Eaton DCU1102URM heavy duty DC disconnect - NEMA 3R 1000 VDC
Part Number: DCU1102URM
Quick Summary
Eaton DCU1102URM heavy-duty DC disconnect isolates solar arrays safely for 1000 Vdc applications. Electrical teams often struggle with ungrounded, non-fusible DC disconnects that complicate maintenance and compliance. This unit carries NEC 690 per UL 1741, UL 98B, and a NEMA 3R enclosure rating for outdoor durability. Designed for solar DC disconnect applications, its 60 A rating and NEMA 3R enclosure simplify field installs and lower downtime. With ungrounded, non-fusible protection, it supports cost-effective maintenance and long-term reliability in 1000 Vdc systems. This translates into faster installations, reduced commissioning risk, and clearer compliance documentation for utilities and EPCs. Engineers can rely on consistent performance across outdoor sites, simplifying procurement and reducing risk during audits.
Product Information
Extended Description
DCU1102URM Eaton: Eaton Heavy duty DC disconnect, 60 A, NEMA 3R, Painted galvanized steel, Non-fusible, Ungrounded, #14-#2 AWG lug capacity, #14-#2 AWG solid return, 1, DC photovoltaic applications, Rating:1000 Vdc
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1102URM
UPC
786685557915
Product Length/Depth
9.89 in
Product Height
16.27 in
Product Width
8.87 in
Product Weight
17 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
60 A
Number of circuits
1
Ground
Ungrounded
Protection
Non-fusible
Application
Solar
Main lug wire size
#14-#2 AWG lug capacity, #14-#2 AWG solid return
System voltage
1000 VDC
Voltage rating
1000 VDC
Series
DC photovoltaic applications
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Non-fusible
Switch type
Heavy duty
Protection
Non-fusible
Feature: 60 A, 1 circuit, non-fusible DC disconnect designed for DC photovoltaic applications. Business impact: Delivers a robust isolation point that minimizes arc faults, reduces equipment wear, and simplifies control wiring for PV inverters and combiners. This translates to safer servicing and lower incident response times. Application: Suited for ungrounded 1000 Vdc PV strings, allowing electricians to isolate a single circuit quickly during routine maintenance, commissioning tests, or after a weather event without replacing protective devices. Feature: NEMA 3R enclosure with painted galvanized steel. Business impact: Provides weather resistance and corrosion protection in outdoor installations, extending service life and reducing replacement costs. Application: Outdoor PV sites, rooftops, and carport arrays where equipment must endure rain, humidity, and temperature swings while maintaining enclosure integrity. Feature: Lug capacity for #14-#2 AWG with solid return; 9.89 in depth; 8.87 in width; 16.27 in height; 17 lb weight. Business impact: Ensures reliable, low-resistance terminations that minimize heating and field rework. Application: Solar feeders and string sections where consistent conductor termination is required within a compact footprint. Feature: Certifications NEC 690 per UL 1741 and UL 98B; one-year Eaton warranty. Business impact: Validates safety and compliance across jurisdictions, simplifying procurement and audit readiness. Application: Utility-scale and contractor environments where standards alignment speeds installation and reduces risk of non-compliance. Feature: Installation and compatibility advantages—ungrounded, single-circuit design aligns with common PV disconnect layouts; straightforward mounting and connections for #14-#2 AWG. Business impact: Reduces installation time, simplifies contractor training, and minimizes changes to racking layouts. Application: Retrofit projects and new solar installations seeking a durable, field-serviceable DC isolation point.
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FAQs
The DCU1102URM fits a single-circuit, non-fusible DC disconnect configuration for solar PV systems. It supports 60 A at 1000 Vdc, uses #14-#2 AWG lugs, and mounts in a NEMA 3R painted galvanized steel enclosure for outdoor use. With 9.89 in depth, it aligns with common DC disconnect footprints, facilitating straightforward retrofits and serviceability.
This unit is certified to NEC 690 per UL 1741, UL 98B, and features a NEMA 3R enclosure for outdoor durability. These certifications ensure safe operation in solar PV environments, compliance with utility install guidelines, and reliable performance in varying weather. The UL listings also support ongoing maintenance audits and help streamline procurement through recognized standards.
Yes. The DCU1102URM uses a NEMA 3R enclosure with painted galvanized steel, providing weather resistance and corrosion protection for outdoor solar sites. It is ungrounded and non-fusible, designed for vertical mounting in PV-ready layouts. The unit's 60 A rating and 1000 Vdc capability keep critical arrays isolated safely while complying with NEC 690 requirements.
Plan for conductor sizing and termination with #14-#2 AWG lugs as specified, ensuring a solid return path and proper torque at all terminals. The ungrounded design reduces stray-path risks but requires careful coordination with system grounding practices per NEC. Allow for a compact 9.89 in depth, typical mounting footprint, and consider enclosure clearance for thermal expansion in outdoor settings.
Adopting the DCU1102URM can reduce maintenance downtime by providing a durable, non-fusible isolation point with proven NEC/UL compliance. The 60 A, 1000 Vdc rating supports reliable performance with minimal service interventions, while the NEMA 3R enclosure withstands weather exposure. The one-year warranty and Eaton support help lower lifecycle costs and protect system uptime.