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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 |
|---|---|---|---|---|---|
 900CPR-3-1-BL-230V-CEProtection Relays & Systems | Altech Corporation | DIGITAL CURRENT PROTECTION RELAY | In Stock | - | |
900ELR-2-110V-CEProtection Relays & Systems | Altech Corporation | DIGITAL CURRENT LEAKAGE RELAY, B | In Stock | - | |
VPRD2M-BL-CEProtection Relays & Systems | Altech Corporation | DIGITAL VOLTAGE/PHASE PROTECTION | In Stock | - | |
900VPR-2-280/520V-CUProtection Relays & Systems | Altech Corporation | DIGITAL VOLTAGE/PHASE/FREQ. PROT | In Stock | - | |
900ELR-2-230V-CEProtection Relays & Systems | Altech Corporation | DIGITAL CURRENT LEAKAGE RELAY, B | In Stock | - | |
 SE-330-27-00Protection Relays & Systems | Littelfuse | MONITOR NGR 48V FBR/RJ45 61850 | In Stock | - | |
 SE-330HV-25-01Protection Relays & Systems | Littelfuse | MONITOR NGR HV 48V DUAL SC FBR | In Stock | - | |
 EL731-11-00Protection Relays & Systems | Littelfuse | Electromechanical Relay 48VDC 24VAC 3PDT(129x96x48)mm Panel Earth Leakage Relay | In Stock | - | |
 K2CM-2HProtection Relays & Systems | Omron Automation | RELAY MOTOR PROTECTIVE 50-160A | In Stock | - | |
SE-330HV-20-00Protection Relays & Systems | Littelfuse | NGR MONITOR HV LVPS | In Stock | - | |
SE-330AU-03-00Protection Relays & Systems | Littelfuse | NEUTRAL-EARTHING-RESISTOR MONITOR | In Stock | - | |
 SE-330-00-01Protection Relays & Systems | Littelfuse | NGR MONITOR NC | 1 | - | |
 SE-330AU-00-00Protection Relays & Systems | Littelfuse | STARTCO-RESISTOR MONITOR | 1 | - | |
SE-330AU-07-01Protection Relays & Systems | Littelfuse | MONITOR NGR UNIV SC FBR/RJ45 | In Stock | - | |
 SE-701-03-CCProtection Relays & Systems | Littelfuse | SE-701-03 WITH CONFORMAL COATING | In Stock | - | |
 PGR-8800-00Protection Relays & Systems | Littelfuse | Arc Flash Relay, No Comm | 1 | - | |
K6EL-200Protection Relays & Systems | Omron Automation | RELAY GRD FAULT .2/.5A SWITCHABL | In Stock | - | |
 777-KW/HP-P2Protection Relays & Systems | Littelfuse | 3-PHASE POWER MONITOR/200-480V | 8 | - | |
 APR-S440Protection Relays & Systems | Omron Automation | 440V MOTER REVERSE DETECT | 2 | - | |
 SE-107LProtection Relays & Systems | Littelfuse | GF-GC MONITOR LATCHING GC | In Stock | - | |
 AF0100-00-CCProtection Relays & Systems | Littelfuse | ARC-FLASH RELAY UNIV W/CONFORMAL | In Stock | - | |
 777-575-HRG-P2Protection Relays & Systems | Littelfuse | 3-PH OLR/500-600V/2-90FLA/ | In Stock | - | |
 PGR-6100-120Protection Relays & Systems | Littelfuse | Electromechanical Relay 120VAC DPDT(110x99.7x75)mm DIN Rail Protective Relay | In Stock | - | |
SE-330AU-28-00Protection Relays & Systems | Littelfuse | MONITOR NGR 48V DUAL SC FBR | In Stock | - | |
SE-330AU-01-00Protection Relays & Systems | Littelfuse | NEUTRAL-EARTHING-RESISTOR MONITOR | In Stock | - |
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