The PR203 Sel Thermal Compressor Protector Motor Protection Relay is a cutting-edge device engineered to consistently monitor 3-phase power lines for any abnormal conditions. This versatile relay is suitable for motors of any size or type. Upon detecting a motor fault that exceeds the preset alarm threshold, the PR203 promptly activates the release switch to shut down the circuit, ensuring optimal safety and performance. With an optional RS485 communication port, users can effortlessly upload monitoring data and alarm statuses to a remote control system, enhancing operational efficiency.

Features

• Cost-effective electronic design relay that can replace various single-function protection relays.
• Compatible with motors under 0.66KV.
• Integrated 3P CT for current sampling, suitable for currents under 200A.
• Two digital outputs for external control loops.
• Optional RS-485 network communications.
• Optional earth leakage sensor or analog output available.
• Optional ground fault detection.
• Equipped with an LCD display for easy monitoring.

Application

• Compatible with or without a zero-sequence core-balance current transformer.
• Can be used with or without an external RTD module.
• Suitable for across-the-line and star-delta starting methods.
• Ideal for two-speed motors.