Protection Relays & Systems

Protection relays detect abnormal operating conditions in an industrial system and may trigger an alert or isolate the offending device from the system. Common detection functions include; Arc-flash, temperature monitoring, ground fault, over-current, over-voltage, reverse power flow, over-frequency, under-frequency and phase loss, sequence or imbalance.

---

Littelfuse Inc. SE-330AU-20-00

NEUTRAL-EARTHING-RESISTOR MONITO

0.2

Littelfuse Inc. SE-330-20-01

NGR MONITOR NC 48-VDC

0.2

Littelfuse Inc. SE-135-10

GF-GC MON 18-72 VDC USES SE-TA12

0.2

Littelfuse Inc. SE-134C-10

GFGC MONITOR LOW VOLTAGE

0.2

Littelfuse Inc. FPU-32-04-00

FPR W/TIA-232/ETHERNET

0.2

Littelfuse Inc. FPU-32-02-00

FPR W/TIA-232/DEVICENET

0.2

Littelfuse Inc. FPU-32-01-00

FPR WITH TIA-232/TIA-485

0.2

Littelfuse Inc. SE-330-00-10

NGR MONITOR CE/C-T

0.2