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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SLU-0201
Universal Phase Monitor with Rapid Cycle Lockout & Diagnostic LED Enclosure Style: 8-Pin Plug In LEXAN® Dust Cover
SLU-100-ASA
Universal Phase Monitor Enclosure Style: LEXAN® Dust Cover
SLU-100-ASD
Din Rail Mount Universal Phase Monitor Enclosure Style: 35mm DIN Rail 14 Term Polycarbonate Housing
SLU-600-ASTDS
Universal Phase Monitor Enclosure Style: 35mm DIN Rail or Surface Mount Polycarbonate Housing
SUA-440-ASA
Phase Monitoring Relay SUA Series SPDT 10 A Socket Plug In 240 VAC
UOA-110-DKA
Drop-Out Voltage: 92-125 VDC Pick-Up Voltage: 97-130 VDC Hysteresis Voltage: 5 Adjustments: Knob
UOA-110-DLA
Drop-Out Voltage: 92-125 VDC Pick-Up Voltage: 97-130 VDC Hysteresis Voltage: 5 Adjustments: Locknut
UOA-120-AFN
Drop-Out Voltage: 100 VAC Pick-Up Voltage: 105 VAC Hysteresis Voltage: 5 Adjustments: Fixed
UOA-120-AKA
Drop-Out Voltage: 97-130 VAC Pick-Up Voltage: 102-135 VAC Hysteresis Voltage: 5 Adjustments: Knob
UOA-120-ALA
Drop-Out Voltage: 97-130 VAC Pick-Up Voltage: 102-135 VAC Hysteresis Voltage: 5 Adjustments: Locknut
UOA-125-DKA
Voltage: DC Adjustments: Knob
UOA-125-DLA
Voltage: DC Adjustments: Locknut
UOA-12-DKA
Drop-Out Voltage: 9-14 VDC Pick-Up Voltage: 10-15 VDC Hysteresis Voltage: 1 Adjustment: Knob
UOA-12-DLA
Drop-Out Voltage: 9-14 VDC Pick-Up Voltage: 10-15 VDC Hysteresis Voltage: 1 Adjustment: Locknut
UOA-208-AFN
Drop-Out Voltage: 180 VAC Pick-Up Voltage: 188 VAC Hysteresis Voltage: 8 Adjustment: Fixed
UOA-208-ALA
Drop-Out Voltage: 177-222 VAC Pick-Up Voltage: 185-230 VAC Hysteresis Voltage: 8 Adjustment: Locknut
UOA-220-AFN
Drop-Out Voltage: 180 VAC Pick-Up Voltage: 187 VAC Hysteresis Voltage: 7 Adjustment: Fixed
UOA-220-DKA
Drop-Out Voltage: 185-230 VDC Pick-Up Voltage: 194-239 VDC Hysteresis Voltage: 97 Adjustment: Knob
UOA-220-DLA
Drop-Out Voltage: 185-230 VDC Pick-Up Voltage: 194-239 VDC Hysteresis Voltage: 97 Adjustment: Locknut
UOA-230-AFN
Drop-Out Voltage: 190 VAC Pick-Up Voltage: 198 VAC Hysteresis Voltage: 8 Adjustment: Fixed