Eaton DCU1155FWM-000W DC disconnect - UL Listed
Part Number: DCU1155FWM-000W
Quick Summary
DCU1155FWM-000W is a heavy-duty DC disconnect designed for safe isolation in high-current 1500 VDC power systems. This solution addresses downtime and maintenance challenges by providing a robust, single-circuit switch with fusible protection. UL Listed, NEMA 4X enclosure, and 304 stainless steel construction ensure reliable performance in demanding environments. Designed for solar, energy storage, and industrial power distribution, it delivers safer maintenance, easier compliance, and long-term total cost of ownership benefits.
Product Information
Extended Description
DCU1155FWM-000W Eaton: Eaton, 1500 VDC 1 Ckt, 400A, Fusible, N4X SS…,
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1155FWM-000W
UPC
786689791803
Product Length/Depth
8.15 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
135.2 lb
Certifications
UL Listed
Type
DC unground
Amperage Rating
400 A
Number of circuits
1
Protection
Fusible
Voltage rating
1500 VDC
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Window
Upper
Protection
Fusible
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Feature: 1500 VDC, 400 A, 1 circuit fusible protection. Business Impact: Enables safe, code-compliant isolation for high-voltage DC power with precise fuse protection to minimize arc flash risk. Application: Suitable for high-power DC distribution in manufacturing lines and energy storage systems. The design supports quick maintenance turnaround while maintaining system integrity.Feature: NEMA 4X stainless steel enclosure. Business Impact: Weatherproof and corrosion-resistant housing reduces enclosure-related downtime and extends service life in outdoor or washdown environments. Application: Outdoor substations, battery storage installations, and harsh factory floors benefit from durable protection.Feature: Upper window and compact depth of 8.15 in. Business Impact: Easy visual verification of fuse status without partial disassembly, improving safety checks and maintenance planning. Application: Retrofit and new builds where space is at a premium and rapid status checks are needed.Feature: UL Listed with 304 stainless enclosure. Business Impact: Ensures regulatory compliance and traceable quality, simplifying procurement and audits. Application: Critical electrical protection in regulated industries and highly controlled manufacturing setups.Feature: Weight and footprint support robust installation. Business Impact: Despite a substantial 135.2 lb mass, the unit supports reliable mounting in fixed installations with predictable service access. Application: Heavy-duty installations requiring solid mechanical strength and dependable, long-life performance.
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FAQs
The DCU1155FWM-000W is compatible with 1500 VDC systems and supports a single 400 A circuit with fusible protection. It uses a 304 stainless steel NEMA 4X enclosure, making it suitable for industrial, outdoor, and washdown environments. Ensure mounting to a rigid subpanel or enclosure backplane with appropriate clearances for maintenance access.
Key specs include 1500 VDC voltage rating, 400 A amperage rating, 1 circuit, fusible protection, and a NEMA 4X enclosure. It is designed for DC ungrounded systems and provides UL-listed reliability with a heavy-duty 8.15 in depth footprint and a 24.12 in width for space planning.
Yes. The DCU1155FWM-000W is UL Listed and housed in a NEMA 4X stainless steel enclosure, which provides enhanced protection against water, dust, and corrosion. This makes it suitable for outdoor installations and harsh industrial environments where regulatory compliance is essential.
A fusible DC disconnect provides overcurrent protection by interrupting current flow when a fuse operates, limiting fault energy and reducing arc flash risk. It also facilitates selective protection, making maintenance safer and enabling quicker fault isolation in high-current DC networks common in solar, storage, and manufacturing applications.
Plan for a footprint of approximately 24.12 in wide by 57.47 in high and 8.15 in depth. The unit weighs about 135.2 lb, so use appropriate lifting and anchoring hardware. Provide rear or side access for fuse status verification via the upper window, and ensure wiring clearance and venting requirements are met per facility standards.