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Mfr Part #
Quantity Available
Price
Series
Package
Product Status
Function
Voltage - Supply
Trip Range
Delay Time
Mounting Type
Termination Style
Features
Operating Temperature
SE-TA6
SE-TA6
TERM ASSY 5.6V 50W
Littelfuse Inc.
5
In Stock
25
Factory
1 : $374.00000
Bulk
Bulk
ActiveGround Fault---Chassis MountScrew Terminal--
777-575-KW/HP-P2
777-575-KW/HP-P2
3-PHASE POWER MONITOR/500-600V
Littelfuse Inc.
10
In Stock
2
Factory
1 : $681.87000
Bulk
Bulk
ActiveMultiple500 ~ 600VAC2 ~ 800A, 450 ~ 660VAC0 ~ 999sChassis MountScrew Terminal--20°C ~ 70°C
SE-704-0D
SE-704-0D
SENSITIVE GF RELAY 9 36 VDC
Littelfuse Inc.
1
In Stock
1 : $1,112.31000
Bulk
Bulk
ActiveGround Fault12 ~ 24VDC0.01 ~ 5A0.03 ~ 20sDIN RailScrew TerminalCT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button-
3-PHASE OVERLOAD RELAY/190-480
777-TS
3-PHASE OVERLOAD RELAY/190-480
Littelfuse Inc.
8
In Stock
1 : $755.16000
Bulk
Bulk
ActiveMultiple200 ~ 480VAC2 ~ 800A, 170 ~ 528VAC0.2 ~ 500sChassis MountScrew Terminal--20°C ~ 70°C
777-LR-KW/HP-P2
777-LR-KW/HP-P2
3-PHASE POWER MONITOR/200-480V
Littelfuse Inc.
10
In Stock
1 : $681.87000
Bulk
Bulk
ActiveMultiple200 ~ 480VAC1 ~ 800A, 170 ~ 528VAC0 ~ 999sDIN RailScrew Terminal--20°C ~ 70°C
PGR-6100-120
PGR-6100-240
MOTOR GROUND FAULT & INSUL RELAY
Littelfuse Inc.
2
In Stock
2
Factory
1 : $2,040.24000
Bulk
Bulk
ActiveGround Fault240VAC10mA ~ 3A0.05 ~ 1sChassis Mount, DIN RailScrew TerminalHarmonic Filtering, Manual Reset, Test Button-
MFG_SE-107
SE-107
GROUND-FAULT GROUND-CHECK MON
Littelfuse Inc.
2
In Stock
1 : $1,295.83000
Bulk
Bulk
ActiveGround Fault120VAC0.5 ~ 5A0.1 ~ 1sChassis MountScrew TerminalAutomatic Reset, Manual Reset-
777-HVR-KWHP-P2
777-HVR-KW/HP-P2
3-PH POWER MONITOR/340-480V/
Littelfuse Inc.
1
In Stock
4
Factory
1 : $755.16000
Bulk
Bulk
ActiveMultiple340 ~ 480VAC2 ~ 800A, 340 ~ 528VAC0 ~ 999sChassis MountScrew Terminal--20°C ~ 70°C
SE-601-0D
SE-601-0D
DC GROUND FAULT RELAY 9-36 VDC
Littelfuse Inc.
8
In Stock
1 : $1,485.25000
Bulk
Bulk
ActiveGround Fault, Overcurrent12/24VDC0.1 ~ 0.2A0.5 ~ 2.5sChassis Mount, DIN RailScrew TerminalManual Reset, Test Button-40°C ~ 60°C
SE-134-SMA
SE-134C-10
GFGC MONITOR LOW VOLTAGE
Littelfuse Inc.
4
In Stock
1 : $4,085.68000
Bulk
Bulk
ActiveGround Fault24 ~ 48VDC-0.1 ~ 2.5sPanel MountScrew TerminalCT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button-40°C ~ 60°C
SE-601-0T
SE-601-0U
DC GRND FAULT RELAY 55-75 VDC SU
Littelfuse Inc.
1
In Stock
13
Factory
1 : $1,203.71000
Bulk
Bulk
ActiveGround Fault, Overcurrent120 ~ 240VAC/DC1 ~ 20mA0.05 ~ 2.5sChassis Mount, DIN RailScrew TerminalManual Reset, Test Button-40°C ~ 60°C
PGR-3100
PGR-3100
GRND FAULT INDICAT SYST LED 30V
Littelfuse Inc.
