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1 - 25
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Mfr Part #
Quantity Available
Price
Series
Package
Product Status
Type
Trip Status
Trip Range
Delay Time
Voltage - Supply
Output Type
Circuit
Contact Rating @ Voltage
Mounting Type
35040026
35040026
3-PHASE VOLT MON/ 380-480V/ AD
Littelfuse Inc.
2
In Stock
42
Factory
1 : $181.78000
Bulk
1 : $245.56000
Bulk
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized Low380 ~ 480V ACFixed, 2 Sec, 4 Sec380 ~ 480VACRelayDPDT (2 Form C)15A @ 240VACChassis Mount
3504002
3504002
3-PHASE VOLTAGE MONITOR/ 380-4
Littelfuse Inc.
2
In Stock
11
Factory
1 : $167.80000
Bulk
1 : $226.67000
Bulk
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized Low380 ~ 480V ACFixed, 2 Sec, 4 Sec380 ~ 480VACRelaySPDT (1 Form C)15A @ 600VACChassis Mount
3554005
3554005
3-PHASE VM/ 380-480V/ ADJ VUB
Littelfuse Inc.
1
In Stock
52
Factory
1 : $218.50000
Bulk
1 : $295.16000
Bulk
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized High/Low380 ~ 480V ACFixed, 2 Sec; 2 Sec ~ 30 Sec380 ~ 480VACRelayDPDT (2 Form C)10A @ 600VACChassis Mount
ECS41BC
ECS41BC
CUR SENSE MONITOR 120VAC 2-20A
Littelfuse Inc.
31
In Stock
38
Factory
1 : $155.61000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized High/Low2 ~ 20A AC0.5 Sec ~ 50 Sec120VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
35020028
35020028
3-PHASE VOLT MON/ 190-240V/ AD
Littelfuse Inc.
2
In Stock
4
Factory
1 : $245.56000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized Low190 ~ 240V ACFixed, 2 Sec, 4 Sec190 ~ 240VACRelayDPDT (2 Form C)15A @ 240VACChassis Mount
PLR240A
PLR240A
3 PHASE LINE MONITOR
Littelfuse Inc.
9
In Stock
133
Factory
1 : $137.68000
Bulk
Bulk
ActiveVoltage Sensing ACEnergized Low190 ~ 270V ACNo Delay190 ~ 270VACRelaySPDT (1 Form C)5A @ 240VACChassis Mount
250-100-MET
250A-MET
MODEL 250A/ RIGHT FORM C RELAY
Littelfuse Inc.
1
In Stock
1 : $191.26000
Bulk
Bulk
ActiveVoltage Sensing ACEnergized High/Low190 ~ 480V ACFixed, 4 Sec190 ~ 480VACRelayDPDT (2 Form C)10A @ 240VACChassis Mount
TCSHAA
TCSHAA
MODULE CUR SENSOR 2-20A 24-240V
Littelfuse Inc.
17
In Stock
1 : $95.74000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized High2 ~ 20A AC--Solid StateSPST-NO (1 Form A)-Chassis Mount
TCSGAB
TCSGAB
MODULE CUR SENSOR 2-20A 3-50VDC
Littelfuse Inc.
6
In Stock
1 : $95.74000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized High2 ~ 20A AC--Solid StateSPST-NC (1 Form B)-Chassis Mount
ECSW6MBHT
ECSW6MBHT
CUR SENSE MONITOR 230VAC 2-20A
Littelfuse Inc.
1
In Stock
23
Factory
1 : $198.45000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized High/Low2 ~ 20A AC0.5 Sec ~ 50 Sec230VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
TCSH2A
TCSH2A
MODULE CUR SENSOR 2A 24-240V NO
Littelfuse Inc.
1
In Stock
1
Factory
1 : $95.74000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized HighFixed, 2A--Solid StateSPST-NO (1 Form A)-Chassis Mount
250A
250A
3-PHASE VOLTAGE MONITOR/ 190-4
Littelfuse Inc.
28
In Stock
235
Factory
1 : $191.26000
Bulk
Bulk
ActiveVoltage Sensing ACEnergized High/Low190 ~ 480V ACFixed, 4 Sec190 ~ 480VACRelayDPDT (2 Form C)10A @ 240VACChassis Mount
460-VBM
460-VBM
3-PHASE VOLT MON/ 190-480V/ AD
Littelfuse Inc.
