3-phase power supply monitoring relay 183528VAC RM22TG20

3-Phase Power Monitoring – Reliability and Installation Protection

This control relay from Schneider Electric's Harmony series is a key device for monitoring the power supply status in 3-phase networks. Its main task is to detect phase failure and control phase sequence, allowing for a quick response to potential problems and preventing damage to connected devices. This relay finds wide application in industrial automation, construction, and anywhere where reliable electrical installation protection is required.

Functionality and application

The RM22TG20 relay is designed to operate in a voltage range from 183 to 528 V AC. It has two changeover contacts, allowing it to be integrated with various control and signaling systems. Thanks to its compact dimensions (width 22.5 mm), it is ideal for mounting on a DIN rail, saving valuable space in control cabinets. The device is particularly useful in applications such as:

• Lifts and material transport systems
• Packaging machines
• Water and sewage installations and pumps
• Elevators and lifting systems
• Textile industry

Construction and characteristic features

The relay is distinguished by its solid construction and ease of installation. Electrical connection is made using convenient screw terminals. In addition, the device has an integrated LED that indicates the current status of the power supply control. Using this relay allows for automatic management of load disconnection in the event of irregularities, minimizing the risk of failures and downtime. Its slim housing (90 mm high and 73 mm deep) facilitates integration with existing installations, and the ability to choose a memory function increases its versatility. It is worth emphasizing that the relay does not have overvoltage or undervoltage control functions, focusing on key aspects of 3-phase network monitoring – phase failure and phase sequence detection.