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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 777-TS Pump Monitor Overload Relay 190-480V 3-Phase 2-800FLA Temp.Sensor MSR777TS, 777-TS, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $855.33
Availability: Special Order
Littelfuse/Symcom Item #: MSR777TS -
Littelfuse 777VA-02 Pump Monitor Overload Relay 190-480V 3-Phase RD1 Min. UCTD Min. MSR777VA02, Littelfuse 777VA-02, Pump Monitor, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $733.10
Availability: Special Order
Littelfuse/Symcom Item #: MSR777VA02 -
Littelfuse 777VA-03 Pump Monitor Overload Relay 190-480V 3-Phase w/ phase converter MSR777VA03, Littelfuse 777-VA-03 motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
Price: $733.10
Availability: Special Order
Littelfuse/Symcom Item #: MSR777VA03 -
Littelfuse 77C Pump Monitor Overload Relay 100-240V Single Phase 2-800FLA Littelfuse 77C, MSR77C, motor protection, pump protection, motor saver, current protection, run dry protection, SymCom
In Stock!
Price: $430.79
Availability: In Stock
Littelfuse/Symcom Item #: MSR77C -
Littelfuse 77C-KW/HP Pump Monitor Overload Relay 100-240V Single Phase 2-800FLA motor protection, pump protection, motor saver, current protection, run dry protection, SymCom, littelfuse
Price: $463.69
Availability: Special Order
Littelfuse/Symcom Item #: MSR77CKWHP -
Littelfuse 77C-LR Pump Monitor Overload Relay 100-240V Single Phase 1-9FLA motor protection, pump protection, motor saver, current protection, run dry protection, SymCom,littelfuse
Price: $430.79
Availability: Special Order
Littelfuse/Symcom Item #: MSR77CLR -
Littelfuse 77C-LR-KW/HP Pump Monitor Overload Relay 100-240V Single Phase 1-9FLA motor protection, pump protection, motor saver, current protection, run dry protection, SymCom, littelfuse
Price: $463.69
Availability: Special Order
Littelfuse/Symcom Item #: MSR77CLRKWHP -
Littelfuse Informer Remote Diagnostic Tool For Single-Phase PumpSavers Informer, handheld, diagnostic tool, single-phase, PumpSaver®, PumpSaver®Plus, infrared LED, transmitters.
Price: $229.89
Availability: Back Order
Littelfuse/Symcom Item #: MSRINFORMER -
Littelfuse Informer-MS Remote Diagnostic Tool For Single-Phase PumpSavers The Informer-MS. handheld diagnostic tool, MotorSaver®, Model 455s equipped with infrared LED transmitters*
Price: $229.89
Availability: Special Order
Littelfuse/Symcom Item #: MSRINFORMERMS -
Littelfuse Model 460-15-100-SLD Seal Leak Detector 110-120V 8-Pin Plug-In MSR460-15-100-SLD Littelfuse 460-15-100-SLD, 110-120V, Seal Leak Detector
Price: $111.97
Availability: Special Order
Littelfuse/Symcom Item #: MSR46015100SLD -
Littelfuse Model ALT-100-1-SW Alternating Duplex Pump Relay with Switch 95-125V 11-pin Plug-in MSRALT1001SW, Littelfuse ALT-100-1-SW, 95-120V, Alternating, Duplex, Pump Relay,with Switch 95-125V, 11-pin Plug-in
Price: $125.07
Availability: Special Order
Littelfuse/Symcom Item #: MSRALT1001SW -
Littelfuse Model ALT-100-3-SW Alternating Duplex Pump Relay with Switch 95-125V 8-pin Plug-in MSRALT1003SW, Littelfuse ALT-100-3-SW, 95-120V, Alternating, Duplex, Pump Relay,with Switch 95-125V, 8-pin Plug-in
Price: $146.84
Availability: Special Order
Littelfuse/Symcom Item #: MSRALT1003SW -

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