Eaton DCU2104FRM Heavy Duty DC Disconnect - NEMA 3R
Part Number: DCU2104FRM
Quick Summary
Eaton heavy duty DC disconnect is designed to isolate solar DC circuits safely and reliably. For installers and operators, navigating high-voltage DC protection without robust equipment can slow projects and raise risk. This unit complies with NEC 690 per UL 1741 and UL 98B, and features a NEMA 3R enclosure for outdoor readiness in harsh environments. With a 200 A rating, 2 circuits, and 1000 VDC capability, it delivers scalable PV protection while reducing hardware complexity and maintenance costs. The design supports easy serviceability and integration with 300 MCM-#6 conductors, helping minimize downtime and maximize system uptime.
Product Information
Extended Description
DCU2104FRM Eaton: Eaton Heavy duty DC disconnect, 200 A, NEMA 3R, 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 3r, 2, Fusible, System:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU2104FRM
UPC
786685625706
Product Length/Depth
37.5 in
Product Height
11.5 in
Product Width
19 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
NEC 690 per UL 1741 UL 98B
Type
DC disconnect/ungrounded system
Amperage Rating
200 A
Number of circuits
2
Maximum voltage
1000 VDC
NEMA rating
NEMA 3R
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 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature: 200 A two-circuit design delivers scalable solar DC distribution for mid-to-large PV arrays. Business Impact: Enables higher system capacity without multiple devices, reducing component count and installation time. Application: PV arrays and DC bus protection where space is constrained or streamlined protection is desired. Feature: Fusible protection provides safe fault isolation. Business Impact: Enhances compliance with NEC 690 requirements and improves safety margins, lowering risk during maintenance. Application: Solar inverters and DC combiner outputs where rapid fault clearing matters. Feature: NEMA 3R enclosure with painted galvanized steel offers outdoor durability. Business Impact: Enables rooftop and outdoor installations with reliable protection against weather, reducing enclosure corrosion concerns. Application: Outdoor solar sites exposed to moisture and dust. Feature: Wide conductor compatibility (LC, SR, EG) simplifies field wiring. Business Impact: Reduces termination time and error-prone splices, lowering commissioning costs. Application: Connection of 300 kcmil-#6 or larger conductors and small-gauge control wiring. Feature: 37.5 in length, 11.5 in height, 19 in width, 45 lb weight; Power and footprint planning. Business Impact: Predictable enclosure footprint aids in equipment rack and cabinet planning, improving install efficiency. Application: System layout for utility-scale and commercial PV projects. Feature: 1-year warranty (or 18 months from shipment) provides procurement confidence. Business Impact: Lower total cost of ownership with documented post-sale support. Application: Maintenance planning and spares stocking.
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FAQs
The device supports LC wiring as In 300 kcmil-#6 out 300 kcmil-#6, SR wiring as In 300 kcmil-#6 out 300 kcmil-#6, and EG wiring as In #4-#14 AWG out 1/0-#14. This means you can connect large PV array feeders and smaller control circuits within a single enclosure. Plan for appropriate torque specs and shielded routing to maintain 1000 VDC system integrity.
Key specs include a 200 A amperage rating, 2 circuits, maximum voltage and system voltage of 1000 VDC, and fusible protection. The unit is designed for solar applications and a NEMA 3R enclosure, providing reliable isolation and protection in both indoor and outdoor environments.
Yes. The DCU2104FRM features a NEMA 3R enclosure with painted galvanized steel, making it suitable for outdoor solar sites. Its robust protection and weather-resilient construction support rooftop and ground-mounted PV systems while maintaining safety and compliance under varied environmental conditions.
The unit complies with NEC 690 aligned to UL 1741 and UL 98B, ensuring adherence to solar-specific electrical protection and overcurrent guidelines. This helps streamline regulatory approvals for PV installations and enhances safety in electrical distribution.
Eaton offers a warranty of one year from installation or eighteen months from shipment, whichever comes first. This reduces total cost of ownership, supports maintenance planning, and provides assurance for procurement and long-term system uptime in solar deployments.