28
In Stock
1 : $618.96000
Bulk
Bulk
ActiveGround Fault600VAC--Panel MountScrew TerminalTest Button-
MFG_SE-105
SE-105
GROUND FAULT MONITOR
Littelfuse Inc.
35
In Stock
1 : $1,295.83000
Bulk
Bulk
ActiveGround Fault120VAC0.5 ~ 5A0.1 ~ 1sChassis MountScrew TerminalAutomatic Reset, Manual Reset-
EL3100-00
EL3100-00
GRND FAULT INDICATE SYST 3PHASE
Littelfuse Inc.
4
In Stock
1 : $767.73000
Bulk
Bulk
ActiveGround Fault208 ~ 600VAC--Chassis Mount, DIN RailScrew Terminal--
SE-134C-00
SE-134C-00
GROUND CONTINUITY MONITOR
Littelfuse Inc.
3
In Stock
1 : $3,577.42000
Bulk
Bulk
ActiveGround Fault120/240VAC/DC-0.1 ~ 2.5sPanel MountScrew TerminalCT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button-40°C ~ 60°C
PGR-4300-24
PGR-4300-24
GEN GRND FAULT RELAY-24VDC SUP
Littelfuse Inc.
3
In Stock
1 : $1,814.76000
Bulk
Bulk
ActiveGround Fault24VDC100 ~ 1200A0 ~ 1sChassis Mount, DIN RailScrew TerminalManual Reset, Test Button-10°C ~ 60°C
POWR-GARD Series
SE-701-0D
MONITOR GRND FAULT RELAY 12/24V
Littelfuse Inc.
3
In Stock
1 : $1,128.10000
Bulk
Bulk
ActiveGround Fault12 ~ 24VDC-0.05 ~ 2.5sDIN RailScrew TerminalCT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button-
AF0100  Series
AF0100-00
ARC-FLASH RELAY, UNIVERSAL SUPPL
Littelfuse Inc.
1
In Stock
1 : $910.84000
Bulk
1 : $1,355.76000
Bulk
Bulk
Bulk
ActiveArc-Flash100 ~ 240VAC/DC, 24 ~ 48VDC10 ~ 25 klux-Chassis Mount, DIN RailScrew Terminal--40°C ~ 70°C
77C
77C
1-PHASE OVERLOAD RELAY/ 100-24
Littelfuse Inc.
7
In Stock
1 : $384.15000
Bulk
Bulk
Active-100 ~ 240VAC100 ~ 240V AC-Chassis Mount---20°C ~ 70°C
777-LR-P2
777-LR-P2
3-PHASE OVERLOAD RELAY/200-480
Littelfuse Inc.
3
In Stock
1 : $590.79000
Bulk
Bulk
Active-200 ~ 480VAC200 ~ 480V AC-Chassis Mount---20°C ~ 70°C
RES020K
RES020K
NGR MONITOR TEST RESISTOR 20 KOH
Littelfuse Inc.
1
In Stock
1
Factory
1 : $14.01000
Bulk
-
Bulk
Active--------
SE-330-00-01
SE-330-03-00
GRND RES RELAY ETHERNET UNIV
Littelfuse Inc.
0
In Stock
1 : $5,150.99000
Bulk
Bulk
ActiveGround Fault120/240VAC/DC20 ~ 10000VAC0.1 ~ 10sPanel MountScrew TerminalHarmonic Filtering, Manual Reset-40°C ~ 60°C
MFG_EL731-00-00
EL731-00-00
AC/DC EARTH-LKGE RELAY 75-275V
Littelfuse Inc.
0
In Stock
1 : $1,356.82000
Bulk
Bulk
ActiveGround Fault, Overtemperature120 ~ 240VAC/DC0.03 ~ 5A0.05 ~ 2sPanel MountSpring TerminalCT Loop Monitoring, Harmonic Filtering-
SE-330AU-00-00
SE-330AU-00-00
NEUTRAL-EARTHING-RESISTOR MONITO
Littelfuse Inc.
0
In Stock
1 : $3,693.01000
Bulk
Bulk
ActiveGround Fault120 ~ 240VAC/DC0.125 ~ 30A0.1 ~ 0.5sPanel MountScrew TerminalHarmonic Filtering, Manual Reset-
GROUND FAULT&INSUL MONITOR 120V
PGR-3200-120
GROUND FAULT&INSUL MONITOR 120V
Littelfuse Inc.
0
In Stock
1 : $1,192.31000
Bulk
Bulk
ActiveGround Fault120VAC--Chassis Mount, DIN RailScrew TerminalManual Reset, Test Button-10°C ~ 60°C
Showing
1 - 25
of 398

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.