Electrical Monitors measure various criteria of electrical current and take corrective action when needed. Browse voltage monitors, load sensors, remote monitors, relays and more below.

Littelfuse 102-600 Three-Phase Voltage Monitor MSR102-600, Littelfuse 102-600 475-600V Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $136.08
Availability: Special Order
Littelfuse/Symcom Item #: MSR102-600 -
Littelfuse 102A Three-Phase Voltage Monitor Restart Delay MSR102A, Littelfuse 102A, 190-480V, Three-Phase Voltage Monitor, Restart Delay, Three-Phase voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $136.08
Availability: Special Order
Littelfuse/Symcom Item #: MSR102A -
Littelfuse 102A-2 Three-Phase Voltage Monitor Restart Delay MSR102A-2, Littelfuse 102A-2 190-480V Three-Phase Voltage Monitor Restart Delay, Three-Phase voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $152.90
Availability: Out of Stock
Littelfuse/Symcom Item #: MSR102A-2 -
Littelfuse 102A-3 Three-Phase Voltage Monitor Trip Delay MSR102A-2, Littelfuse 102A-3 190-480V Three-Phase Voltage Monitor Trip Delay, Three-Phase voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $152.90
Availability: Special Order
Littelfuse/Symcom Item #: MSR102A-3 -
Littelfuse 102A-9 Three-Phase Voltage Monitor High Voltage Detection MSR102A-9, Littelfuse 102A-9 190-480V Three-Phase Voltage Monitor High Voltage Detection, Three-Phase voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $152.90
Availability: Special Order
Littelfuse/Symcom Item #: MSR102A-9 -
littelfuse 111-Insider-P-Series
Price: $139.62
Availability: Special Order
Item #: MSR111-INSIDER-P -
Littelfuse 231-Insider-P Single-Phase PumpSaver Plus 230V 1/3 to 1HP MSR231-INSIDER-P, SymCom 231-Insider-P, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
In Stock!
Price: $138.62
Availability: In Stock
Item #: MSR231INSIDERP -
Littelfuse 232-Insider Single-Phase PumpSaver Plus 230V Grundfos 1/3 to 1HP MSR232-INSIDER, SymCom 232-Insider-P, For Grundfos Control Boxes, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $138.62
Availability: Special Order
Item #: MSR232INSIDER -
Littelfuse 460 Three-Phase Voltage Monitor MSR460 Littelfuse 460, 190-480V, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $96.11
Availability: Out of Stock
Littelfuse/Symcom Item #: MSR460 -
Littelfuse 460-14 Three-Phase Voltage Monitor MSR460-14 Littelfuse 460-14, 190-480V, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $124.00
Availability: Special Order
Littelfuse/Symcom Item #: MSR46014 -

We've been helping customers since 1953