Digital Thermal Overload Motor Protection Relay
This intelligent relay protects, monitors, meters, and controls motors in industrial environments. The low-voltage motor protection relay features an RS-485 Modbus RTU communication interface for backend network integration, with optional Profibus-DP.
Technical Specifications
Overview
Intelligent Motor Protection
The PR 240 is a high-performance digital thermal overload relay designed for the monitoring, metering, and control of low-voltage induction and synchronous motors. Its versatile design allows for flexible panel and DIN-rail mounting, making it ideal for power distribution systems and end-of-line industrial applications. With advanced 3-phase monitoring and RS-485 communication capabilities, it offers robust protection against electrical faults while enabling remote configuration.
Key Features
Communication Options
RS-485 MODBUS-RTUOptional Profibus-DP
- Suitable Applications
- PumpingAir-based systemsChillersBulk-material handlingPower distribution
Technical Specifications
Accuracy Metrics
| Parameter | Accuracy |
|---|---|
| Current | ± 0.5% |
| Voltage | ± 0.5% |
| Frequency | ± 0.1% |
| Power | ± 1% |
Electrical Parameters
265 Vac
Auxiliary Power Max
820 A
Max Current Range
4 kV
Impulse Withstand
Environmental Requirements
Operating Environment
- Operating Temp: -10°C to +55°C
- Storage Temp: -30°C to +70°C
- Relative Humidity: < 93% RH
- Elevation: < 3000 m
