Single Phase HV Isolating Links for Distribution Networks

Engineered for Reliable HV Isolation in Critical Network Applications

Insulect’s Isolating Links are trusted across substations and distribution networks throughout Australia and New Zealand—providing safe, visible isolation points between high-voltage assets.

Designed and manufactured in Australia, each unit is tested to meet AS 62271.102 and IEC 62271.102 standards. Available in ratings from 12 kV to 72.5 kV and up to 1600 A, our Isolating Links are built to suit individual network specifications, with options for load break operation, spark-free performance, and custom mounting orientations.

Whether used in new installations or retrofit applications, Insulect isolating links deliver field-proven reliability, mechanical integrity, and safe switching operation under demanding conditions.

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Engineered for Reliable HV Isolation in Demanding Environments.

Insulect’s HV isolating links are built to meet the rigorous demands of Australia’s distribution and substation networks. With voltage ratings from 12 kV to 72.5 kV and current ratings up to 1600 A, these units are trusted isolation points between high-voltage apparatus. Offering robust insulation, secure conductivity, and configurable mounting styles, they provide safe, reliable disconnection and fault isolation in critical infrastructure.

Precision Switching and Safe Operation in the Field.

Insulect’s isolating links are engineered with optional load break capability—available up to 36 kV, 630 A—providing safe and controlled switching under load. Each unit features two-finger operating blades with pressure springs to maintain optimal contact and avoid hotspots. Flicker blades provide arc suppression for secure disconnection across a wide range of operational scenarios.

Configurable Designs to Suit Any Site Conditions.

Available in single or double insulator formats, Insulect isolating links offer installation flexibility with 30° angled, vertical, or underslung mounting options. Field earthing facilities support safe maintenance practices, while local design and compliance to AS/IEC 62271.102 ensures network compatibility across utility and industrial sites.

Supporting Safe Isolation. Maximising Network Resilience.

High-voltage networks demand dependable disconnection points for maintenance, safety, and fault isolation. Insulect isolating links mitigate risk with spark-free operation, load break options, and robust construction tailored for harsh conditions. Backed by local design, testing, and support, they help ensure operational continuity, reduce downtime, and maintain compliance in evolving energy networks.

TECHNICAL

Features & Functionality

Functionality & Options

Insulect isolating links are designed and manufactured in Australia, purpose-built for substation and distribution environments requiring safe HV apparatus isolation.
Available in single or double insulator designs, with two-finger blade operation and pressure springs for consistent contact and hot-spot prevention.
Integrated flicker blades or load-break capability up to 36 kV 630 A support live-line disconnection where required.
Earthing facilities and custom mounting configurations (including 30° offset, vertical or underslung) allow installation flexibility in both retrofit and new builds.

Key Technical Specifications

Voltage Rating Range: 12 kV to 72.5 kV
Current Ratings: 630 A to 1250 A
Load Break Capability: Up to 36 kV at 630 A (optional).
Mounting Options: 30°, vertical, or underslung configurations.
Compliance Standards: IEC 62271.102 / AS 62271.102.
Design Variants: Single and double insulator types with optional field earthing.

EXPERIENCE

Our Projects Featuring Insulect Swithgear

Explore our project highlights to see where Insulect Switchgear is making an impact.
For tailored advice on whether this solution suits your network, please connect with our team here.

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Wunghnu Solar Farm

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Fortescue Aldoga, New 275kV Substation Switchgear

ADVANTAGES

Why Choose Insulect for Isolating Links

Insulect’s isolating links are trusted across Australian and New Zealand networks for delivering safe, reliable high-voltage isolation in both substation and distribution settings. Designed and manufactured locally, our isolators offer exceptional mechanical and electrical performance across a wide range of voltages and configurations. Whether you're operating in compact sites or high-risk environments, Insulect links provide precision-engineered solutions—featuring spark-free switching, load break capability, and custom mounting flexibility. Compliant with AS and IEC standards and backed by field-proven durability, Insulect isolating links ensure safety, service continuity, and confidence in every installation.

Built for Australian Networks

Locally designed and manufactured, Insulect’s isolating links are engineered to perform in demanding environments—including bushfire-prone regions, high-humidity zones, and extreme temperatures. Compliant with AS and IEC standards, they deliver safe, spark-free isolation across distribution and substation applications.

Configurable to Fit Your Needs

Available in 12/24 kV, 36 kV, and 72.5 kV ratings, with single or double insulator designs, Insulect isolating links can be customised for vertical, 30-degree, or underslung mounting. Options include load-break capability, flicker blades, and field earthing for safe and reliable operation.

Local Support, End-to-End

From design consultation through to on-site installation and testing, Insulect provides full lifecycle support. Whether you're managing a greenfield build or a retrofit upgrade, our responsive team ensures fast turnaround, expert guidance, and trusted performance every step of the way.

IMPLEMENTATION

Services & Support

Insulect offers comprehensive services and support for the products we manufacture and specialise in, enhancing value for local utilities, major energy users, equipment manufacturers, and service operators.

LOCAL TECHNICAL TEAM

Our local technical team provides exceptional support and expertise, ensuring quick response times and personalised service to tackle any challenges that may arise during project execution.

ENGINEERING DESIGN

Our team utilises advanced technology and industry knowledge to develop innovative and efficient high voltage switchgear solutions, customised to fit the unique requirements of each project.

PROCUREMENT & LOGISTICS

We facilitate smooth procurement and logistics processes by sourcing from trusted, proven partners and coordinating timely deliveries, ensuring projects remain on schedule and within budget.

TESTING & COMMISSIONING

Professional testing and commissioning support ensures that every high-voltage switchgear system functions safely and reliably, adhering to all regulatory standards and client expectations.

TURNKEY PROJECT DELIVERY

We are able to oversee every phase from concept to completion, providing comprehensive solutions that simplify complex projects and ensure successful outcomes.

FACTORY VISITS

We facilitate client visits to our local manufacturing sites here in Australia, as well as overseas, for initial inspection as well as factory acceptance testing.