Eaton UVR250VDC Undervoltage Relay - IEC Rated
Part Number: UVR250VDC
Quick Summary
UVR250VDC undervoltage relay protects DC control circuits in industrial power systems. Engineers often face nuisance trips or missed protections when a DC supply sags, causing unplanned downtime. This IEC Rated device meets international electrical safety and reliability expectations, reducing compliance risk in global installations. With W-VACiMB compatibility and dual AC/DC operation, it streamlines panel design, speeds commissioning, and lowers total cost of ownership by minimizing wiring and field adjustments. By snapping into existing Eaton W-VAC system architectures, it delivers consistent performance across varied DC bus configurations, and industry teams value predictable protection logic and traceable response times for critical loads.
Product Information
Extended Description
UVR250VDC Eaton: Eaton W-VAC undervoltage relay, 220-250 Vdc, Used with W-VACiMB
Product Name
Eaton W-VAC undervoltage relay
Catalog Number
UVR250VDC
UPC
786685632582
Product Length/Depth
8 in
Product Height
3 in
Product Width
6 in
Product Weight
3 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
IEC Rated
Catalog Notes
This device opens the circuit breaker when there is notable lowering or loss of its power supply. It can operate with both direct and alternating current.
Used with
W-VACiMB
Type
Undervoltage relay
Voltage rating
220 - 250 V DC
Feature: DC voltage sensing range of 220-250 VDC. Business Impact: Accurate detection of supply sag protects downstream equipment from irregular voltage that can cause transformer or contactor wear. Application: DC control panels in manufacturing lines where stable bus voltage is essential for repeatable machine cycles. Feature: 8 in L x 6 in W x 3 in H footprint and 3 lb weight. Business Impact: Compact footprint simplifies enclosure layout and reduces mounting complexity, enabling faster installations and easier retrofit in existing panels. Application: Panel builders seeking space-efficient protection solutions for limited cabinet real estate. Feature: Dual operation on DC and AC power. Business Impact: Broad compatibility reduces wiring diversity and inventory costs while enabling flexible deployment in mixed-power environments. Application: Mixed-plant environments and retrofit projects where supply characteristics vary. Feature: W-VACiMB compatibility. Business Impact: Seamless integration with Eaton W-VAC motor protection modules minimizes wiring, improves protection coordination, and shortens commissioning time. Application: New builds and upgrades in motor control centers and panel assemblies. Feature: IEC Rated certification and reliable protection. Business Impact: Enhances regulatory compliance and reduces risk of non-conformance during audits, elevating overall plant safety. Application: Global installations with strict safety standards. Feature: Catalog Notes indicate AC/DC operability and circuit-breaker tripping on power loss. Business Impact: Predictable shutdown behavior safeguards motors and power circuits, reducing unplanned downtime and maintenance costs. Application: Critical load protection in process lines and packaging equipment. Feature: 1-year warranty policy. Business Impact: Procurement risk reduction and predictable support framework, improving total cost of ownership. Application: Asset-heavy facilities seeking reliable long-term partner support.
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FAQs
The UVR250VDC is designed to work with the W-VAC family and W-VACiMB modules, enabling straightforward integration into standard Eaton protection schemes. Its 220-250 V DC rating matches common DC bus designs, and its compact 8x6x3 in footprint fits typical enclosure layouts. This compatibility minimizes rewiring, reduces commissioning time, and simplifies spare-part provisioning for ongoing maintenance.
When the DC supply voltage falls outside the 220-250 V DC range or is lost, the UVR250VDC triggers the open circuit breaker action, isolating the affected circuit. This protects downstream equipment from abnormal voltage conditions, reduces arcing and contact wear, and helps prevent cascading faults in the control system.
Yes. The catalog notes confirm that the device can operate with both direct and alternating current. This dual compatibility provides installation flexibility in mixed-power plants, simplifies stocking, and supports various control architectures without sacrificing protection performance.
The UVR250VDC is IEC Rated, aligning with international safety and reliability standards. This certification supports global deployments and regulatory compliance for electrical protection devices. Additionally, Eaton’s warranty adds a layer of procurement confidence, reducing risk during the first year of operation.
The relay minimizes downtime by delivering fast, predictable tripping on power disturbances, protecting motors and control circuits. Its W-VACiMB compatibility reduces wiring complexity, while enclosure-friendly dimensions speed installation and retrofit projects. A one-year warranty plus reliable IEC-rated performance lowers lifecycle costs and improves overall plant availability.