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Relays & Switches
Indicators & Displays
Relays, Switches, Sensors
CR4395 AC Current Sensing Relay
Supply Voltage AC
110 - 1.0 to 10 AAC
330 - 3.0 to 30 AAC
660 - 6.0 to 60 AAC
101 - 10 to 100 AAC
Trip On Delay
A - .5 to 6 Sec.
B - 2 to 25 Sec.
C - .1 to 1 Sec.
X - No Delay
Trip Point Dial
The CR4395 series Current Sensing Relay provides an effective and highly stable method for monitoring electrical current. The current-carrying wire is routed through the opening extending from the top of the case. When current reaches the level set by the trip point adjustment, the relay trips and starts the adjustable timer. After the timer cycles the electromechanical relay is energized. A precision voltage reference circuit ensures a highly repeatable trip point. Design of the power-on delay circuitry allows the supply power to be repeatedly cycled on and off, without affecting the stability of the current sensing operation.
*An External Current Sensing Transformer is needed for the proper operation of models that designate an External Transformer (-R).
Detecting Open Heaters and Lamps with the CR4395 Current Sense Relay
Motor Current Monitor Using the CR4395 Relay
Using External Current Transformers with Other Devices
Relay Internal CT STEP File
Relay Remote CT STEP File
AC Voltage,DC Voltage,AC/DC Voltage
Normally Open or Closed
Normally Open,Normally Closed
NPN Output,TRIAC Output
24 Vdc,120 Vac,240 Vac
Also in Relays
Variable trip point and time delay
Monitors currents from 1AAC to 100AAC
Electrical isolation between circuits
Output relay rated up to 20 Amps
LED trip status indicator
Dead band prevents relay chatter
Calibrated dial option available
External current transformers available
Power-On Delay: 100 ms max
Input Supply Power: Terminals: 2 - 1/4" Male Q C
Frequency: 60 to 400 Hz
Mechanical Life: 10 million operations, typ.@ rated load
Monitor electrical heater elements
Sense motor over/under loads
Detect lamp burn-out
Indicate phase loss
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