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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 LSRU-115-OU-1.5 Load Sensor 115V 0-10 Amp Variable Trip (Replaces -1 model) Littelfuse LSRU-115-OU-1.5, MSRLSRU115OU1.5, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115OU1.5 -
Littelfuse LSRU-115-OU-2 Load Sensor 115V 5-25 Amp Variable Trip Littelfuse LSRU-115-OU-2, MSRLSRT115OU2, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115OU2 -
Littelfuse LSRU-115-OU-3 Load Sensor 115V 25-100 Amp Variable Trip Littelfuse LSRU-115-OU-3, MSRLSRU115OU3, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115OU3 -
Littelfuse LSRU-115-UE-2 Load Sensor 115V 5-25 Amp Extended Start Delay Littelfuse LSRU-115-UE-2, MSRLSRT115UE2, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115UE2 -
Littelfuse LSRU-115-UR-2 Load Sensor 115V 5-25 Amp Variable Restart Delay Littelfuse LSRU-115-UR-2, MSRLSRU115UR2, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115UR2 -
Littelfuse LSRU-115-UT-2 Load Sensor 115V 5-25 Amp Variable Trip Delay Littelfuse LSRU-115-UT-2, MSRLSRU115UT2, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115UT2 -
Littelfuse LSRU-115-UT-3 Load Sensor 115V 25-100 Amp Variable Trip Delay Littelfuse LSRU-115-UT-3, MSRLSRU115UT3, preset load sensor, 115V current sensor, lockout protection,
Price: $235.26
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRU115UT3 -
Littelfuse LSRX Load Sensor Self-Powered 5-200 Amp Fast-on Terminals Littelfuse LSRX, MSRLSRX, self-powered, GO/NO GO, AC current sensor,
Price: $85.52
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRX -
Littelfuse LSRX-C Load Sensor Self-Powered 5-200 Amp Depluggable Terminals Littelfuse LSRX-C, MSRLSRX-C, self-powered, GO/NO GO, AC current sensor, deplugable
Price: $85.52
Availability: Special Order
Littelfuse/Symcom Item #: MSRLSRXC -
Littelfuse Model 201-100-SLD Seal Leak Detector 110-120V 8-Pin Plug-In MSR201-100-SLD Littelfuse 201-100-SLD, 110-120V, Seal Leak Detector
Price: $122.79
Availability: Special Order
Littelfuse/Symcom Item #: MSR201100SLD -
Littelfuse Model 460-15-100-LLS Liquid Level Sensor 110-120V 8-Pin Plug-In MSR460-15-100-LLS Liquid Level Sensor littelfuse 460-15-100-LLS Liquid Level Sensor, 110-120V, Seal Leak Detector
Price: $133.19
Availability: Special Order
Littelfuse/Symcom Item #: MSR46015100LLS -
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: $131.78
Availability: Special Order
Littelfuse/Symcom Item #: MSR46015100SLD -

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