The HRN series monitoring relays are a product line offered by ELKO EP, specializing in automation and control solutions. These relays are designed to monitor various electrical parameters and detect abnormal operating conditions in industrial and commercial applications. Here are some key features and functionalities commonly associated with the HRN series monitoring relays:

1. Monitoring Functions: The HRN series relays are designed to monitor electrical parameters such as voltage, current, frequency, phase sequence, or temperature. They can detect abnormal conditions such as overvoltage, undervoltage, phase loss, phase reversal, and phase imbalance.
2. Adjustable Thresholds: Many models of the HRN series relays offer adjustable threshold settings, allowing users to set the desired trip points for different monitoring parameters based on their application requirements.
3. Relay Outputs: These relays typically provide relay outputs for signaling or control purposes. These outputs can be configured to trigger alarms, initiate shutdowns, or control other equipment in response to detected faults or abnormal conditions.
4. LED Indicators: LED indicators on the relay provide visual feedback on the status of monitored parameters, making it easy to identify abnormal conditions and troubleshoot issues.
5. Compact and DIN Rail Mountable: The HRN series relays are usually designed to be compact and DIN rail mountable, simplifying installation in control panels or enclosures where space is limited.
6. Wide Operating Voltage Range: Many models of the HRN series relays are compatible with a wide range of input voltages, making them suitable for use in various electrical systems.
7. Reliable Performance: ELKO EP products are known for their reliability and durability, ensuring consistent performance even in demanding industrial environments.

Overall, the HRN series monitoring relays provide essential monitoring and protection functions, helping to ensure the safe and reliable operation of electrical systems in industrial and commercial settings.