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Monitors & Relays
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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 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: $359.29
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: $143.74
Availability: Out of Stock
Littelfuse/Symcom Item #: MSR460 -
Littelfuse 460-100-SP Single-Phase Voltage Monitor MSR460-100-SP, Littelfuse 460-100-SP Littelfuse 460-100-SP 95-120V Single-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $139.96
Availability: Out of Stock
Littelfuse/Symcom Item #: MSR460100SP -
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: $181.65
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: $181.65
Availability: Special Order
Littelfuse/Symcom Item #: MSR46015 -
Littelfuse 460-200-SP Single-Phase Voltage Monitor MSR460-200-SP, SymCom 460-200-SP SymCom 460-200-SP 190-240V Single-Phase Voltage Monitor, voltage monitor, volt monitor, monitor, voltage, protection, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $139.96
Availability: Special Order
Littelfuse/Symcom Item #: MSR460200SP -
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: $146.63
Availability: Special Order
Littelfuse/Symcom Item #: MSR460400Hz -
Littelfuse 460-575 Three-Phase Voltage Monitor MSR460-575 Littelfuse 460-575, 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: $146.96
Availability: Special Order
Littelfuse/Symcom Item #: MSR460575 -
Littelfuse 460-575-14 Three-Phase Voltage Monitor MSR460-575-14 Littelfuse 460-575-14, 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: $190.31
Availability: Special Order
Littelfuse/Symcom Item #: MSR46057514 -
Littelfuse 460-L Three-Phase Voltage Monitor MSR460L Littelfuse 460L, 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: $126.28
Availability: Special Order
Littelfuse/Symcom Item #: MSR460L -
Littelfuse 460-MR Three-Phase Voltage Monitor MSR460-MR Littelfuse 460-MR, 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: $181.65
Availability: Special Order
Littelfuse/Symcom Item #: MSR460MR -
Littelfuse 460-VBM Three-Phase Voltage Monitor MSR460-VBM Littelfuse 460-VBM, 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: $139.96
Availability: Special Order
Littelfuse/Symcom Item #: MSR460VBM -

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