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.
Browse Protection Relays & Systems by MPN. We highlight stock availability, support BOM matching, and source through original / verified channels.
Product List
Total Components: 100
| Product | Pricing | Datasheet | Features | Mounting Type | Operating Temperature | Delay Time | Trip Range | Function | Termination Style | Voltage - Supply | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|
 PGR-3100 Hamlin / Littelfuse | 1 $618.9600 | Test Button | Panel Mount | - | - | - | Ground Fault | Screw Terminal | 600VAC | 8,279 | |
 SE-105 Hamlin / Littelfuse | 1 $1.0000 | Automatic Reset, Manual Reset | Chassis Mount | - | 0.1 ~ 1s | 0.5 ~ 5A | Ground Fault | Screw Terminal | 120VAC | 5,294 | |
 3RN20101CW30 Siemens | 1 $162.3300 | Automatic Reset | DIN Rail | -25°C ~ 60°C | - | - | Overtemperature | Screw Terminal | 24 ~ 240VAC/DC | 9,632 | |
 CSR-1-18-5.0-4.5 R-K Electronics, Inc. | 1 $130.0000 | Manual Reset | Chassis Mount | 0°C ~ 55°C | 0.1s | 4.5 ~ 5A | - | Wire Leads | - | 4,277 | |
 DPM-24A-T R-K Electronics, Inc. | 1 $145.0000 | - | Chassis Mount | -40°C ~ 65°C | 2 ~ 10s | - | Multiple | Quick Connect - 0.187"/0.250" | 24VAC | 9,492 | |
DPM-240A-B R-K Electronics, Inc. | 1 $160.0000 | - | Chassis Mount | -40°C ~ 59°C | 2 ~ 10s | - | Multiple | Screw Terminal | 208 ~ 240VAC | 6,628 | |
DPM-24A-B R-K Electronics, Inc. | 1 $170.0000 | - | Chassis Mount | -40°C ~ 59°C | 2 ~ 10s | - | Multiple | Screw Terminal | 24VAC | 3,664 | |
 MVPL-120A-A1C R-K Electronics, Inc. | 1 $230.0000 | Manual Reset | Chassis Mount | 0°C ~ 65°C | 2 ~ 300s | - | Multiple | Plug In, 8 Pin (Octal) | 120VAC | 6,438 | |
 777-P2 Hamlin / Littelfuse | 1 $590.7900 | - | Chassis Mount | -20°C ~ 70°C | - | 200 ~ 480V AC | Multiple | Screw Terminal | 200 ~ 480VAC | 2,199 | |
 EL3100-00 Hamlin / Littelfuse | 1 $767.7300 | - | Chassis Mount, DIN Rail | - | - | - | Ground Fault | Screw Terminal | 208 ~ 600VAC | 8,682 | |
 SE-701-0U Hamlin / Littelfuse | 1 $926.1000 | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | Chassis Mount, DIN Rail | -40°C ~ 60°C | 0.5 ~ 2.5s | - | Ground Fault | Screw Terminal | 120/240VAC/DC | 8,812 | |
 PGR-4700-24 Hamlin / Littelfuse | 1 $1.0000 | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | DIN Rail | - | 0 ~ 1.5s | 0.01 ~ 3A | Ground Fault | Screw Terminal | 24VDC | 8,016 | |
 SE-601-0D Hamlin / Littelfuse | 1 $1.0000 | Manual Reset, Test Button | Chassis Mount, DIN Rail | -40°C ~ 60°C | 0.5 ~ 2.5s | 0.1 ~ 0.2A | Ground Fault, Overcurrent | Screw Terminal | 12/24VDC | 3,643 | |
 3UG4615-1CR20 Siemens | 1 $283.3000 | Automatic Reset | DIN Rail | -25°C ~ 60°C | 0.1 ~ 20s | 160 ~ 690VAC | Phase Loss, Phase Sequence, Overvoltage, Undervoltage | Screw Terminal | 160 ~ 690VAC | 2,168 | |
 3RN20121BW30 Siemens | 1 $285.3800 | Manual Reset | DIN Rail | -25°C ~ 60°C | - | - | Overtemperature | Screw Terminal | 24 ~ 240VAC/DC | 7,912 | |
 SE-TA6 Hamlin / Littelfuse | 1 $374.0000 | - | Chassis Mount | - | - | - | Ground Fault | Screw Terminal | - | 5,058 | |
 K2CM-1LS Omron Automation | 1 $436.5000 | Manual Reset, Test Button | Chassis Mount | -10°C ~ 60°C | 2 ~ 40s | 2 ~ 8A | Overcurrent, Phase Loss, Phase Sequence | Screw Terminal | 100/110/120VAC | 9,554 | |
 777-LR-P2 Hamlin / Littelfuse | 1 $590.7900 | - | Chassis Mount | -20°C ~ 70°C | - | 200 ~ 480V AC | - | - | 200 ~ 480VAC | 4,598 | |
SE-701-0D Hamlin / Littelfuse | 1 $1.0000 | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | DIN Rail | - | 0.05 ~ 2.5s | - | Ground Fault | Screw Terminal | 12 ~ 24VDC | 2,327 | |
 SE-135-00 Hamlin / Littelfuse | 1 $3.0000 | CT Loop Monitoring, Harmonic Filtering, Manual Reset, Test Button | Panel Mount | -40°C ~ 60°C | 0.1 ~ 2.5s | - | Ground Fault | Screw Terminal | 65 ~ 265VAC, 85 ~ 275VDC | 5,842 |