Eaton DCG3104FWM DC disconnect - NEMA 4X, 1000 VDC
Part Number: DCG3104FWM
Quick Summary
Eaton DCG3104FWM heavy-duty DC disconnect provides safe isolation for solar PV installations. Engineers often struggle with reliable protection, corrosion resistance, and wiring flexibility in outdoor, space-constrained enclosures. It is certified for NEC 690 per UL 1741 and UL 98B, and features a NEMA 4X enclosure in 304 stainless steel for durable outdoor performance. With a 200 A rating and 1000 VDC capability, it supports high-current PV strings while maintaining safe operation. The fusible design and versatile lug options streamline installation, reduce field labor, and help meet evolving solar codes without compromising reliability.
Product Information
Extended Description
DCG3104FWM Eaton: Eaton heavy duty DC disconnect,200A,NEMA 4X,Grade 304 stainless steel,Fusible,Grounded,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-#14,3,Isolated return,DC photovoltaic systems,1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCG3104FWM
UPC
786685625522
Product Length/Depth
35.38 in
Product Height
11.63 in
Product Width
24.46 in
Product Weight
90 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/grounded system
Amperage Rating
200 A
Number of circuits
3
Ground
Grounded
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
304 stainless steel
Fuse configuration
Fusible
Isolation
Isolated return
Switch type
DC photovoltaic systems Heavy duty
Protection
Fusible
The 200 A amperage rating with three circuits enables you to isolate multiple PV strings within a single disconnect, reducing enclosure count and cabinet space. This consolidation translates to faster commissioning and lower on-site labor costs in the field. The NEMA 4X enclosure crafted from 304 stainless steel delivers excellent corrosion resistance and weather sealing, ensuring long service life in outdoor or harsh environments and minimizing maintenance cycles. Grounded operation with an isolated return improves fault current management, enhancing personnel safety and simplifying grounding schemes for both grid-tied and standalone PV configurations. Fusible protection provides predictable fault clearing and selective coordination, which reduces equipment stress and downstream failures. Compatible lug configurations LC SR and EG support a wide range of conductor sizes, enabling flexible field wiring without custom components. Compliance with NEC 690 per UL 1741 UL 98B simplifies code audits, while the robust enclosure and warranty support confident long-term operation and lower total cost of ownership in solar installations.
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FAQs
DCG3104FWM supports LC, SR, and EG lug configurations. LC accepts In 300 kcmil-#6 out 300 kcmil-#6, SR accepts the same range, and EG accepts smaller conductors (in #4-#14 AWG out 1/0-#14). Plan wiring so that feeder sizes match the lug limits and maintain proper torque per the included installation guidelines to ensure a reliable, code-compliant connection.
The unit is rated for 200 A and 1000 VDC, making it suitable for solar DC applications up to 1000 V. This rating supports multiple PV strings and reduces the need for additional intermediate disconnects in common utility-scale or commercial rooftop installations.
Yes. It features a NEMA 4X enclosure and 304 stainless steel construction, providing outdoor weather resistance and corrosion protection. This makes it well-suited for exposed roof sites, carport installations, and other outdoor solar environments where reliability and durability are critical.
It meets NEC 690 requirements with UL 1741 and UL 98B certifications, ensuring electrical safety and compliance for PV systems. The NEMA 4X enclosure further supports outdoor code compliance by resisting moisture, dust, and corrosion, reducing inspection hurdles on site.
Warranty terms follow Eaton's policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This provides protection against manufacturing defects and supports a lower total cost of ownership for solar projects during the critical initial years of operation.