UR4 Series Digital SwitchgearMedium-Voltage Switchboard
The UR4 series is a joint venture product with Eaton, incorporating core Eaton technology. This intelligent, metal-enclosed switchgear is a proven solution for power distribution in power plants, urban infrastructure, and industrial systems.
-
Since 1996, we have collaborated in producing UR4 and other cubicle models as China's sole authorized manufacturer, with around 100,000 switchgears sold cumulatively. Daqo Intelligent Electric continues this, with products benchmarking ZS1, PIX, NXAirS and other JV brands, and matching Eaton's NVU, 150VCP, E-VAC, W-VACi circuit breakers.
Core Advantages & Features
-
Certified ReliabilityASTA, GOST, and NB/T 42044 certified for intelligent switchgear performance.
01 -
Precision AssemblyCubicle installed with pneumatic tools ensure high precision and interchangeability.
02 -
Comprehensive Five-Proof InterlockingPrevents misoperation with door-closed and lockable operation functions.
03 -
High Rated CurrentWithdrawable switchgear supports up to 5000A (50kA dynamic peak: 137kA).
04 -
Strong Breaking CapacityFixed type up to 6300A, 63kA breaking capacity.
05 -
Superior Safety PerformanceInternal arc fault level (AFLR) of 50 kA / 1s guarantees operator protection.
06 -
Smart & Widely ApplicableThe product has passed the NB/T 42044 intelligent switchgear type test and is widely used in power grids, petrochemical plants, power plants, and other projects.
07 -
High-Altitude CompatibleUsed in power grids, petrochemical, and industrial facilities up to 3000 m altitude.
08 -
Robust Environmental ResistanceThe product has achieved tests for condensation, salt spray, and contamination.
09
Technical Parameters
| Basic Parameters | |||
|---|---|---|---|
UR4-12 | UR4-17.5 | UR4-24 | |
| Rated voltage | 12 kV | 17.5 kV | 24 kV |
Rated power frequency withstand voltage | 42 kV/1min | 38 kV/1min | 65 kV/1min |
Rated lightning impulse withstand voltage | 75 kV | 95 kV | 125 kV |
Rated frequency | 50/60 Hz | ||
Rated short-time withstand current | 25~50 kA / 4s | 25~50 kA / 4s | 25~31.5 kA / 4s |
Rated peak withstand current | 63~125 kA | 63~125 kA | 63~80 kA |
Busbar rated current | 630~5000 A | 630~4000 A | 630~3150 A |
Internal fault arc withstand current | 50 kA / 1s | 40 kA / 1s | 31.5 kA / 1s |
Weight | 800~1200 kg | 800~1200 kg | 900~1300 kg |
Protection level | Enclosure IP4X, Compartment IP2X, IK10 | ||
Product Documents
-
Product Brochure
-
Product Certification
-
UR4 Series Digital Switchgear
2025-11-16
Download PDF
-
UR4-12-3150-40_ASTA Certificate of Type Tests
2026-01-04
Download PDF
-
UR4-12-2500-50_ASTA_Type Tests
2026-01-04
Download PDF
-
UR4-12-1250-40_ASTA_Test Report
2026-01-04
Download PDF
-
UR4-12-1250-31.5_ASTA Certificate of Type Tests
2026-01-04
Download PDF
The company consistently maintains robust innovative vitality, standing at the forefront of the industry and driving its advancement. Through cutting-edge technologies and products, it achieves goals of energy conservation, environmental protection, quality enhancement, and consumption reduction, continuously contributing to the development of a resource-efficient and environmentally friendly society.
