Phase asymmetry monitoring relay EMR6-A500-D-1, 300 - 500 V AC 184762

Phase asymmetry monitoring relay – reliable installation protection

The EMR6-A500-D-1 relay is an advanced device designed to monitor the status of the electrical network, especially phase asymmetry. It provides comprehensive protection against the effects of unbalanced loads, which translates to a longer lifespan of devices and minimizing the risk of failure. It is a key element in ensuring stable and safe power supply in both industrial and commercial installations.

### Functionality and application

The device effectively monitors *phase sequence*, detects *phase failure* and *phase asymmetry*, allowing for a quick response in the event of irregularities. The relay finds application wherever protection against the effects of unbalanced loads is required, e.g. in electrical switchboards, control panels, motor power systems and in applications requiring high power supply reliability. Thanks to the wide range of operating voltage (300…500 V AC) it is compatible with different types of networks.

**Key features:**

• Versatile protection: Monitors phase sequence, phase failure and phase asymmetry.
• Wide voltage range: Operation in the range of 300-500 V AC (50/60 Hz).
• Solid construction: Dimensions 22.5 x 85.6 x 103.7 mm provide compactness and ease of installation.
• Screw connection: Ensures a secure and durable electrical connection.
• No external power supply required: Simplified installation and cost savings.
• High durability: Designed to operate in demanding environmental conditions.

The relay is characterized by a voltage measurement range from 300 to 500 V AC and an electrical connection made using screw terminals. It has a phase sequence control function, phase failure detection and phase asymmetry control.

### Installation and operation

The EMR6-A500-D-1 relay is mounted on a IEC/EN 60715 mounting rail using a latch, which facilitates and speeds up installation. Screw terminals guarantee a solid connection of wires with a cross-section from 0.5 to 2.5 mm². The device does not require an external power supply, which simplifies the installation diagram and reduces operating costs. Status indication using LEDs facilitates diagnostics and quick detection of any problems. The relay meets the standards IEC/EN 60255-6 and UL, which confirms its safety and reliability.