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PBO-1P-T: Single Phase Voltage Monitor 


Voltage Range:

• 115 to 265VAC, 1Ø



SPDT Relay Contacts

4 Built-In Voltage Selections


• Over & Under Voltage

• 115 to 265VAC, 1Ø


The PBO-1P-T monitors 4 single phase voltages with the 
tolerances pre-programmed into the PBO.

Each time the PBO is powered up, the processor evaluates the line voltage and compares it to the pre-programmed line voltages and tolerances. If the line voltage matches one of the programmed voltages and is within the tolerances, the output relay will be energized and the LED will be green. The PBO will indicate what voltage it is set for by flashing the LED red in a sequence corresponding to the selected voltage.

If a voltage fault is detected, the LED will be red.



Line Voltage: 115, 208, 230 & 265VAC, 1Ø
Frequency: 45 to 65 Hz

Over/Under Voltage: ±15%

Time Delays: 

Trip Time: 5 seconds 

Re-Start: 5 Seconds on power up

            30 Seconds after fault

Set-Up: Automatic on power up


    Good:     Continuous Green

    Fault Voltage:     Solid Red

Power Consumption: 1VA

Output Rating @ 25°C:  

    10 Amps @ 120VAC

    6 Amps @ 277VAC

    1/8 HP @ 120/277VAC

    5 Amps @   20VDC


Mounting: Surface or DIN


    Line Side: 1/4” Push-On Tabs

    Control Side: 0.187” Push-On Tabs

Packaging: Epoxy Fill

Weight: 5 Ounces


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