Eaton DCU1065FRM DC disconnect - UL Listed, Heavy Duty
Part Number: DCU1065FRM
Quick Summary
The Eaton DCU1065FRM DC disconnect is a heavy-duty DC disconnect designed for safe, rapid isolation of ungrounded solar PV circuits. Operators often struggle with reliable fault isolation in harsh outdoor environments; this unit delivers rugged reliability, straightforward maintenance, and clear visibility for maintenance teams. UL Listed safety certification and a NEMA 3R enclosure provide rugged protection and compliance in outdoor or challenging indoor installations. Designed for 600 VDC per pole and 400 A capacity, it supports scalable PV deployments while reducing wiring complexity, downtime, and risk in critical electrical protection and control tasks in industrial facilities.
Product Information
Extended Description
DCU1065FRM Eaton: Eaton heavy duty DC disconnect,DC disconnect/ungrounded system,400A,NEMA 3R,Painted galvanized steel,Fusible,Ungrounded,600 Vdc,1,DC Photovoltaic Applications
Product Name
Eaton heavy duty DC disconnect
Catalog Number
DCU1065FRM
UPC
786685865829
Product Length/Depth
12.42 in
Product Height
57.47 in
Product Width
24.12 in
Product Weight
111.5 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 Listed
Type
DC disconnect/ungrounded system
Amperage Rating
400 A
Number of circuits
1
Ground
Ungrounded
Maximum voltage
600 VDC
NEMA rating
NEMA 3R
Protection
Fusible
Application
Solar
System voltage
600 VDC per pole
Voltage rating
600 VDC
Series
DC Photovoltaic Applications
Enclosure
NEMA 3R
Enclosure material
Painted galvanized steel
Fuse configuration
Fusible
Switch type
Heavy duty
Protection
Fusible
Feature → Business Impact → Application: 400 A amperage rating ensures capability to handle full load during switching events, reducing nuisance trips and associated downtime in large solar installations. This translates to improved system availability and lower maintenance costs for utility-scale or commercial PV projects. Application: Solar PV arrays with high current profiles can rely on a single disconnect per pole to simplify protection schemes and improve installation efficiency. Feature → Business Impact → Application: Fusible protection provides selectivity and clear fault isolation, enabling quicker fault location and safer maintenance in environments with elevated dust or moisture. Application: Rooftop and ground-mounted PV systems requiring robust, code-compliant protection. Feature → Business Impact → Application: Ungrounded, 600 VDC per pole design supports modern DC microgrids and ungrounded DC circuits, reducing touch-safe requirements during maintenance and simplifying compliance checks. Application: Industrial outdoor DC power distribution with demanding environmental conditions. Feature → Business Impact → Application: NEMA 3R enclosure and painted galvanized steel construction enhance weather resistance, enabling installation in outdoor or semi-exposed spaces with minimal corrosion risk. Application: Outdoor solar inverters, battery storage, and DC distribution cabinets. Feature → Business Impact → Application: UL Listed certification and strong enclosure protection provide confidence during audits and procurement, supporting faster project approvals and long-term maintenance planning. Application: Projects with strict safety and regulatory requirements and multi-site deployments.
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FAQs
Yes. The DCU1065FRM is rated for 600 VDC per pole and supports a single circuit. It provides a fusible, ungrounded disconnect suitable for solar PV deployments, with a 400 A rating to handle typical HV DC strings safely in industrial environments.
The unit comes in a NEMA 3R enclosure made from painted galvanized steel, designed for outdoor and semi-exposed areas. It supports rugged operation in dust, rain, and varying temperatures, with a weight of 111.5 lb and overall dimensions of 12.42 in depth, 24.12 in width, and 57.47 in height to fit standard electrical spaces.
Key specs include 400 A amperage rating, 1 circuit, ungrounded configuration, 600 VDC maximum voltage, and 600 VDC system voltage per pole. The device utilizes fusible protection and is intended for DC photovoltaic applications, aligning with typical PV combiner and DC distribution needs.
The DCU1065FRM is UL Listed, which validates safety compliance for electrical installations. Additionally, it uses a NEMA 3R enclosure that provides reliable protection against weather-related ingress, supporting outdoor applications and code compliance in many regions.
Eaton provides a warranty per policy 25-000, offering one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. This warranty supports replacement or repair needs, helping protect long-term ROI on solar DC protection equipment.