Hubbell LineDefender reduces power outages

  • April 7, 2025
  • Steve Rogerson

Connecticut electrical equipment maker Hubbell has released the LineDefender lateral-protection recloser that helps reduce sustained power outages, while setting a standard for line worker safety and operational efficiency.

The recloser automatically detects and clears temporary faults, restoring power without crew deployment. When permanent faults occur, the device de-energises the circuit and provides clear, visible indication through a semaphore and a flashing beacon, facilitating swift fault identification and restoration. After the fault source is cleared, the recloser lets crews safely restore power from the ground by toggling an easy-to-access yellow handle.

“The LineDefender recloser represents a breakthrough in grid reliability and workplace safety,” said Erik Christian, division president at Hubbell. “By combining sophisticated fault management with ground-breaking safety features, we’re helping utilities minimise outage impacts while protecting their most valuable assets, their workers.”

The lateral-protection recloser offers operating handles and visual indicators that are familiar to line workers within a fused cutout that attaches to a single point mount bracket. Line workers can easily restore power from the ground by operating a yellow handle with a hot stick while the device stays securely latched in its original position.

Secure latching of the device within the power fuse cutout prevents accidental dropout while allowing for visible air-breaks that offer assurance of safe working conditions. A singular hot line trip mode feature provides clearing time under lightly loaded or low fault current conditions for enhanced line worker safety.

The recloser is cost-effective because it is compatible with common overhead line construction envelopes and mountings and requires little maintenance. Visible indicators that are clear in most weather and lighting conditions provide faster fault identification. Balanced weight distribution and guided alignment allow line workers flexibility and safety when creating or closing visible air-breaks. Ease of connectivity with integrated local wifi and Bluetooth pairings and a plug-on cellular scada module enhance communications.

The LineDefender (www.hubbell.com/hubbell/en/products/linedefender-single-phase-recloser/p/13575522) recloser works with the GridHubb software platform (www.hubbell.com/hubbell/en/products/gridhubb/p/14646974), which helps utilities configure, manage and control Hubbell intelligent grid devices through an intuitive user interface. GridHubb software is compatible with Windows, iOS and Android platforms and provides programming and reporting tools. Additionally, the software has embedded help and support features that enable easy training of utility personnel.

Hubbell (www.hubbell.com) is a manufacturer of utility and electrical products that let users operate critical infrastructure safely, reliably and efficiently. With revenues of $5.6bn in 2024, Hubbell’s corporate headquarters is in Shelton, Connecticut. It has over 135 years of experience and more than 18,000 employees worldwide.