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.

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Littelfuse Inc. SE-105D

GF-GC MONITOR 120-VAC/DC

1370.16

Littelfuse Inc. D0900.0010

ARC DETECTING RELAY AC

1367.55

Littelfuse Inc. SE-325T

NGR MONITOR 120 VAC GF TIME 0.1-

1361.7

Littelfuse Inc. SE-325S

NGR MONITOR EXT RES TRIP TIME

1361.7

Littelfuse Inc. SE-325P

NGR MON 120 VAC 4K8 NGR SHORT DE

1361.7

Littelfuse Inc. SE-325N

NGR MONITOR 120 VAC NON-LATCHING

1361.7

Littelfuse Inc. SE-325ET

NGR MON 240 VAC GF TIME 0.1-5S

1361.7

Littelfuse Inc. SE-325ES

NGR MON 240 VAC EXTENDED RF TRIP

1361.7