5
In Stock
3
Factory
1 : $125.80000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing AC, Phase LossEnergized High/Low190 ~ 480V AC1 Sec ~ 30 Sec190 ~ 480VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
PLS240A
PLS240A
REVERSE PHASE RELAY
Littelfuse Inc.
1
In Stock
1 : $109.42000
Bulk
Bulk
ActivePhase Sequence-175 ~ 255V ACNo Delay208 ~ 240VACRelaySPDT (1 Form C)10A @ 240VACSocketable
PLR380A
PLR380A
RELAY 380-450VAC VOLT MONITOR
Littelfuse Inc.
1
In Stock
208
Factory
1 : $137.68000
Bulk
Bulk
ActiveVoltage Sensing AC, Phase Loss, Phase SequenceEnergized Low310 ~ 410V ACNo Delay340 ~ 450VACRelaySPDT (1 Form C)5A @ 240VACSocketable
201A-AU-OT
201A-AU-OT
3-PH PLUG-IN VM/190-480V/ADJ.
Littelfuse Inc.
1
In Stock
92
Factory
1 : $142.98000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized High/Low190 ~ 480V ACFixed, 1 Sec; 1 Sec ~ 30 Sec190 ~ 480VACRelaySPDT (1 Form C)10A @ 240VACSocketable
MFG_455
455
3-PHASE LINE-LOAD VOLT MON/ 19
Littelfuse Inc.
1
In Stock
1 : $196.76000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized High/Low190 ~ 480V ACFixed, 2 Sec; 2 Sec ~ 30 Sec190 ~ 480VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
102A2
102A2
3-PHASE VOLTAGE MONITOR/ 190-4
Littelfuse Inc.
4
In Stock
39
Factory
1 : $184.69000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized High/Low190 ~ 480V ACFixed, 2 Sec, 4 Sec190 ~ 480VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
201A Series
201A
3-PHASE PLUG-IN VOLTAGE MONITO
Littelfuse Inc.
9
In Stock
1 : $125.95000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized Low190 ~ 480V ACFixed, 2 Sec, 4 Sec190 ~ 480VACRelaySPDT (1 Form C)10A @ 240VACSocketable
460-575
460-575
3-PHASE VOLT MON/ 475-600V/ AD
Littelfuse Inc.
1
In Stock
20
Factory
1 : $132.06000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing AC, Phase LossEnergized High/Low475 ~ 600V AC1 Sec ~ 30 Sec475 ~ 600VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
ECSL61AH
ECSL61AH
CUR SENSE MONITOR 230VAC 2-20A
Littelfuse Inc.
1
In Stock
16
Factory
1 : $159.92000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized Low2 ~ 20A AC0.15 Sec ~ 7 Sec230VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
LSRU-115-AL-1.5
LSRU-115-AL 1.5
LOAD SENSOR/ 115V/ 0-10A/ UC
Littelfuse Inc.
1
In Stock
1 : $219.67000
Bulk
Bulk
ActiveCurrent Sensing AC-0 ~ 10A ACNo Delay115VACRelaySPDT (1 Form C)10A @ 240VACChassis Mount
355400
355400
3-PHASE VOLT MON/ 380-480V/ AD
Littelfuse Inc.
7
In Stock
19
Factory
1 : $283.34000
Bulk
Bulk
ActiveVoltage Asymmetry, Voltage Sensing ACEnergized High/Low380 ~ 480V ACFixed, 2 Sec; 2 Sec ~ 30 Sec380 ~ 480VACRelaySPDT (1 Form C)10A @ 600VACChassis Mount
LSRX
LSRX
CURRENT SENSOR W/RELAY 5-200A
Littelfuse Inc.
21
In Stock
1,650
Factory
1 : $77.96000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized High5 ~ 200A ACNo Delay-RelaySPST-NO (1 Form A)5A @ 240VACChassis Mount
LSRX-C
LSRX-C
CURRENT SENSOR W/RELAY 5-200A
Littelfuse Inc.
16
In Stock
199
Factory
1 : $78.71000
Bulk
Bulk
ActiveCurrent Sensing ACEnergized High5 ~ 200A ACNo Delay-RelaySPST-NO (1 Form A)5A @ 240VACChassis Mount
Showing
1 - 25
of 237

Monitor - Relay Output


Relay output monitors detect abnormal output of industrial relays and trigger a logical output or set of contacts. Common detection types include; AC and DC current or voltage, voltage asymmetry, ground fault, temperature monitoring, phase loss, and sequence or imbalance. They are selectable by trip range, delay time, supply voltage, mounting type, and switch circuitry.