Eaton DCU1063FPM DC Disconnect - NEMA 4 Fusible
Part Number: DCU1063FPM
Quick Summary
Eaton DCU1063FPM DC disconnect provides rugged, single-circuit protection for 600 VDC solar systems. In demanding outdoor installations, engineers need a reliable, easy-to-install solution that minimizes downtime. Certified to NEC 690 per UL 1741 and UL 98B, with a NEMA 4 enclosure, it supports PV safety and long-term reliability. With fusible protection and a compact footprint, it reduces wiring complexity and installation costs in commercial and industrial solar projects. Its 100 A rating and lug capacity for #14-1/0 AWG provide scalable current handling to match system design. This combination supports space-limited rooftop and utility-scale installations.
Product Information
Extended Description
DCU1063FPM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,100A,NEMA 4,Painted steel,Fusible,Ungrounded,#14-1/0 AWG lug capacity, #14-1/0 AWG solid return,600 Vdc,1,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1063FPM
UPC
786685557052
Product Length/Depth
25.5 in
Product Height
9 in
Product Width
13.25 in
Product Weight
27 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
100A
Number of circuits
1
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4
Protection
Fusible
Application
Solar
Main lug wire size
#14-1/0 AWG lug capacity, #14-1/0 AWG solid return
System voltage
600 VDC per pole
Voltage rating
600 VDC
Series
DC Photovoltaic Applications
Enclosure
NEMA 4
Enclosure material
Painted galvanized steel
Fuse configuration
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature: Heavy-duty DC disconnect construction with fusible protection. Impact: This protection path isolates the PV circuit, minimizes fault propagation, and reduces maintenance by providing a clear shut-off point. Application: Ideal for solar PV arrays, inverter cabinets, and remote power centers where reliable DC isolation is critical. Feature: NEMA 4 painted galvanized steel enclosure. Impact: Weatherproof sealing and corrosion resistance extend service life in outdoor environments and lower enclosure-related upkeep. Application: Suitable for rooftop installations and exposed ground-mounted solar facilities, performing in rain, dust, and temperature swings. Feature: 100 A amperage rating and single-circuit design. Impact: Aligns with common PV subcircuit sizing, simplifying wiring and reducing interconnections that can fail. Application: Central DC disconnects in commercial solar projects or utility-scale arrays seeking straightforward protection. Feature: Ungrounded main lug connections with lug capacity for #14-1/0 AWG. Impact: Streamlines field terminations, supports typical PV conductors, and improves termination reliability. Application: Ungrounded DC disconnects in ungrounded PV systems and energy storage configurations. Feature: Certifications and standards compliance. Impact: UL 1741 NEC 690 compatibility, UL 98B enclosure certification, and related codes facilitate audits and interconnection approvals. Application: Supports utility interconnection requirements and simplifies customer acceptance for solar installations. Feature: Compact footprint with dimensions 25.5 in L x 13.25 in W x 9 in H. Impact: Saves valuable electrical room space, enabling flexible mounting and quicker installation. Application: Retrofit and new-build solar switchgear layouts where space is at a premium. Feature: Manageable weight for field handling. Impact: Easier installation and service, reducing labor time and on-site requirements. Application: Suitable for rooftop and ground-mounted PV installations.
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FAQs
Plan for a single-circuit disconnect with lug capacity for #14-1/0 AWG, ensure the 600 VDC per-pole rating is matched to the array, and follow NEC 690 along with UL 1741/UL 98B guidelines. Provide adequate clearances around the 25.5 in length, 13.25 in width, and 9 in height enclosure, and verify proper NEMA 4 sealing for outdoor duty.
The 100 A rating matches typical PV subcircuits, enabling a single, centralized DC disconnect to protect the array and inverters. Fusible protection provides a well-defined fault path, improving fault isolation, arc‑resistance during maintenance, and overall system safety while simplifying compliance with PV codes.
Yes. The unit’s NEMA 4 enclosure and rugged painted steel housing are designed for outdoor exposure, making it appropriate for both rooftop and ground-mounted PV installations. Its compact footprint helps in tight electrical rooms or retrofit projects, while the 600 VDC rating covers a wide range of system configurations.
It complies with NEC 690 as per UL 1741 and UL 98B, providing essential PV safety and enclosure integrity credentials. These certifications streamline utility interconnection reviews, support code compliance, and reduce risk during commissioning and audits for solar installations.
Eaton lists a standard warranty as 1 year from installation or 18 months from shipment, whichever occurs first. Regular inspection of lug terminations and enclosure seals is recommended, with attention to corrosion resistance and protection performance in outdoor environments to sustain long-term reliability.