Eaton DCU3063UWM DC Disconnect - NEMA 4X 600 VDC
Part Number: DCU3063UWM
Quick Summary
Eaton DCU3063UWM is a heavy-duty DC disconnect designed to safely isolate ungrounded DC in solar PV systems. For engineers and procurement teams, unreliable outdoor DC isolation creates safety risks, downtime, and costly field work. This unit combines rugged construction with compliance to critical standards, including UL 98B, NEC 690 per UL 1741, and a NEMA 4X enclosure, ensuring dependable performance in harsh environments. The 304 stainless steel enclosure resists corrosion, while the non-fusible design simplifies maintenance and reduces fault propagation during service. Rated for 600 VDC and 100 A across three circuits, it supports robust PV configurations and scalable system layouts. Its clear labeling and solid lug connections streamline installation, testing, and ongoing operations, delivering long-term total cost of ownership benefits.
Product Information
Extended Description
DCU3063UWM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,100A,NEMA 4X,Grade 304 stainless steel,Non-fusible,Ungrounded,#14-1/0 AWG lug capacity, #14-1/0 AWG solid return,600 Vdc,3,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU3063UWM
UPC
786685557564
Product Length/Depth
30 in
Product Height
9.5 in
Product Width
18 in
Product Weight
37 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
UL 98B NEC 690 per UL 1741
Catalog Notes
Not all configurations for ampere rating and number of circuits are available. All circuit configurations can be found in the product dimension tables.
Type
DC disconnect/ungrounded system
Amperage Rating
100A
Number of circuits
3
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4X
Protection
Non-fusible
Application
Solar
Main lug wire size
#14-1/0 AWG lug capacity, #14-1/0 AWG solid return
System voltage
600 VDC per pole
Voltage rating
600 VDC
Series
DC Photovoltaic Applications
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: 100 A amperage rating with 3 circuits and non-fusible protection → Business Impact: Safe, reliable isolation of high‑current DC in PV arrays reduces fault propagation and minimizes service interruptions. Application: Ideal for 600 VDC solar installations requiring clear, safe disconnection points. Feature: Ungrounded system integration → Business Impact: Enables safer commissioning and maintenance of ungrounded DC photovoltaic circuits by providing a dedicated, controlled disconnect. Application: Solar farms and rooftop PV systems with ungrounded configurations.Feature: NEMA 4X enclosure and 304 stainless steel construction → Business Impact: Exceptional corrosion resistance and outdoor durability lower maintenance costs and extend service life. Application: Outdoor PV installations in harsh or humid environments.Feature: Main lug capacity for #14-1/0 AWG wires → Business Impact: Flexible, code-compliant wiring options reduce field wiring time and error risk. Application: PV strings and combiner connections requiring robust lug solutions.Feature: 600 VDC rating per pole and 100 A capacity → Business Impact: Supports high-voltage PV arrays with safe, code-compliant disconnection points, improving system safety and O&M efficiency. Application: Large-scale solar and battery-integrated DC networks.Feature: Non-fusible design and UL/NEC certifications → Business Impact: Simplified maintenance plan and regulatory compliance minimize downtime and audit findings. Application: Solar installations governed by NEC 690 and UL 98B requirements.
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FAQs
DCU3063UWM is designed as a standalone DC disconnect for ungrounded solar circuits with three circuits and a 100 A rating. It uses main lug connections compatible with #14-1/0 AWG conductors, simplifying wiring to typical PV bus bars and string combiners. The rugged NEMA 4X enclosure suits outdoor deployments and field servicing.
Key specs include a 100 A amperage rating, 3 circuits, and a maximum voltage of 600 VDC per pole. The device is ungrounded and non-fusible, intended for solar PV applications, with a 304 stainless steel NEMA 4X enclosure. These values support reliable, code-compliant DC isolation in outdoor PV systems.
Yes. The DCU3063UWM uses a 304 stainless steel enclosure rated NEMA 4X, offering enhanced corrosion resistance for outdoor solar installations. This makes it well-suited for rooftops, carport arrays, and exposed ground-mount setups where salt spray or humidity could affect equipment longevity.
The unit complies with UL 98B and NEC 690 per UL 1741 for PV applications, ensuring safety and regulatory alignment. Documentation includes the Eaton Specification Sheet for DCU3063UWM and installation guidance, aiding audits and compliance reviews in solar projects.
The non-fusible design reduces replacement complexity, while the rugged 304 stainless enclosure and 3‑circuit configuration minimize service downtime. A warranty is offered under Eaton’s policy (one year from installation or 18 months from shipment), supporting predictable maintenance planning and a favorable total cost of ownership (TCO) for PV deployments.