RK Electronics CJD Data Sheet

AC Current Sensing

16 Amp
Connection

2

7

+

-

4 5

1

3

6

8

Energized

Pick-Up

Drop-Out

De-Energized

2%

3.1" .6" 1.8"

2.3"

C-T

C-T

1"

.9"

.5"

L

o

o

p

I

t

!

CJD

• Thru Hole C-T

• 2 to 50 Amps, 5 Ranges

• 10 Amp Relay

• Noise Filter

Plug-In

Specifications

Electrical

Input Supply Voltage:

24V AC or DC
120 or 240VAC, ±15%, 50/60Hz

Sensitivity Range Connections:

2 to 8 Amps - No Connections
6 to 16 Amps - Connect 7 & 6
9 to 26 Amps - Connect 7 & 5
16 to 42 Amps - Connect 7 & 8
20 to 50 Amps - Connect 7, 6, & 8

Wire Hole Diameter: 0.35 Inch
Pick-up & Drop-out Delays:

1 Sec. Typical

Pick-up & Drop-out Differential: 2%
Power Consumption: 2VA
Output Rating SPDT @ 25°C:

10 Amps @ 250VAC, 30VDC
1/2 Hp @ 250VAC
1/3 Hp @ 125VAC

Ordering Information

Physical

Mounting: Plug-In
Termination: 8 Pin Octal
Packaging: Dust Cover
Weight: 9 Oz.

Ambient Temperatures

Operating: 0°C to 40°C
Storage: -40°C to 85°C

If current being monitored is too low
for adjustment range, multiple passes
through C-T increases effective current.
2 Passes = Double
3 Passes = Triple

• Time Delay

• Adjustable Setpoint

• Compact Design

• Low Cost

Listed

42L2

Operation

AC Current Sensing

An Input voltage must be supplied
to the CJD continuously. With the cur­rent adjustment at the desired
set point, the internal relay will ener­gize and transfer the output contacts
when the current through the C-T
on the side of the CJD exceeds the
adjustable set point for the time delay.
When the current drops 2% below the
set point, the internal relay will de­energize after the time delay. Current
ranges on the multi-range CJD are
selected by jumpers on the socket.

CJD - 120A - 5

R-K Model

Supply Voltage

24V - 22 to 28VAC/VDC
120A - 100 to 130VAC
240A - 200 to 250VAC

Connections

Example of CJD hook-up for:
8 to 16 Amp adjustment range

Adjustments

5 - 2 to 50 Amps in five ranges

Dimensions

1 Pass:
1 Amp = 1 Amp

9/20/10

2 Passes:
1 Amp = 2

•

Amps