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 350-200-2-6 Three-Phase Voltage/Phase Monitor MSR350-200-2-6, SymCom 350-200-2-6, 190-240V, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $233.37
Availability: Special Order
Littelfuse/Symcom Item #: MSR350-200-2-6 -
Littelfuse 355-200 Three-Phase Voltage/Phase Monitor MSR355-200, Littelfuse355-200, 19-240V, Adjustable, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $240.10
Availability: Special Order
Littelfuse/Symcom Item #: MSR355200 -
Littelfuse 355-400 Three-Phase Voltage/Phase Monitor MSR355-400, SymCom 355-400, 380-480V, Adjustable, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $269.26
Availability: Special Order
Littelfuse/Symcom Item #: MSR355400 -
Littelfuse 355-400-5 Three-Phase Voltage/Phase Monitor MSR355-400-5, SymCom355-400-5, 380-480V, Adjustable, two 480v relays, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $280.49
Availability: Special Order
Littelfuse/Symcom Item #: MSR3554005 -
Littelfuse 355-600 Three-Phase Voltage/Phase Monitor MSR355-600, SymCom 355-600, 475-600V, Adjustable, Three-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $269.26
Availability: Special Order
Littelfuse/Symcom Item #: MSR355600 -
Littelfuse 455 Three-Phase Voltage/Phase Monitor MSR455 Littelfuse 455, 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: $186.99
Availability: Special Order
Littelfuse/Symcom Item #: MSR455 -
Littelfuse 455-575 Three-Phase Voltage/Phase Monitor MSR455-575 littelfuse 455-575, 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: $186.99
Availability: Special Order
Littelfuse/Symcom Item #: MSR455575 -
Littelfuse 455480R Three-Phase Voltage/Phase Monitor MSR455480R Littelfuse 455480R, 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: $280.49
Availability: Special Order
Littelfuse/Symcom Item #: MSR455480R -
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: $103.39
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: $136.88
Availability: Special Order
Littelfuse/Symcom Item #: MSR46014 -
Littelfuse 460-15 Three-Phase Voltage Monitor MSR460-15 Littelfuse 460-15, 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: $136.88
Availability: Special Order
Littelfuse/Symcom Item #: MSR46015 -
Littelfuse 460-400Hz Three-Phase Voltage Monitor MSR460-400Hz Littelfuse 460-400Hz, 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: $105.47
Availability: Special Order
Littelfuse/Symcom Item #: MSR460400Hz -

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