VMR Series
Compact, Reliable, DIN Rail Voltage Monitor Relays
The VMR Series voltage monitoring relays are engineered to improve reliability and efficiency across general industrial and white goods applications. These compact, DIN-rail mountable relays feature true RMS measurement for accurate monitoring on three-phase, 3-wire systems (208–480V).
Ideal for applications requiring dependable voltage protection and flexible setup, the VMR Series offers smart monitoring in a space-saving footprint.
Key Features:
- Multi-voltage input support for broad compatibility
- Self-monitoring and fault detection across one or more phases
- Protection against: Over-voltage (OV), Under-voltage (UV), phase asymmetry, phase loss, incorrect phase sequence, three-phase interruptions
- Selectable supply voltage with adjustable trip points for UV, OV, and phase imbalance
- Configurable ON/OFF time delays to suit system requirements
- Single Form C (changeover) relay output for reliable switching
- Compact 17.5mm DIN-rail enclosure for easy installation
- LED status indicators for real-time fault alerts and dip switch change detection
Need a Large Quantity?
Contact us for inquiries on OEM pricing.
Specifications
| Certifications | CE, cUL, UL |
|---|---|
| Power Type | Electronic |
| Input | 3P3W 208 – 480 VAC |
| Housings | DIN Rail Mount |
Part Numbers
VMR01 – Voltage Monitor Relay, 5s ON delay, 0.5 to 100s trip time
VMR02 – Voltage Monitor Relay, < 750ms ON delay, 100ms time delay
VMR03 – Voltage Monitor Relay, 5s ON delay, 0.5 to 15s time delay
VMR02 – Voltage Monitor Relay, < 750ms ON delay, 100ms time delay
VMR03 – Voltage Monitor Relay, 5s ON delay, 0.5 to 15s time delay
Industry Applications
The VMR series of DIN rail mount voltage monitoring relays are designed for precise monitoring and reliable protection in three-phase systems. Applications include:
- Motor Protection
- Power Distribution
- Critical Equipment
- Generator Protection
- HVAC Systems
- Renewable Energy
- Building Automation
VMR01
The VMR01 is a high-performance voltage monitoring relay offering reliable off-delay protection and precise monitoring of key electrical parameters.
- Robust Protection: Detects a full range of voltage and phase faults
- Flexible Control Logic: Adjustable OFF-delay and settable nominal voltage
- Relay Output: Ideal for load management or triggering alarms
- Monitoring Functions: Phase Loss, Phase Sequence, Phase Asymmetry, Under/Over Voltage
- ON Delay: 5 seconds
- OFF Delay: Adjustable from 0.5 to 100 seconds
- Under / Over Voltage Threshold: -5 to -25% / +5 to +25%
- Phase Asymmetry: 10%
VMR02
The VMR02 is a durable and compact voltage monitoring relay designed to deliver reliable protection for industrial applications with fixed timing and dual relay outputs.
- Fast Response: Fixed timing supports protection of sensitive equipment
- C/O: Ideal for separate control and alarm circuits
- Compact & Rugged: Built for reliable performance in industrial environments
- Monitoring Functions: Phase Loss, Phase Sequence
- ON Delay: < 750 milliseconds
- OFF Delay: 100 milliseconds
VMR03
The VMR03 is a compact voltage monitoring relay designed to deliver essential protection for three-phase systems.
- Essential Fault Detection: Monitors common 3-phase anomalies with precision
- Configurable ON Delay: Supports a variety of motor and load startup requirements
- Space-Saving Design: Perfect for tight enclosures and field-mounted panels
- Monitoring Functions: Phase Loss, Phase Sequence, Phase Asymmetry
- ON Delay: 5 Seconds
- OFF Delay: Adjustable from 0.5 to 100 seconds
- Phase Asymmetry: Adjustable from 5% to 10%
Make sure it's the right fit!
Consider Other Similar Units
For cutting-edge digital timer relays, explore our versatile 795X Series of multi-functional timers. These units offer an array of operating modes that ensure reliable and accurate time-based control for your systems, ideal for diverse industrial applications.
If you are looking for DIN rail mounted analog timer switches, the TS Series features models specifically designed for functions such as On Delay, Off Delay, Star Delta, and Asymmetric timing, allowing for distinct ON/OFF cycles.
Consider Customization
We offer a wide variety of customization options for any product. Anything you can dream up, from branding to housings, can be modified to meet your needs. Just send us a note in the contact form below to start the conversation.
Want to learn more?
If you’re interested in this product, please send us a message! We do our best to respond within one business day.
Ask a Product Question
Our experts can answer technical questions about the product or your specific application.
Get a Quote
We’re happy to discuss OEM pricing if you are interested in larger quantities.