Nuclear Cable Manufacturers and Suppliers


Linking global infrastructure to critical operations

Prysmian Group delivers a complete portfolio of superior nuclear cables for systems and components involved in the production of nuclear energy, including medium-voltage, instrumentation, control, communication, fiber optic and cables for special radiation-monitoring equipment.


Quality and performance guaranteed:

  • A wide range of state-of-the-art cables for existing and new power stations
  • Designed and third-party approved solutions in accordance to main environmental standards and design requirements
  • Performance and reliability over time (up to 60 years)
  • Fully environmentally qualified in accordance with 10 CFR 50.49, IEEE 323 and IEEE 383
  • DecaBDE-free and complies with US EPA prohibition per 40 CFR 751.405(a)(2)(ii)

ULTROL® 60+ cable solutions for Generation III+ and Legacy nuclear power facilities

ULTROL® 60+ cables deliver reliable low- and medium-voltage power for efficient power production, distribution, control and communications in nuclear facilities. For optimized operation in all known reactor environments from inside and outside containment, to the turbine island and balance of plant, ULTROL 60+ cables meet flame testing and long-term thermal endurance to exceed 60-year service life for GEN III+ and legacy reactor profiles.


Founded on a legacy of over five decades of dedicated manufacturing excellence, our nuclear quality assurance program is compliant with 10CFR50 Appendix B, ANSI N45.2, ASME NQA-1 (1994 and 2008/9), ISO 9001. Extensive third-party qualification testing ensures that every ULTROL 60+ cable conforms to industry standards, as well as your specific needs. Our committed R&D, manufacturing, engineering, quality assurance and sales teams are your valuable resource to satisfy and support your complex nuclear business.

ULTROL 60+ is a step above the rest:

  • Satisfies the most stringent nuclear safety standards for inside and outside containment
  • Conforms to all U.S. Nuclear Regulatory Commission regulations
  • Demonstrates thermal aging and radiation resistance up to 350 MRad exposure levels, proving service life of 60+ years
  • Meets/exceeds loss-of-coolant accident (LOCA) and high-energy line break (HELB) environmental qualification testing per IEEE 323 and IEEE 383
  • Provides excellent wet-electrical (submersion) performance upon aging at 90° C over two years
  • Delivers reliability in extreme conditions (cold/hot temperatures, humidity, abrasion, fire performance in emergency, etc.)
  • Offers tougher abrasion-resistant, flame-retardant Cross-linked Polyolefin (XLPO) jacket compound

As one of the first radiation- and moisture-resistant cables with flame-retardant insulation to guarantee a 40-year service life, the ULTROL® name has been synonymous with reliability and safety in nuclear cable for nearly 40 years. Backed by a continued commitment to provide the nuclear industry with cable solutions that deliver maximum service life, Prysmian has extended ULTROL’s demonstrated quality and performance with its latest mastery of technology—ULTROL 60+. Based on a combination of ULTROL’s original renowned technology and Prysmian’s industry-leading R&D, processing capabilities and decades of nuclear experience, ULTROL 60+ features a unique balance of highly engineered insulation and jacket compounds coupled with high-grade copper conductors that ensure reliable electrical performance and superior durability under all operating conditions. Proven to meet the most rigorous Generation III reactor requirements for a 60-year operating life and beyond, ULTROL 60+ is ready to support the modernization and construction of pressurized and boiling water nuclear power plants worldwide.

Nuclear power is a green energy mix key component and can make a significant contribution to achieving sustainable energy goals and enhancing energy security. Critical components, like cables, must ensure high levels of reliability throughout their lifecycle for the safe and efficient operation of nuclear power plants.


Prysmian Group offers the highest standards of reliability and safety with more than 50 years of expertise in designing and manufacturing nuclear cables.

Product Range

ULTROL 60+ medium voltage power cables offer superior performance in utility power generating plants and other industrial three-phase applications. With a Class 1E rating and designed specifically for applications in nuclear generating stations, these cables are available in versions for 5kV, 8kV and 15kV.



Prysmian offers a variety of Class 1E rated low-voltage power cables:

Low-Voltage SIS Switchboard Wire – Type SIS & Type SIS/XHHW-2
ULTROL 60+ SIS 600 V, Class 1E-rated switchboard wire is designed for use in Class 1E low-voltage applications in operation and interconnection of protective devices where optimum performance is required and where flame retardancy is critical

Low-Voltage Power Cable – Type RHH/RHW-2
ULTROL 60+ 600 V, Class 1E-rated low-voltage power cables are designed specifically for use in Class 1E low-voltage power and lighting functions where optimum performance is required and where flame retardancy is critical. They are available in heavy-wall and dual-wall versions to match the amount of jacket protection required.

Low-Voltage Thermocouple Extension Cable
ULTROL 60+ 600 V thermocouple extension cable is a 600 V with Class 1E-rated construction is specifically designed for use on critical circuits where total isolation is required between pairs and from external interference.

Low-Voltage Power Cable – Type TC-ER
ULTROL 60+ 600 V power cable with a Class 1E-rated construction specifically designed for use in Class 1E power distribution and control circuits for power lighting, control and signal circuits.



ULTROL 60+ 600 V multiconductor control cable with a Class 1E-rated construction is specifically designed for use in Class 1E power distribution and control circuits for power lighting, control and signal circuits.



ULTROL 60+ instrumentation cable is a 600 V multiconductor, thermoset, Class 1-rated construction specifically designed for use in Class 1E monitoring data recording and transmitting information on circuits. They come in constructions with varying levels of shielding depending upon the necessary level of protection against external electrostatic interference.



Prysmian offers rugged, yet light weight cable constructions built to conform to industry standards and Nuclear Regulatory Commission (NRC) guidelines. The cables are made with materials to meet IEEE 383, IEEE 1202 as well as other flame ratings commonly used in the nuclear industry and are available in an array of fiber types from single-mode and multi-mode varieties as well as specialty fibers such as BendBright® bend insensitive and radiation resistant fiber.



Ultrol 60+ Nuclear Cable Solutions Catalog

ULTROL 60+ Nuclear DecaDBE-Free Cables Brochure

Nuclear Products Reference List

Contact us

Select contacts by department

Nuclear - US

Inside Sales