Eaton DCU3063FXM DC Disconnect - NEMA 4X, 316 SS
Part Number: DCU3063FXM
Quick Summary
DC disconnect solution from Eaton safely isolates solar arrays and ungrounded DC circuits in PV installations. Engineers face downtime and safety risks when servicing energized DC systems, especially in harsh outdoor environments. This unit meets NEC 690 per UL 1741 and UL 98B, with a NEMA 4X enclosure and 316 stainless steel construction for demanding conditions. The combination of fusible protection, 600 VDC rating, and a 3-circuit, 100A design translates to safer maintenance, regulatory compliance, and faster project timelines. Its rugged build also supports long service life in outdoor solar and industrial applications, reducing total cost of ownership while enabling straightforward field wiring and reliable disconnection.
Product Information
Extended Description
DCU3063FXM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,100A,NEMA 4X,Grade 316 stainless steel,Fusible,Ungrounded,#14-1/0 AWG lug capacity, #14-1/0 AWG solid return,600 Vdc,3,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU3063FXM
UPC
786685557656
Product Length/Depth
10.22 in
Product Height
24.95 in
Product Width
16.13 in
Product Weight
40 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
3
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 4X
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 4X
Enclosure material
316 stainless steel
Fuse configuration
Fusible
Switch type
Heavy duty
Protection
Fusible
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - DCU3063FXM
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 3 circuits with a 100A amperage rating. Business Impact: Enables safe, centralized isolation of multi-string PV configurations while handling high current loads to minimize downtime. Application: Solar and industrial DC distribution where multiple strings require independent disconnection. Feature: 600 VDC per pole and fusible protection. Business Impact: Provides overcurrent protection aligned with NEC 690 and UL 1741 requirements, reducing fault energy and improving safety. Application: High-voltage PV arrays and ungrounded systems in outdoor environments. Feature: NEMA 4X enclosure with 316 stainless steel. Business Impact: Superior corrosion resistance and weatherproofing extend service life in harsh outdoor sites, lowering maintenance costs. Application: Outdoor solar installations and rugged industrial locations. Feature: Ungrounded system design. Business Impact: Reduces arc energy and simplifies fault handling in ungrounded DC configurations, enhancing operator safety. Application: PV inverters and DC power distribution where ungrounded topology is preferred. Feature: Lug capacity for #14-1/0 AWG and solid return. Business Impact: Flexible wiring options streamline field wiring and stocking, cutting install time. Application: Typical solar DC wiring practices. Feature: Compact 10.22 in depth, 16.13 in width, 24.95 in height footprint with 40 lb weight. Business Impact: Manageable installation footprint with straightforward mounting in existing enclosures. Application: Retrofit or new buildouts in limited space. Feature: Compliance suite including NEC 690 per UL 1741 and UL 98B. Business Impact: Clear regulatory alignment reduces inspection risk and accelerates project sign-off. Application: Commercial and industrial PV projects seeking certified protection.
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FAQs
To install the DCU3063FXM, review the product dimension tables for configured ampere ratings and circuit counts, ensure mounting in a compliant NEMA 4X enclosure, and verify wiring with #14-1/0 AWG lugs. Follow the provided product drawings, observe 600 VDC maximums, and connect per the DC disconnect/ungrounded system configuration to maintain UL/NEC compliance.
DCU3063FXM is rated for 600 VDC per pole with fusible protection and a 3-circuit design, purpose-built for PV applications. The 316 stainless steel NEMA 4X enclosure protects against outdoor exposure, while ungrounded operation reduces arc potential during servicing, aligning with typical solar installation safety practices.
Yes, the unit supports three circuits with a 100A rating. Main lug capacity supports #14-1/0 AWG lug sizes, including solid returns, enabling flexible wiring schemes for diverse PV string configurations and simplifying field termination without compromising safety.
The DCU3063FXM aligns with NEC 690 per UL 1741 and UL 98B, ensuring PV-specific overcurrent protection and electrical safety. These certifications, plus the NEMA 4X enclosure rating, matter for code compliance, inspector acceptance, and long-term reliability in outdoor solar installations.
Benefit from a rugged 316 stainless steel, corrosion-resistant enclosure and fusible protection that reduces arc exposure and fault-related downtime. The 3-circuit, 100A design simplifies inventory and maintenance, while UL/NEC-aligned protection supports faster inspections and potentially lower lifecycle costs in solar and industrial DC systems.