Eaton DCU1104UPM DC disconnect - NEMA 4, 200 A, 1000 VDC
Part Number: DCU1104UPM
Quick Summary
DCU1104UPM is a heavy duty DC disconnect that provides safe isolation for solar power systems. This solution addresses common field challenges like space constraints, outdoor exposure, and maintaining regulatory compliance during maintenance. It carries UL 98B and NEC 690 per UL 1741 certifications and is built to endure harsh environments with a NEMA 4-rated, painted galvanized steel enclosure and a 1000 VDC rating. By combining rugged construction with straightforward wiring, it reduces install time and future service costs, while aligning with your facility’s reliability and safety standards. For engineers and procurement teams, this means predictable performance, easier sourcing, and clearer maintenance planning for solar DC isolation.
Product Information
Extended Description
DCU1104UPM Eaton: Eaton Heavy duty DC disconnect, 200 A, NEMA 4, Painted steel, Non-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 4, 1, Non-fusible, System:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1104UPM
UPC
786685625553
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
UL 98B NEC 690 per UL 1741
Type
DC disconnect/ungrounded system
Amperage Rating
200 A
Number of circuits
1
Maximum voltage
1000 VDC
NEMA rating
NEMA 4
Protection
Non-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 4
Enclosure material
Painted galvanized steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: 200 A, single-circuit, non-fusible DC disconnect. Business Impact: Provides robust isolation with minimal arc exposure, improving operator safety and reducing downtime during system maintenance. Application: Ideal for solar PV arrays and DC collection points where a single, reliable disconnect is required. Feature: 1000 VDC maximum voltage and 200 A rating. Business Impact: Supports high-voltage PV strings and scalable installations, enabling future expansion without needing a new disconnect. Application: Utility-scale and commercial rooftop PV projects requiring durable DC isolation. Feature: NEMA 4 enclosure and painted galvanized steel. Business Impact: Weather-resistant housing reduces corrosion risk and enables outdoor installation, lowering enclosure replacement costs. Application: Outdoor PV equipment rooms and damp/cold environments. Feature: Main lug wires accommodated by LC, SR, and EG conductors (LC: 300 kcmil-#6 in/out; SR: 300 kcmil-#6; EG: in #4-#14 AWG out 1/0-#14). Business Impact: Simplifies field wiring and stocking by covering multiple conductor sizes, reducing labor time during installation. Application: New builds and retrofit projects with mixed conductor requirements. Feature: Non-fusible design and UL 98B/NEC 690 per UL 1741 compliance. Business Impact: Enhances system safety and regulatory alignment, easing inspection and commissioning. Application: Solar PV systems in commercial facilities where code compliance is essential. Insight: The DCU1104UPM is designed to balance robust protection with installation efficiency, helping teams reduce total cost of ownership over the system lifecycle.
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FAQs
DCU1104UPM is designed for solar PV installations with a single 200 A circuit and a 1000 VDC rating. It features a NEMA 4 enclosure and supports diverse main-lug configurations (LC, SR, EG) to accommodate common field wiring sizes. This simplifies field assembly, reduces wiring errors, and accelerates commissioning in outdoor environments.
The device is rated for 200 A and a maximum of 1000 VDC, with one circuit. It is non-fusible and designed for photovoltaic applications, ensuring safe DC isolation and straightforward operation in solar power systems that require reliable disconnects in harsh conditions.
While optimized for solar PV applications, the DCU1104UPM’s heavy duty construction, 1000 VDC rating, and non-fusible design make it suitable for selective DC isolation in other low-voltage DC networks within industrial environments, provided the circuit ratings and enclosure dimensions meet the installation constraints.
DCU1104UPM carries UL 98B and NEC 690 per UL 1741 certifications, plus a NEMA 4 enclosure rating for weather resistance. These certifications support compliance during audits and inspections, particularly in outdoor solar installations, with assurances for safety, build quality, and reliability in harsh environments.
The product carries Eaton’s policy warranty of one year from installation or eighteen months from shipment, whichever occurs first. Regular inspection of the enclosure, connections, and wiring is recommended to maintain performance. The unit’s non-fusible design also simplifies replacement and reduces maintenance downtime when servicing DC circuits.