MRU3-11D | Woodward Microprocessor Voltage Protection Relay
Manufacturer: Yokogawa
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Part Number: MRU3-11D
Condition：New with Original Package
Product Type: Microprocessor Voltage Protection Relay
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Woodward MRU3-11D is a compact, microprocessor-driven voltage monitoring and protection relay for industrial and utility systems. It ensures precise voltage supervision and configurable protection functions, including overvoltage, undervoltage, and phase unbalance. Designed for demanding applications, it delivers fast response, reliable alarm and trip outputs, and flexible communication via RS-485 Modbus RTU. Its rugged, vibration-resistant housing allows deployment in generator sets, switchgear, transformer stations, and industrial automation setups.
Technical Specifications
| Feature | Specification |
|---|---|
| Brand | Woodward |
| Model Number | MRU3-11D |
| Product Type | Voltage Monitoring & Protection Relay |
| Voltage Monitoring Range | 0–690 V AC |
| Input Voltage | 24 V DC (auxiliary supply) |
| Output Signal | 4–20 mA analog output for voltage indication |
| Protection Functions | Overvoltage, undervoltage, phase unbalance |
| Response Time | < 1 ms |
| Digital Outputs | Relay outputs for alarm and trip functions |
| Communication Protocols | RS-485, Modbus RTU |
| Operating Temperature | –40°C to +85°C |
| Ingress Protection | IP67-rated enclosure |
| Mounting Type | Panel mount or DIN rail mount |
| Housing Material | Industrial-grade, vibration-resistant casing |
| Certifications | CE, RoHS compliant |
| Application Areas | Generator sets, switchgear, transformer stations, industrial automation |
FAQ – Woodward MRU3-11D Relay
Q1: Is the MRU3-11D brand-new and original?
A1: Yes, it is 100% brand-new, unused, unopened, and factory-original.
Q2: How fast can it be shipped?
A2: Shipping typically takes 3 days to 2 weeks depending on order size.
Q3: Which shipping carriers are available?
A3: Common options include DHL, UPS, FedEx, EMS, and express services.
Q4: What voltage input does it require?
A4: Requires 24 V DC auxiliary supply.
Q5: Can it communicate with SCADA systems?
A5: Yes, via RS-485 Modbus RTU protocol.
Q6: What protection functions are included?
A6: Overvoltage, undervoltage, and phase unbalance monitoring.
Q7: What is the operating temperature range?
A7: It operates reliably between –40°C and +85°C.
Q8: What mounting options are supported?
A8: Can be installed on a panel or DIN rail depending on application.