AC Current Sensing
Specifications
Electrical
Input Voltage:
24 or 115VAC, ±15%, 50/60Hz.
Pick-Up Range:
5 Amp C-T: 0.2 to 5 Amps, Adj.
15 Amp C-T: 0.6 to 15 Amps, Adj.
Drop-Out Range:
5 Amp C-T: 0.1 Amp below setpoint
15 Amp C-T: 0.3 Amp below setpoint
Time Delay: 50 Milliseconds, Fixed
C-T Insulation Voltage:
5 Amp C-T: 750VAC Max.
15 Amp C-T: 750VAC Max.
C-T Overcurrent:
50 Amps for 5 Seconds (Allow ample
time for cooling between surges.)
Protection:
Varistor and/or R-C Network
Power Consumption: 2VA
Plug-In
Output Ratings:
10 Amps @ 240/VAC (Resistive)
1/10 HP @ 120VAC,
1/6 H.P. @ 240VAC
300,000 Full Load Electrical Cycles
10,000,000 Mechanical Cycles
Physical
CJB Mounting: Plug-In
C-T Mounting: Surface
CJB Termination: 8 or 11 Pin
C-T Termination:
Primary: 3" Solid Wire
Secondary: 4" Stranded Wire
Packaging: Dust Cover
Weight: 7 Oz.
Ambient Temperatures
Operating: 0°C to 50°C
Storage: -30°C to 85°C
CJB
• 5 or 15 Amps
• 10 Amp Contacts
Ordering Information
CJB - 115A - 2 - 5 -
R-K Model
Input Voltages
24A - 24VAC
115A - 115VAC
Dimensions
2.9" .6" 1.8".6"
1.25" 1.25"
(Fixed Current)
Adjustments
1 - Fixed (DPDT-11Pin)
2 - Adj. (DPDT-11Pin)
4 - Fixed (SPDT-8Pin)
5 - Adj. (SPDT-8Pin)
Connections
4
2.3"
3
2
+
C-T Current
5 - 5 Amps, Max.
15 - 15 Amps, Max.
6
5
Input Voltage
7
8
9
1
10
11
Adj. Code 1 & 2
-
Solid Wires
AC
Load
• Plug-In Package
• Adjustable Setpoint
• C-T Provided for
5 or 15 Amps
Operation
AC Current Sensing
An input voltage must be supplied
to the CJB continuously. With the
current adjustment at the desired
setpoint, the internal relay will
energize and transfer the output
contacts when the current through
the R-K supplied C-T (Current
Transformer) exceeds the setpoint.
When the current falls below the
setpoint, the internal relay will deenergize. A 5 or 15 amp C-T is
supplied with the CJB. For higher
AC currents, use a donut C-T that
has a 5 amp secondary and select
the CJB with the 5 amp C-T option.
1.75"
2.33"
#8 Clearance
CurrentTransformer (C-T)
5 Amp #425-113A
15 Amp #425-132A
• Solid wires of C-T are connected to the Load.
• Stranded wire leads of C-T are connected
to the CJB.
513
4
3
2
+
1
Input Voltage
Adj. Code 4 & 5
6
7
-
Solid Wires
AC
Load
Energized
De-Energized
Pick-Up
Drop-Out
4/00
A5
5
8
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