Eaton DCU2104FXM DC Disconnect - NEMA 4X 1000V
Part Number: DCU2104FXM
Quick Summary
Eaton heavy duty DC disconnect is designed to safely interrupt and isolate solar DC power up to 1000 VDC. In solar installations, space constraints and harsh environments demand a robust, corrosion-resistant disconnect. This unit carries UL 98B and NEC 690 per UL 1741 standards and is enclosed in a NEMA 4X 316 stainless steel housing. With 200 A capacity, two circuits, and 1000 VDC rating, it delivers reliable protection while simplifying installation and compliance. Engineers benefit from its 316 stainless steel enclosure for durability in polluted or coastal environments. Its fusible configuration supports PV system protection while enabling straightforward field maintenance and fast fault isolation.
Product Information
Extended Description
DCU2104FXM Eaton: Eaton Heavy duty DC disconnect, 200 A, NEMA 4X, Grade 316 stainless steel, Fusible, LC: In 300 MCM-#6 out 300 MCM-#6. SR: in 300 MCM-#6 out 300 MCM-#6. EG: in #4-#14 AWG out 1/0-#14, Max:1000 Vdc, NEMA 4X, 2, Fusible, System:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2104FXM
UPC
786685625737
Product Length/Depth
35.38 in
Product Height
11.63 in
Product Width
16.54 in
Product Weight
45 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
Type
DC disconnect/ungrounded system
Amperage Rating
200 A
Number of circuits
2
Maximum voltage
1000 VDC
NEMA rating
NEMA 4X
Protection
Fusible
Application
Solar
Main lug wire size
LC: In 300 kcmil-#6 out 300 kcmil-#6. SR: in 300 kcmil-#6 out 300 kcmil-#6. EG: in #4-#14 AWG out 1/0-#14
System voltage
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 4X
Enclosure material
316 stainless steel
Fuse configuration
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature: 200 A amperage rating with two circuits. Business impact: supports higher current PV strings, reduces the number of disconnects, and minimizes wiring complexity, leading to faster installation and reduced labor costs. Application: useful for mid- to large-scale solar arrays where high current in a compact disconnect is required. Feature: Maximum voltage of 1000 VDC. Business impact: enables safe, code-compliant operation across modern PV installations and grid-tied applications. Application: rooftop and utility-scale solar systems using up to 1000 VDC. Feature: NEMA 4X enclosure and 316 stainless steel construction. Business impact: superior outdoor durability and corrosion resistance in coastal or industrial environments, lowering maintenance intervals. Application: outdoor PV housings and harsh environments. Feature: Fusible protection configuration. Business impact: enhances system protection and fault isolation, reducing arc energy and equipment damage. Application: PV arrays with fusible protection schemes. Feature: Wire size compatibility LC SR EG for main lug connections. Business impact: flexible wiring configurations (in 300 kcmil-#6; out 300 kcmil-#6 for LC/SR; in #4-#14 AWG out 1/0-#14 for EG) enabling easier integration with existing conduits. Application: diverse PV string terminations and installation layouts. Feature: Certifications UL 98B and NEC 690 per UL 1741. Business impact: regulatory compliance and safer operation, easing procurement for regulated projects. Application: residential, commercial, and utility-scale PV deployments. Feature: Warranty with Eaton policy 25-000 (one year from installation or 18 months from shipment). Business impact: predictable post-sale support and total cost of ownership management. Application: project handover and service planning.
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FAQs
The DCU2104FXM supports up to 200 A with two circuits and a 1000 VDC rating, suitable for two-string or multi-string PV configurations. Line connections use LC wiring up to 300 kcmil-#6, stress-relieved SR connections similarly rated, and EG options accommodate smaller conductors from #4-#14 AWG to 1/0-#14. The 35.38 in length and 45 lb weight aid in layout planning and mounting in standard electrical spaces.
Key ratings include 200 A amperage, 1000 VDC maximum voltage, two circuits, and NEMA 4X enclosure protection. Certifications include UL 98B and NEC 690 per UL 1741, ensuring compliance with critical PV safety standards. These specifications support reliable operation in both rooftop and industrial solar installations while aligning with utility and code requirements.
Yes. The unit features a NEMA 4X enclosure constructed from 316 stainless steel, designed to withstand outdoor exposure, humidity, and corrosive environments. This makes it well-suited for rooftop deployments, coastal facilities, and other harsh environments where reliable protection and long service life are essential for continuous PV operation.
Eaton provides a warranty under policy 25-000: one year from installation or eighteen months from shipment, whichever comes first. This warranty supports ongoing performance and maintenance planning, with typical service channels through Eaton and authorized distributors for replacement parts, service guidance, and field support when needed.
Line side connections (LC) support up to 300 kcmil-#6, while source side (SR) can also handle 300 kcmil-#6 to maintain consistent current paths. External ground (EG) accepts #4-#14 AWG up to 1/0-#14 for smaller control or signaling conductors. This versatility enables flexible integration with existing PV arrays and wiring schemes while meeting insulation and current-carrying requirements.