Eaton DCU2101UWM DC Disconnect - NEMA 4X, 1000 VDC
Part Number: DCU2101UWM
Quick Summary
The Eaton heavy duty DC disconnect isolates DC circuits in solar PV installations. Outdoor DC protection is plagued by corrosion, moisture, and miswiring risk; this unit delivers rugged protection and reliable isolation. Certified for NEC 690 per UL 1741 and UL 98B, with a NEMA 4X enclosure to withstand harsh outdoor environments. For system integrators and procurement teams, the 30 A, two-circuit design simplifies solar DC layouts, reduces wiring complexity, and accelerates compliant installations. The 304 stainless steel enclosure and 1000 VDC rating reinforce safety and reliability in demanding outdoor environments, lowering long-term maintenance costs. Trust Eaton for consistent solar performance and predictable lifecycle costs.
Product Information
Extended Description
DCU2101UWM Eaton: Eaton Heavy duty DC disconnect, 30 A, NEMA 4X, Grade 304 stainless steel, Non-fusible, Ungrounded, #14-#2 AWG lug capacity, #14-#2 AWG solid return, 2, DC photovoltaic applications, Rating:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2101UWM
UPC
786685558080
Product Length/Depth
10.22 in
Product Height
19.08 in
Product Width
12.88 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
NEC 690 per UL 1741 UL 98B
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
30A
Number of circuits
2
Ground
Ungrounded
Protection
Non-fusible
Application
Solar
Main lug wire size
#14-#2 AWG lug capacity, #14-#2 AWG solid return
System voltage
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
The 30 A amperage rating and two-circuit configuration reduce wiring and panel real estate, delivering a compact DC isolation solution. This simplifies solar PV layouts, speeds commissioning, and lowers field labor costs while preserving safe, non-fusible protection. Main lug capacity supports #14-#2 AWG lugs and solid returns, which minimizes termination errors and ensures robust connections under vibration in rooftop and ground-mounted arrays. The ungrounded design with non-fusible protection reduces fault pathways and simplifies code compliance during installation, keeping projects aligned with NEC requirements. A rugged NEMA 4X enclosure constructed from 304 stainless steel delivers outdoor durability, corrosion resistance, and moisture sealing for longer service life in harsh environments. With a 1000 VDC system rating, the DCU2101UWM accommodates high‑voltage PV strings, supporting broader industrial and commercial deployments. Warranty and catalog notes guide configuration planning, while installation remains straightforward thanks to standard wire sizes and a proven heavy‑duty switch. These attributes collectively drive faster commissioning, lower maintenance, and reliable long-term operation in solar power systems.
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FAQs
The DCU2101UWM is designed for 1000 VDC solar PV installations with a 30 A rating and two circuits. It supports #14-#2 AWG lugs for both main terminals and solid returns, is ungrounded and non-fusible, and uses a NEMA 4X 304 stainless steel enclosure for outdoor service. Always consult the product dimension tables for specific ampere configurations and circuit counts to ensure exact fit for your project.
Key specs are a 30 A amperage rating, 2 circuits, ungrounded configuration, non-fusible protection, and a 1000 VDC system voltage. These characteristics enable safe isolation of high‑voltage DC strings in solar arrays while simplifying wiring topology. The lug capacity (#14-#2 AWG) supports common PV wiring. Designers should verify enclosure dimensions and installation clearances per site codes to optimize layout and maintenance access.
Yes. The unit features a NEMA 4X enclosure made from 304 stainless steel, delivering corrosion resistance and moisture sealing for outdoor use. The rugged construction, combined with a 1000 VDC rating, makes it appropriate for rooftop and ground-mounted solar installations exposed to weather, dust, and temperature variations. Regular inspections should still be performed as part of a preventive maintenance program.
The DCU2101UWM complies with NEC 690 requirements as referenced by UL 1741 and UL 98B, ensuring safe operation in PV systems and protection of building circuits. These certifications help meet national and local electrical codes, streamline contractor approvals, and provide documented performance assurances for reliability, safety, and compatibility with solar power installations.
The unit is covered by Eaton's policy (25-000): one year from date of installation or eighteen months from shipment, whichever occurs first. Dimension notes indicate configurations vary by amperage and circuit count. For project planning, confirm the exact configuration with the product data tables, and schedule routine inspections to verify lugs, terminations, and enclosure seals, which helps sustain performance and minimize unplanned downtime.