Solar PV & ESS DC Disconnect Switch Supply – South Carolina Solar Contractors

Power your solar installations with premium DC disconnect switches engineered for South Carolina's demanding climate. ValuAdd delivers UL 98B certified INOSYS and SIRCO disconnect solutions with up to 1500 VDC capacity, visible contact verification, and arc fault containment—essential for safe, compliant solar PV and energy storage systems across the Palmetto State.

Professional solar DC disconnect switch installation on commercial PV system

Our DC Disconnect Switch Solutions

Complete range of certified disconnect switches engineered for safe, reliable solar PV and energy storage system protection.

INOSYS LBS UL 98B Disconnect Switches

Premium disconnect switches with 750 VDC breaking capacity per pole, visible contacts with arc fault containment, and direct position indication. Rated up to 1500 VDC with current ratings from 10A to 1200A for comprehensive solar installations.

SIRCO MOT DC ESS Switches

High-performance 1500 VDC rated disconnect switches with 2000A capacity and motorized remote operation. Features patented arc extinguishing technology and environmental testing for salt spray, humidity, and extreme temperatures.

SIRCO UL 98 C Heavy Duty Switches

Industrial-grade power circuit protection with double-breaking per pole design and 800 VAC safety isolation. UL 98C certified with current ranges from 400A to 1000A for demanding commercial solar applications.

RMS Modular Fuse Holders

Compact 100 kA breaking capacity fuse holders with IP2X safety protection and built-in fuse melting indicators. Available in 45-mm modular format for flexible solar combiner box installations.

Custom DC Switching Solutions

Engineered configurations for unique solar PV and ESS requirements. Our technical team designs tailored disconnect solutions meeting specific voltage, current, and environmental specifications for South Carolina installations.

Mounting & Accessory Components

Complete installation accessories including busbar supports, cable ties, mounting bases, and connection hardware. All components certified halogen-free with UV resistance for outdoor solar applications.

UL 98B Certified Excellence

Certified Safety & Performance for Solar Installations

South Carolina's solar market demands disconnect switches that withstand coastal humidity, intense summer heat, and storm conditions. Our INOSYS and SIRCO product lines deliver UL 98B and IEC 60947-3 certified performance with visible contact verification, patented arc fault containment, and breaking capacities engineered for modern high-voltage solar arrays. Every switch features tool-free access, non-polarized wiring for faster installation, and operation tested from -40°F to 122°F with no derating required—ensuring your solar investments operate safely year-round.

UL certified DC disconnect switch with visible contacts for solar PV system
Proven Performance

Trusted By Industry Leaders

Powering critical solar installations for manufacturers and industrial facilities nationwide.

"The quality of American Electrical components through ValuAdd has been outstanding. Their technical datasheets and multilingual support make specification easy."

Sarah Patterson

"ValuAdd provided excellent guidance on selecting the right ROG sensor diameter for our busbar configuration. The integration with our DIRIS meters was seamless."

Sarah Rodriguez

"ValuAdd's deep knowledge of electrical components and their manufacturer relationships have been invaluable for our panel building projects. They consistently deliver the right solutions."

Mike Johnson

"The quality of American Electrical components through ValuAdd has been outstanding. Their technical datasheets and multilingual support make specification easy."

Sarah Patterson

"ValuAdd provided excellent guidance on selecting the right ROG sensor diameter for our busbar configuration. The integration with our DIRIS meters was seamless."

Sarah Rodriguez

"ValuAdd's deep knowledge of electrical components and their manufacturer relationships have been invaluable for our panel building projects. They consistently deliver the right solutions."

Mike Johnson

"The quality of American Electrical components through ValuAdd has been outstanding. Their technical datasheets and multilingual support make specification easy."

Sarah Patterson

"ValuAdd provided excellent guidance on selecting the right ROG sensor diameter for our busbar configuration. The integration with our DIRIS meters was seamless."

Sarah Rodriguez

"ValuAdd's deep knowledge of electrical components and their manufacturer relationships have been invaluable for our panel building projects. They consistently deliver the right solutions."

Mike Johnson
The ValuAdd Difference

Why Choose ValuAdd for Your Disconnect Switch Needs?

Advanced industrial solutions backed by technical expertise and comprehensive support.

Certified Quality

UL 98B, CE, and IEC certified products meeting South Carolina electrical code requirements and NEC Article 690 solar disconnect specifications.

Technical Expertise

Factory-trained specialists provide component selection guidance, custom engineering solutions, and territory-based support for South Carolina contractors.

Harsh Environment Rated

Products tested for vibration, salt spray, extreme temperatures, and humidity—engineered to excel in South Carolina's coastal and inland conditions.

Fast Delivery

Streamlined logistics and inventory management ensure quick turnaround on standard and custom disconnect switch configurations for time-sensitive solar projects.

Meet Our Technical Specialists

Expert engineers dedicated to your project success.

Michael Johnson, Plant Engineer specializing in industrial solar systems

Michael Johnson

Plant Engineer, Industrial Manufacturing

Michael Johnson brings extensive experience in machinery protection and industrial electrical systems to every solar project consultation. His background in reducing unexpected downtime in manufacturing facilities translates directly to designing reliable, fault-tolerant solar disconnect solutions for commercial and industrial installations. Michael specializes in coordinating complex multi-array systems, ensuring proper disconnect placement, and implementing redundant safety mechanisms that protect both equipment and personnel. His hands-on approach to troubleshooting and system optimization has helped dozens of South Carolina contractors navigate the technical challenges of large-scale solar PV and energy storage deployments. Michael stays current with evolving NEC requirements and UL standards, providing clients with forward-compatible solutions that meet today's codes while accommodating future expansions.

Sarah Rodriguez, Electrical Engineer and System Integration Specialist

Sarah Rodriguez

Electrical Engineer, System Integrator

Sarah Rodriguez is a licensed electrical engineer with specialized expertise in selecting and implementing disconnect switches for critical solar and energy storage applications. Her technical background in system integration enables her to analyze complete electrical architectures, identifying optimal disconnect placement, voltage ratings, and breaking capacities for projects ranging from residential solar arrays to utility-scale battery systems. Sarah works closely with South Carolina solar contractors to ensure disconnect solutions integrate seamlessly with inverters, charge controllers, and monitoring systems while maintaining strict compliance with safety standards. Her consultative approach combines deep product knowledge with practical installation insight, helping clients avoid costly mistakes and achieve first-time-right installations. Sarah regularly conducts technical training sessions on proper disconnect switch sizing, arc flash protection, and maintenance best practices for solar professionals throughout the Southeast.

Frequently Asked Questions

Do you need a solar disconnect switch?

Yes, the National Electrical Code (NEC) Article 690 requires a readily accessible disconnect means for all solar PV systems. This safety device allows first responders and maintenance personnel to completely de-energize the solar array, protecting both people and equipment during emergencies or service work.

What is the code for solar disconnect switch?

What voltage rating do I need for my solar disconnect switch?

Can I use AC-rated disconnect switches for solar DC applications?

How do I determine the correct current rating for my solar disconnect?

What is arc fault containment and why does it matter?

Do your disconnect switches work with energy storage systems (ESS)?

What lead time should I expect for disconnect switch orders?

Need Help Selecting the Right Disconnect Switch?

Our engineers provide free technical consultations to ensure code-compliant, safe solar installations.

Get Expert Disconnect Switch Guidance for Your Solar Project

Complete the form below and our technical specialists will respond within 24 hours with product recommendations, pricing, and delivery information.

Contact Us Today

For immediate assistance, feel free to give us a direct call at You can also send us a quick email at