RK Electronics CJB Data Sheet

AC Current Sensing
Specifications
Electrical
Input Voltage:
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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