Schneider Electric RM17TU00 Phase Sequence and Undervoltage Control Relay 183-528V AC

The Schneider Electric RM17TU00 is a high-precision modular control relay engineered to monitor phase sequence and undervoltage conditions in three-phase electrical networks. This device provides essential protection for sensitive equipment by detecting phase loss or voltage drops within a wide operating range of 183-528V AC. Its compact design and reliable performance make it an ideal solution for maintaining the stability and safety of industrial and commercial power systems.

Advantages

This control relay offers exceptional versatility through its adjustable time delay feature, which can be set between 0.1 and 10 seconds to prevent nuisance tripping during minor voltage fluctuations. The device is built to high manufacturing standards, ensuring long-term operational reliability and compliance with international safety certifications. Its modular form factor allows for easy integration into standard electrical panels, while the clear status indication helps operators quickly identify system faults.

Suitable for

• Monitoring phase sequence in three-phase motors
• Protecting industrial machinery from undervoltage damage
• Commercial building electrical distribution systems
• Automation panels requiring phase loss detection

When it may not be suitable

This device is specifically designed for three-phase AC systems and is not compatible with single-phase power supplies or DC circuits. It should not be used in environments where the ambient temperature or humidity exceeds the specified technical ratings for IP20/IP30 equipment.

Key specifications

• Operating voltage range: 183-528V AC
• Output contact: 1P 5A
• Adjustable time delay: 0.1 to 10 seconds
• Protection rating: IP20 (terminals) and IP30 (casing)
• Weight: 130 g

How to use

The relay is designed for DIN rail mounting within an electrical enclosure. Connect the three-phase supply lines to the designated input terminals according to the wiring diagram provided on the device housing. Once installed, use the front-mounted adjustment dial to set the desired time delay based on your specific application requirements. The relay will automatically monitor the phase sequence and voltage levels, triggering the output contact if the parameters fall outside the defined thresholds.

What to consider before purchase

• Verify that your system voltage falls within the 183-528V AC range
• Ensure the enclosure provides adequate protection if installed in dusty or damp environments
• Confirm that the 5A output capacity is sufficient for your control circuit requirements

Usage recommendations

Always ensure the power is disconnected before performing any wiring or maintenance on the relay. It is recommended to test the functionality of the device during the initial commissioning phase to ensure the time delay settings are correctly configured for your specific load.