Big Bear Instruments offers a wide variety of current monitors and phase/voltage monitors. The current monitors are used to do just that -monitor current in its necessary application. Many units can detect over and/or under current too which is important for avoiding an issue with continuous operation of critical industrial machinery. The phase/voltage monitors are designed to protect applications from things like phase loss, under or over voltage, and machine failure. Sort by manufacturer, series, monitor type, or part number.
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UOA-240-AFA
Drop-Out Voltage: 205-250 VAC Pick-Up Voltage: 215-260 VAC Hysteresis Voltage: 10
UOA-240-AFN
Drop-Out Voltage: 202 VAC Pick-Up Voltage: 210 VAC Hysteresis Voltage: 8 Adjustment: Fixed
UOA-240-AKA
Drop-Out Voltage: 205-250 VAC Pick-Up Voltage: 215-260 VAC Hysteresis Voltage: 10 Adjustment: Knob
UOA-240-ALA
Drop-Out Voltage: 205-250 VAC Pick-Up Voltage: 215-260 VAC Hysteresis Voltage: 10 Adjustment: Locknut
UOA-240-DLA
Drop-Out Voltage: 205-250 VDC Pick-Up Voltage: 215-260 VDC Hysteresis Voltage: 10 Adjustment: Locknut
UOA-24-ALA
Drop-Out Voltage: 19-27 VAC Pick-Up Voltage: 21-29 VAC Hysteresis Voltage: 2 Adjustment: Locknut
UOA-24-DLA
Drop-Out Voltage: 19-27 VDC Pick-Up Voltage: 21-29 VDC Hysteresis Voltage: 2 Adjustment: Locknut
UOA-48-DLA
Drop-Out Voltage: 38-53 VDC Pick-Up Voltage: 40-55 VDC Hysteresis Voltage: 2 Adjustment: Locknut
VBA-110-DLA
Nominal Voltage: 110 VDC Pick-up Under Voltage: 85-110 Pick-up Over Voltage: 110-135 Hysteresis Voltage: 5 Adjustments: Locknut
VBA-120-AFN
Nominal Voltage: 120 VAC Pick-up Under Voltage: 108 Pick-up Over Voltage: 132 Hysteresis Voltage: 0 Adjustments: Fixed
VBA-120-ALA
Nominal Voltage: 120 VAC Pick-up Under Voltage: 90-120 Pick-up Over Voltage: 120-150 Hysteresis Voltage: 5 Adjustments: Locknut
VBA-12-DLA
Nominal Voltage: 12 VDC Pick-up Under Voltage: 10-12 Pick-up Over Voltage: 12-15 Hysteresis Voltage: 1 Adjustments: Locknut
VBA-208-AFN
Nominal Voltage: 208 VAC Pick-up Under Voltage: 187 Pick-up Over Voltage: 229 Hysteresis Voltage: 0 Adjustments: Fixed
VBA-208-ALA
Nominal Voltage: 208 VAC Pick-up Under Voltage: 185-208 Pick-up Over Voltage: 208-240 Hysteresis Voltage: 8 Adjustments: Locknut
VBA-220-AFN
Nominal Voltage: 208/240 VAC Pick-up Under Voltage: 198 Pick-up Over Voltage: 242 Hysteresis Voltage: 0 Adjustments: Fixed
VBA-230-AFN
Nominal Voltage: 230 VAC Pick-up Under Voltage: 207 Pick-up Over Voltage: 253 Hysteresis Voltage: 0 Adjustments: Fixed
VBA-240-AFN
Nominal Voltage: 240 VAC Pick-up Under Voltage: 216 Pick-up Over Voltage: 264 Hysteresis Voltage: 0 Adjustments: Fixed
VBA-240-ALA
Nominal Voltage: 240 VAC Pick-up Under Voltage: 200-240 Pick-up Over Voltage: 240-270 Hysteresis Voltage: 10 Adjustments: Locknut
VBA-24-AFN
Nominal Voltage: 24 VAC Pick-up Under Voltage: 21.6 Pick-up Over Voltage: 26.4 Hysteresis Voltage: 0 Adjustments: Fixed
VBA-24-ALA
Nominal Voltage: 24 VAC Pick-up Under Voltage: 19-24 Pick-up Over Voltage: 24-29 Hysteresis Voltage: 2 Adjustments: Locknut