62
1 - 10A CUP10A62
DIAGRAM 21
DPDT 11 Pin Plug-in
Current
Pick-up Drop-Out Input Range Product Wiring/
Setting Setting Voltage Monitored Number Socket
Fixed Adjustable 24V AC 0.1 - 1A CUP01A28 11 Pin
(At +5% of (Across 0.5 - 5A CUP05A28 70170-D
Drop-Out) Monitored 1 - 10A CUP10A28
Range)
120V AC 0.1 - 1A CUP01A22
0.5 - 5A CUP05A22
1 - 10A CUP10A22
DIAGRAM 22
Sockets & Accessories available
800.238.7474 | www.macromatic.com | sales@macromatic.com
Application data
Dimensions
7
current sensing relays | plug-in
AC STANDARD, AC OVERCURRENT &AC UNDERCURRENT
CM, CO & CU Series
Output Contacts:
10A @ 240V AC/30V DC, 1/2HP @ 120/240V AC (N.O.),
1/3HP @ 120/240V AC (N.C.)
Life:
Mechanical: 10,000,000 operations
Full Load: 100,000 operations
Temperature: Operating: -28o to 55oC (-18o to 131o F)
Storage: -40o to 85oC (-40o to 185oF)
Indicator LED: Green when Input Voltage is applied; Red
when Relay is energized
Reset: Automatic
Mounting:
Requires an 8 or 11 pin octal socket
Approvals:
Input Voltage Tolerance:
AC Operation: +10/-15% of nominal at 50/60 Hz.
Load (Burden):
Less than 5VA
Current Settings:
CM & CO Series
Pick-up: Adjustable throughout current range monitored
Drop-out: Fixed at 95% of pick-up setting (CMP & COP Se-
ries); or Adjustable from 50-95% of pick-up setting
(CMKP & COKP Series)
CU Series
Pick-up: Fixed at 5% above adjustable drop-out setting
Drop-out: Adjustable throughout current range monitored
Response Times:
CM Series
Pick-up: Fixed 100ms
Drop-out: Fixed 100ms
CO Series
Pick-up: Adjustable 0.1-10 seconds
Drop-out: Fixed 100ms
CU Series
Pick-up: Fixed 100ms
Drop-out: Adjustable 0.1-10 seconds
All dimensions are inches
(millimeters)
Low Voltage & EMC Directives
EN60947-1, EN60947-5-1
File #E109466 with
appropriate
socket
File #E109466
2.4 (60)
COKP & CUP
Only
2.9
(74) 3.5
(89)
1.7
(43)
Not on CUP
