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Eaton / Moeller Series
Phase Imbalance Monitoring Relay, 80–415 V AC
The Eaton/Moeller EMR4-A400-1 is a phase imbalance monitoring relay designed to protect three-phase systems from critical faults such as phase imbalance, phase failure, and incorrect phase sequence. Operating on a supply and monitoring voltage of 380–415 V AC at 50 Hz, this relay provides early fault detection with a response delay of 0.5 seconds. Its adjustable imbalance threshold (5–15%) allows for fine-tuning to specific application needs. With the capability to detect phase loss even with 95% voltage feedback from motors, the EMR4-A400-1 ensures robust protection in industrial and commercial power systems.
Country of Origin: DE
We source directly from Eaton - 100% genuine, new-in-box certified parts.
| Brand | Eaton / Moeller |
|---|---|
| Model | EMR4-A400-1 |
| Product Type | Phase Monitoring Relay |
| Function | Phase Imbalance, Phase Loss, Phase Sequence Monitoring |
| Mounting | DIN Rail |
| Supply Voltage | 380–415 V AC |
|---|---|
| Monitoring Voltage | Same as Supply Voltage |
| Frequency | 50 Hz |
| Phase Imbalance Detection | Adjustable Threshold: 5–15% |
| Phase Failure Detection | Yes, even at 95% motor feedback voltage |
| Phase Sequence Detection | Yes |
| Response Delay | 0.5 seconds |
| Applications | Three-phase motor protection, panel installations, machinery |
Doing business with KM Parts has been a game-changer for our company. Their vast inventory and prompt same-day shipping have significantly minimized our downtime. The team's expertise and willingness to go the extra mile have made them an invaluable partner in our industrial automation needs.
We only sell authorized Eaton/Moeller parts. No knock-offs, no used parts, all warrantied. As the largest authorized stocking USA distributor representing Eaton/Moeller, we’re here to help your company run smoothly, with the best parts available, at competitive pricing, and with minimal downtime.
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