Woodward MRU3-11D High-Precision Voltage Relay for Industrial Systems

Overview

The Woodward MRU3-11D voltage relay provides precise and reliable voltage monitoring for industrial, utility, and power generation systems. Designed and manufactured in the USA, it combines advanced measurement technology with flexible configuration to ensure efficient protection of electrical equipment.

This intelligent relay continuously tracks voltage parameters, including overvoltage, undervoltage, and phase unbalance. When deviations occur, the MRU3-11D triggers alarms or control actions to safeguard system stability. Its compact structure, broad input range, and versatile communication interfaces make it ideal for modern automation networks.

Key Features

• Accurate Monitoring: Measures voltage levels from 0 to 690 V AC with ±1% accuracy.

• Multi-Function Protection: Configurable thresholds for overvoltage, undervoltage, and phase imbalance.

• Integrated Communication: Supports Modbus RTU via RS485 for real-time system integration.

• Analog and Digital Outputs: Provides 4–20 mA output and dual alarm/trip signals.

• Compact & Durable: Lightweight 0.4 kg design with CE, UL, and RoHS certifications.

• Flexible Power Input: Accepts both 24 V DC and 85–265 V AC/DC supplies.

• Easy Installation: DIN rail mounting for quick panel integration.

Technical Specifications

Applications

• Industrial Power Systems: Ensures voltage stability and protection for control systems.

• Power Generation Plants: Monitors generator voltage and prevents phase imbalance.

• Utilities and Grids: Maintains network safety through precise fault detection.

• Automation Systems: Integrates into PLC-controlled environments via Modbus RTU.

Benefits

• Improved Equipment Reliability: Prevents voltage-related damage with accurate detection and fast response.

• Enhanced System Integration: Easily connects with SCADA or PLC systems using Modbus communication.

• Space-Saving Design: Compact housing simplifies installation and maintenance.

• High Operational Safety: Meets global standards with CE and UL certifications.

FAQ

Q1: Is the Woodward MRU3-11D brand new and original?
Yes, the MRU3-11D is 100% brand new, original, and covered by a 12-month warranty.

Q2: Does the relay support Modbus communication?
Yes, it supports Modbus RTU over RS485, allowing seamless integration with monitoring systems.

Q3: How can the voltage setpoints be adjusted?
Users can configure overvoltage, undervoltage, and phase imbalance thresholds through programmable parameters.

Q4: How fast can you deliver this product?
We have the MRU3-11D in stock and ship within 3 days to 2 weeks, depending on order size and logistics (DHL, FedEx, UPS).

Q5: What is your return policy if the relay has quality issues?
We support returns within 30 days for verified quality concerns.