MotorSaver 3-Phase Voltage Monitor 250A 190-480V DPDT Relay by URI

Description

Product Overview

The MotorSaver 3-Phase Voltage Monitor, model 250A, is engineered to deliver precise, real‑time voltage tracking across three separate phases in demanding industrial environments. Constructed with high‑grade copper contacts and a solid‑state housing, the unit withstands harsh temperature fluctuations, vibration, and electrical noise, ensuring reliable operation over many years of service.

Designed for a voltage range of 190 V to 480 V, the monitor automatically adapts to the incoming supply, eliminating the need for manual range selection and reducing setup time. The integrated DPDT (double‑pole double‑throw) contacts provide versatile wiring configurations, allowing users to trigger alarms, control relays, or interface with programmable logic controllers (PLCs) with ease.

Physical dimensions of 2.95 × 5.27 × 2.93 inches and a weight of just over one pound make the device compact enough to fit into crowded control panels while still offering the robustness required for heavy‑duty applications. The enclosure meets industry standards for ingress protection, safeguarding internal components from dust and moisture.

Key specifications include a 250 A current rating, a fast response time to voltage deviations, and a clear LED indicator that provides immediate visual feedback on the health of each phase. The monitor also features a built‑in diagnostic mode that assists maintenance personnel in verifying proper operation without removing the unit from the circuit.

With a proven track record reflected in a 4.6‑star rating from over twenty verified customers, the MotorSaver monitor has become a trusted component for manufacturers, plant operators, and system integrators seeking dependable phase protection.

Usage

Industrial facilities that rely on three‑phase power—such as manufacturing plants, processing factories, and large‑scale HVAC systems—benefit greatly from continuous voltage monitoring. The MotorSaver monitor can be installed in motor control centers, variable frequency drive (VFD) cabinets, and power distribution units to detect phase loss, voltage imbalance, or over‑voltage conditions before they cause equipment damage.

Electrical contractors often deploy the device during the commissioning of new machinery to verify that supply voltage remains within design tolerances. Its DPDT contacts enable seamless integration with existing alarm panels, allowing operators to receive audible or visual alerts the moment a fault is detected.

In remote or harsh environments, the monitor’s durable copper construction and sealed enclosure protect it from corrosion and mechanical impact, making it suitable for outdoor substations, mining operations, and marine applications where reliability is paramount.

Because the unit requires only a low‑voltage power source for its internal circuitry, it can be powered from the same supply it monitors, simplifying wiring and reducing the need for additional power supplies.

Why Choose Us

Choosing the MotorSaver brand means selecting a product backed by decades of experience in industrial electrical components. Our engineering team follows rigorous quality‑assurance protocols, testing each unit for performance under extreme voltage spikes, temperature cycles, and mechanical stress.

We provide comprehensive documentation, including wiring diagrams, installation guides, and a detailed specification sheet, ensuring that engineers and technicians can integrate the monitor quickly and confidently. Our technical support team is available to assist with any questions, from initial setup to long‑term maintenance.

Unlike many generic relays, the MotorSaver monitor incorporates auto‑ranging technology that eliminates manual adjustments, reducing the potential for human error. The DPDT contacts are rated for high current loads, offering both flexibility and safety in demanding applications.

Our commitment to sustainability includes using recyclable materials wherever possible and designing the product for a long service life, reducing waste and total cost of ownership for our customers.

Key Features

• Auto‑ranging voltage detection from 190 V to 480 V eliminates manual setup and saves time.
• DPDT contacts provide flexible wiring options for alarms, relays, and PLC integration.
• Robust copper construction ensures long‑term durability in harsh industrial environments.
• Compact, lightweight design simplifies installation in crowded control panels.
• Dedicated customer support and detailed documentation for hassle‑free deployment.

FAQ

What voltage range does the monitor support?

The device automatically covers a range from 190 V up to 480 V, making it suitable for most three‑phase industrial power systems without the need for manual range selection.

Can the DPDT contacts handle high current loads?

Yes, the DPDT contacts are rated for up to 250 A, allowing them to switch and control high‑current circuits safely while providing reliable isolation when a fault occurs.

Is the monitor compatible with PLCs and SCADA systems?

Absolutely. The DPDT contacts can be wired directly to PLC input modules or SCADA alarm circuits, enabling seamless integration into existing automation and monitoring architectures.

What maintenance is required for the monitor?

Maintenance is minimal; periodic visual inspection of the LED indicators and verification of contact operation during scheduled shutdowns are sufficient. The built‑in diagnostic mode assists technicians in confirming proper function without removing the unit.

Does the product come with a warranty?

All MotorSaver monitors are backed by a one‑year limited warranty covering manufacturing defects, along with access to our technical support team for troubleshooting and assistance throughout the warranty period.