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Protection Relays & Systems
(1135 results)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.
| Part # | Manufacturer | Description | Availability | Pricing | Quantity |
|---|---|---|---|---|---|
 DEB71DM24A30Protection Relays & Systems | Carlo Gavazzi | EARTH LEAKAGE MONITOR 30A ADJ | In Stock | - | |
 PRSL-100Protection Relays & Systems | R-K Electronics, Inc. | PHASE REVERSAL, 100/120VAC, 3 DP | 10 | - | |
PRS-400Protection Relays & Systems | R-K Electronics, Inc. | PHASE REVERSAL,440/480VAC 3 DPDT | 10 | - | |
 CSRA-24A-2-20-MRProtection Relays & Systems | R-K Electronics, Inc. | AC CURRENT, 24A, ADJ, 4-20A, MAN | 10 | - | |
 CLR-120A-1051Protection Relays & Systems | R-K Electronics, Inc. | UNDER FREQ, 120VAC ADJ 5-50PPS, | 10 | - | |
 MVPL-24A-A1C-A6929Protection Relays & Systems | R-K Electronics, Inc. | 1&3 VOLTAGE MONITOR 24VAC 8-PIN, | 10 | - | |
 ZVS-120A-F2AProtection Relays & Systems | R-K Electronics, Inc. | MV RELAY 120VAC, FIX 35MV 2NO | 10 | - | |
CSRA-24A-2-5-ARProtection Relays & Systems | R-K Electronics, Inc. | AC CURRENT, 24A, ADJ, 1-5A, AUTO | 10 | - | |
 TVM-400-20Protection Relays & Systems | R-K Electronics, Inc. | 3 VOLT RELAY ADJ 410-490VAC 10P | 32 | - | |
 ELCTR35-1-300MA-230VProtection Relays & Systems | Selec Controls | EARTH LEAKAGE RELAY WITH INBUILT | In Stock | - | |
 RES100KProtection Relays & Systems | Littelfuse | NGR MONITOR TEST RESISTOR 100 KO | 5 | - | |
 SE-325SNTProtection Relays & Systems | Littelfuse | NGR MON 120 VAC EXT RF GF TIME 0 | In Stock | - | |
 SE-KP1ANProtection Relays & Systems | Omron Automation | RELAY MOTOR PROTECT 100/110/120V | 2 | - | |
 SE-330HV-03-00Protection Relays & Systems | Littelfuse | NGR MONITOR HV ETHERNET | In Stock | - | |
 MPS-469X-41000Protection Relays & Systems | Littelfuse | MPS GE469 RETROFIT KIT | In Stock | - | |
 SE-330-06-01Protection Relays & Systems | Littelfuse | NGR MON UNIV DUAL RJ45 61850 K4 | In Stock | - | |
SE-330AU-00-01Protection Relays & Systems | Littelfuse | NEUTRAL-EARTHING-RESISTOR MONITO | In Stock | - | |
 SE-704-0DProtection Relays & Systems | Littelfuse | SENSITIVE GF RELAY 9 36 VDC | 4 | - | |
 PGM-8600Protection Relays & Systems | Littelfuse | Relay monitors the insulation resistance to ground for failures | In Stock | - | |
 FPU-32-04-00Protection Relays & Systems | Littelfuse | Feeder Protection Relays | In Stock | - | |
56272Protection Relays & Systems | Schneider Electric | EARTHLEAKAGE RELAY RH99P WITH MA | In Stock | - | |
SE-325EProtection Relays & Systems | Littelfuse | Electromechanical Relay 240VAC SPST( (109mm 100mm 150mm)) SMD Monitoring Relay | 1 | - | |
SE-330AU-04-01Protection Relays & Systems | Littelfuse | MONITOR NGR UNIV SC FBR/RJ45 | In Stock | - | |
 777-LR-KW/HP-P2Protection Relays & Systems | Littelfuse | 3-PHASE POWER MONITOR/200-480V | 8 | - | |
 EL731-23-00Protection Relays & Systems | Littelfuse | Electromechanical Relay 24VDC 3PDT(129x96x48)mm Panel Earth Leakage Relay | In Stock | - |
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