Voltage Sensor
Bulletin K Series Voltage Sensor

Voltage Sensor Relay


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The ICS K Series voltage sensor relay is a sensor that monitors line voltage and provides a relay contact when the line reaches a predetermined level. The pickup voltage setting is adjustable and determines the point of transfer as the input increases. Dropout voltage is fixed as a percentage of the pickup and controls retransfer as the input decreases.
When the pickup level is detected, the sensor energizes the relay coil and the contact transfer is made. When the dropout level is detected, the sensor retransfers the contacts to the de-energized state of the relay. A voltage sensor relay can be used to transfer between preferred and alternate voltage sources. It could also be used as a line monitor that detects a low or high voltage condition of a single phase or three phase source.
Voltage Sensor


Voltage Sensor Selection

Part No. Coil Voltage Pickup Voltage Dropout Voltage Delay Relay Contacts
K7833

K7826

K8004

K8005
240 VAC, 1 Phase

240 VAC, 3 Phase

120 VAC, 1 Phase

120 VAC, 3 Phase
80-110% of Input

80-110% of Input

80-100% of Input

80-110% of Input
95% of Pickup

95% of Pickup

85% of Pickup

95% of Pickup
None

None

1 Sec.

None
3PDT, 5A, Resistive

DPDT, 5A, Resistive

3PDT, 5A, Resistive

DPDT, 5A, Resistive


Sensor Relay Dimension: 3.625"h x 1.75"w x 2.375"d
Standard 11 Pin Blade Plug-In Base for
Single Phase or Three Phase Relay


1 Phase Voltage Sensor Diagram

Single Phase 3PDT Bottom View



3 Phase 2PDT Voltage Sensor Diagram

Three Phase DPDT Bottom View

*Contacts shown with relay not energized


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