AC Isolators

Reliable AC isolators designed for safe, efficient, and compliant solar PV, commercial, and industrial electrical installations.

AC Isolation for Solar PV & Electrical Systems

AC isolators are a critical safety component in every solar PV and electrical installation. They allow the AC supply to be safely disconnected during maintenance, repairs, testing, or emergency shutdowns. At DSH Cables & Controls, we manufacture and supply high-quality AC isolator solutions built for reliability, compliance, and long-term performance.

Whether you need a standard enclosed AC isolator or a fully customised solution for a complex installation, our team can design and build panels tailored to your exact requirements.

We supply AC isolators for solar PV systems, commercial electrical installations, industrial applications, generator systems, battery storage setups, and more. Our range covers everything from compact 16A units through to heavy-duty 4000A solutions.

For projects that require complete system integration, we can also incorporate metering, contactors, interlocks, monitoring equipment, and bespoke enclosure configurations.

What Is an AC Isolator?

An AC isolator is a switching device used to safely disconnect electrical equipment from the mains power supply. In solar PV systems, the AC isolator separates the inverter from the building’s AC supply, allowing engineers to work safely during maintenance or emergencies.

Without proper isolation, electrical systems can become unsafe to service and may fail to meet current regulations and installation standards.

AC isolators are commonly used in:

  • Solar PV systems
  • Commercial electrical installations
  • Industrial control systems
  • Battery storage systems
  • Generator changeover applications
  • Distribution boards and switchgear assemblies

Our AC Isolator Solutions

Enclosed AC Isolators 

We supply enclosed AC isolators suitable for indoor and outdoor installations, with a range of IP-rated enclosure options. 

Solar PV AC Isolators 

Our AC isolators are designed for safe inverter isolation in solar PV systems and renewable energy projects. 

Heavy-Duty Industrial Isolators 

We manufacture high-current isolators up to 4000A for demanding commercial and industrial applications. 

Bespoke Isolation Panels 

We can customise panels with: 

  • Metering 
  • Contactors 
  • Intertrip functions 
  • Emergency stop integration 
  • Oversized enclosures 
  • Custom cable access 

For complete systems, we also provide PV distribution boards and bespoke panel assembly services. 

Why AC Isolation Is Important

A reliable AC isolator helps: 

  • Improve electrical safety 
  • Protect engineers during maintenance 
  • Support system compliance 
  • Reduce downtime 
  • Allow safe emergency shutdowns 


Using correctly rated isolation equipment is essential for long-term system reliability.
 

Built Around Your Project

Every installation is different. We work with installers, contractors, and engineers to supply AC isolators tailored to your application, cable sizes, and site conditions. 

We also support projects requiring G99 relay panelsexport control systems, and DC combiner boxes. 

Our Process

  1. Consultation

We discuss your system requirements and specifications. 

  1. Design

Our team designs the correct isolator or bespoke panel solution. 

  1. Manufacturing

All systems are assembled using quality components. 

  1. Testing

Each panel is checked before dispatch to ensure reliability and safety.

Haydon

haydon.t@dshcables.co.uk
Tel:07931 850 123

Simon

simon.h@dshcables.co.uk
Tel:07854 847 326

Muel

sam.j@dshcables.co.uk

Get in touch...

No matter the size or scope of your project, DSH Cables can deliver the perfect solution. Reach out to us today and discover how our services can save you both time and money. Contact our team now to request a quote and discuss your project requirements.