Eaton DCU2103UXM DC disconnect - UL 98B/NEMA 4X
Part Number: DCU2103UXM
Quick Summary
DCU2103UXM is a heavy-duty DC disconnect designed for photovoltaic solar systems and 1000 VDC distribution. It helps operators protect high-voltage PV arrays and outdoor DC networks from faults while minimizing downtime in challenging environments. The unit meets UL 98B and NEC 690 per UL 1741 standards and uses a NEMA 4X enclosure of 316 stainless steel for weather and corrosion resistance. Ungrounded, non-fusible by design, it simplifies safety protocols and maintenance while supporting code compliance. For solar installers and plant engineers, this solution delivers reliable isolation, easier installation, and enduring performance in industrial and utility-scale PV projects. The DCU2103UXM's two circuits and 100 A rating align with common industry configurations, delivering scalable protection as solar capacity grows.
Product Information
Extended Description
DCU2103UXM Eaton: Eaton Heavy duty DC disconnect, 100 A, NEMA 4X, Grade 316 stainless steel, Non-fusible, Ungrounded, #14-1/0 AWG lug capacity, #14-1/0 AWG solid return, 2, DC photovoltaic applications, Rating:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2103UXM
UPC
786685558134
Product Length/Depth
10.22 in
Product Height
18.95 in
Product Width
16.13 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
2
Ground
Ungrounded
Protection
Non-fusible
Application
Solar
Main lug wire size
#14-1/0 AWG lug capacity, #14-1/0 AWG solid return
System voltage
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 4X
Enclosure material
316 stainless steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - DCU2103UXM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Two circuits and a 100 A rating provide a compact yet robust means to isolate two solar DC feeds. Business impact: reduces fault exposure and helps maintain safe lockout/tagout during maintenance. Application: ideal for PV arrays and DC distribution in rooftop and ground-mounted solar installations. Feature: NEMA 4X enclosure crafted from 316 stainless steel for corrosion resistance. Business impact: extends service life in outdoor, harsh environments, lowering replacement costs. Application: outdoor solar farms, exposed utility sites, and harsh industrial settings. Feature: Main lug capability for #14-1/0 AWG conductors and solid returns. Business impact: flexible wiring options reduce field rework and simplify installation. Application: PV combiner boxes, DC distribution panels, and modular solar systems. Feature: Ungrounded, non-fusible design. Business impact: simplifies safety protocols, minimizes arc exposure, and speeds commissioning. Application: solar PV arrays and non-fusible DC isolation points in harsh environments. Feature: Certifications UL 98B and NEC 690 per UL 1741 with a 1000 VDC rating. Business impact: ensures regulatory compliance for utility-scale and commercial projects. Application: industrial solar installations requiring code-conforming isolation. Feature: Dimensions and weight enable precise space planning. Business impact: predictable mounting footprints and transport logistics for field crews. Application: equipment rooms, outdoor enclosures, and solar canopies. Warranty and support: Eaton’s policy 25-000 provides a one-year minimum from installation or eighteen months from shipment, guiding service and parts planning for ongoing projects.
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FAQs
Yes. The DCU2103UXM is rated for 1000 VDC and supports two ungrounded circuits in a non-fusible configuration. It uses #14-1/0 AWG lugs for both the main terminals and solid returns, accommodating standard PV array wiring and simplifying field connections during installation or expansion.
The unit complies with UL 98B and NEC 690 per UL 1741, and it uses a NEMA 4X enclosure with 316 stainless steel construction. These certifications and materials ensure code compliance, weather resistance, and durability for outdoor solar installations and harsh industrial environments.
Yes. The DCU2103UXM features a NEMA 4X enclosure and 316 stainless steel construction, designed for outdoor exposure. This combination provides superior corrosion resistance and weatherproof protection, making it suitable for rooftop solar arrays, ground-mounted systems, and other outdoor PV installations.
Plan for a two-circuit layout with ungrounded, non-fusible protection. Ensure wiring uses #14-1/0 AWG lugs and solid returns, account for a footprint of approximately 16.13 in by 18.95 in by 10.22 in, and handle a weight around 37 lb. Verify mounting orientation per site conditions and maintain clearances for 1000 VDC operation.
The product is covered by Eaton’s Selling Policy 25-000, offering one year from installation or 18 months from shipment, whichever occurs first. For field support, spare parts, and documentation, contact Eaton and consult the specification sheet to ensure continued compliance and serviceability.