San Jose, CA — NK Technologies is pleased to announce the launch of the VT3-OL Series AC Voltage Transducer, engineered for precise three-phase voltage monitoring in applications where 120 VAC power is the preferred supply.

The new VT3-OL Series complements NK Technologies’ VT3 family of True RMS voltage transducers by offering a robust solution tailored for systems powered by standard line voltage, expanding the flexibility of voltage-sensing options for industrial automation and control systems.

Key Features & Benefits:

• True RMS Three-Phase Voltage Monitoring — The VT3-OL accurately measures three-phase voltages in common ranges (120, 240, and 480 VAC up to 600 VAC) for reliable system monitoring and control in three-phase electrical environments.
• Phase Loss Detection with Relay Output — Built-in phase loss detection with an SPST Form A relay provides additional diagnostic capability, helping operators identify undervoltage or missing-phase conditions that could damage equipment or reduce system uptime.
• Industry-Standard Analog Outputs — Available with 4–20 mA, 0–5 VDC, or 0–10 VDC outputs, the VT3-OL easily interfaces with PLCs, SCADA systems, and building management controllers.
• 120 VAC External Power Supply — Powered directly from 120 VAC, the VT3-OL eliminates the need for separate low-voltage power supplies in many installations — a key advantage in retrofit or utility-powered environments.
• Flexible Mounting Options — With both DIN rail and panel mount housings, the VT3-OL installs easily in a wide range of electrical panels and enclosures.
• Global Safety Certifications — UL/cUL listing and CE certification ensure compliance with international safety and performance standards.

How the VT3-OL Differs from the VT3-OS:

The VT3-OL is designed for 120 VAC supply power, making it ideal for systems where line power is readily available or preferred. In contrast, the VT3-OS Series is optimized for 24 VAC/VDC power, offering greater flexibility in low-voltage control environments and applications where 24 V supplies are standard.

About NK Technologies
With more than five decades of experience designing and manufacturing industry-leading electrical sensing products, NK Technologies delivers solutions trusted for performance, durability, and precision across global automation, energy, and industrial markets.