Eaton DCU1155UDM-000W DC disconnect - UL Listed
Part Number: DCU1155UDM-000W
Quick Summary
The Eaton DC disconnect is a reliable high-current isolator designed for 1500 VDC DC power systems in industrial environments. Engineers often struggle with safe isolation, space constraints, and regulatory traceability when servicing large DC buses. This unit is UL Listed and designed for a NEMA 12/3R enclosure, with a robust 1500 VDC rating for demanding applications. By combining rugged enclosure design and a clear upper window, it supports fast maintenance and reliable uptime for energy storage, solar, and motor-control systems. The enclosure's painted galvanized steel construction withstands industrial environments, helping you meet safety and environmental requirements with less risk of corrosion.
Product Information
Extended Description
DCU1155UDM-000W Eaton: Eaton, 1500 VDC 1 Ckt, 400A, Non-Fusible, N12 3R,,,,
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1155UDM-000W
UPC
786689791810
Product Length/Depth
8.15 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
132.2 lb
Certifications
UL Listed
Type
DC unground
Amperage Rating
400 A
Number of circuits
1
Protection
Non-fusible
Voltage rating
1500 VDC
Enclosure
NEMA 12/3R
Enclosure material
Painted galvanized steel
Window
Upper
Protection
Non-fusible
Energy transition switches brochure - 1500 Vdc
Switching Devices Flex Center
Switching Devices Flex Center
Eaton switches fused string multi-input application
Eaton switches fused string multi-input application
Feature: High voltage and current rating enables direct isolation of a single DC circuit without fusible interlocks, delivering a clear safety boundary in demanding environments. Business Impact: Engineers reduce spare fuse stocking and simplify protection scheme design, which shortens project timelines and lowers lifecycle costs. Application: Ideal for 1500 VDC DC buses in energy storage, solar installations, and heavy equipment drive systems, where a rugged, non-fusible disconnect is preferred. Paragraph continues with further insights on installation compatibility and long-term reliability. Feature: Non-fusible, single-circuit configuration minimizes maintenance points and eliminates fuse-related nuisance trips. Business Impact: Improves system availability and reduces field service time when isolating or testing a line. Application: Suitable for data centers, industrial modular plants, and DC link isolation tasks. Feature: NEMA 12/3R enclosure with painted galvanized steel delivers robust environmental protection. Business Impact: Extends equipment life in dusty, moist, or corrosive plant spaces, reducing replacement costs. Application: Supports indoor electrical rooms, utility buildings, and outdoor or semi-enclosed areas. Feature: Upper-view window provides quick, at-a-glance status verification without opening the enclosure. Business Impact: Accelerates maintenance rounds and enhances operator safety by confirming disconnect status before work. Application: Critical in solar farms, energy storage arrays, and process plants with frequent line checks. Feature: Compact dimensions and weight—8.15 in depth, 24.12 in width, 57.47 in height, and 132.2 lb—help with space planning. Business Impact: Easier integration into standard electrical rooms and cabinets, reducing retrofit costs. Application: New builds and retrofits across manufacturing facilities.
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FAQs
The DCU1155UDM-000W is rated for 1500 VDC and 400 A, configured for a single circuit in a non-fusible DC disconnect. It uses a DC unground design and installs in a NEMA 12/3R enclosure with a painted galvanized steel body. The catalog number and UPC simplify procurement, and the upper window aids in straightforward status verification during installation and commissioning.
A non-fusible disconnect provides a clear isolation point without internal fuses, reducing maintenance points and mitigating fuse-related downtime. This simplifies fault isolation, speeds routine testing, and lowers spare-part consumption. For installation teams, it means quicker turnarounds during commissioning and safer, more predictable maintenance procedures in DC power trains.
Yes. The DCU1155UDM-000W is designed for high-current, high-voltage DC applications such as solar arrays, energy storage systems, and industrial DC buses. Its 1500 VDC rating, 400 A capacity, and non-fusible, single-circuit configuration make it ideal for isolating a DC section quickly while preserving system integrity and safety during maintenance or fault isolation.
The unit is UL Listed, ensuring conformity with applicable electrical safety standards. It features a NEMA 12/3R enclosure for environmental protection against dust and moisture in indoor or semi-enclosed spaces. The combination of UL listing and rugged enclosure supports regulatory compliance in industrial facilities and energy projects.
The heavy-duty, single-circuit, non-fusible design reduces parts to stock and simplifies preventive maintenance routines, contributing to higher uptime. Durable painted galvanized steel enclosures resist corrosion in harsh environments, lowering replacement costs. Its straightforward, clear-status window and compact footprint streamline installation, inspection, and ongoing lifecycle management in energy storage, solar, and manufacturing DC systems.