Instrumentation Control Systems

Bulletin K Series Voltage Sensor

Voltage Sensor Relay

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 Number: K7833
Coil Voltage: 240VAC, 1 Phase
Pickup Voltage: 80-110% of Input
Dropout Voltage: 95% of Pickup
Delay: None
Relay Contacts: 3PDT, 5A Resistive

Part Number: K7826
Coil Voltage: 240VAC, 3 Phase
Pickup Voltage: 80-110% of Input
Dropout Voltage: 95% of Pickup
Delay: None
Relay Contacts: DPDT, 5A Resistive

Part Number: K8004
Coil Voltage: 120VAC, 1 Phase
Pickup Voltage: 80-100% of Input
Dropout Voltage: 85% of Pickup
Delay: 1 Sec.
Relay Contacts: 3PDT, 5A Resistive

Part Number: K8005
Coil Voltage: 120VAC, 3 Phase
Pickup Voltage: 80-110% of Input
Dropout Voltage: 95% of Pickup
Delay: None
Relay Contacts: 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 relays not energized


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2775 Algonquin Road Suite 300
Rolling Meadows, Illinois 60008

TEL: 847-797-6678
www.ics-timers.com
FAX: 847-797-7418

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