Our commutating current limiters provide fault current protection for systems rated 15.5 through 38kV and for applications that include power transformer protection, system upgrades, reactor bypass, cogeneration and closing bus ties. Limiters are available for a wide range of overcurrent interrupting and current limitation requirements.
Current Limiting System Protection
Unparalleled Fault Current System Protection
A Safer Solution
Current limiters combine the benefits of circuit breakers and overcurrent protective devices to deliver reliable multi-hazard electrical protection that help keep your workers and equipment safe from arc flashes and system damage.
Sealed for a Range of Environments
Our current limiters are compact and feature completely sealed construction for successful installation indoors or outdoors, mounted on a pole or set within an enclosure.
Real-Time Data
Built-in current transformers provide real-time current values to the internal electronics to help users protect against short-circuit interruptions without the need to add new equipment.
Simple System Upgrade
Operators can upgrade their systems by installing our current limiters without the need to replace underrated equipment such as circuit breakers, reclosers, switches or busbars.
Current Limiting System Protection Types
Explore our current limiting system protection solutions by type to find those best suited to your needs.
CLiP® has the unique ability to provide high continuous current ratings with current limitation and ultra high-speed operation. Its single-phase and three-phase protection with remote enable/disable works in systems rated 2.8–38 kV with continuous current up to 5000A. CLiP® can be pole-mounted and installed indoors and outdoors without an enclosure.
CLiP®-LV is a unique over-current protection device that interrupts potentially damaging fault current. It works with voltages up to 750V and continuous currents up to 4000A. CLiP®-LV’s UL rating offers added certainty of its testing and safe operation in a variety of applications.
Encapsulated current limiting fuses deliver an extremely durable system through a rugged design that uses epoxy technology. Their economical, one-piece epoxy encapsulated fuses are easy to install and remove.
High current limiters feature interrupt ratings to 120 kA. Their backup fuses are designed for application in series with lower rated interrupters.
Power assisted fuses are designed for systems rated 2.8–38 kV and continuous currents up to 600A. They can operate as part of indoor and outdoor applications and are easy to install and maintain.
