, the global leader in circuit protection, has introduced the
PICO® 259-UL913 Series Intrinsically Safe Fuse, the first and only Fuse
to be certified under the latest revision of the UL913 Safety Standard
for Intrinsically Safe Apparatus and Associated Apparatus for Use in
Class I, II, and III, Division 1, Hazardous (Classified) Locations. The PICO
259-UL913 Series
is a range of encapsulated, hermetically sealed
fuses that are ideal for 125V applications in the oil, gas, mining,
chemical, pharmaceutical, and food/beverage processing industries.

The use of devices that are certified to be Intrinsically Safe (IS) is a
requirement of operating electronic equipment in potentially explosive
areas. The new PICO 259-UL913 Series Fuse is suitable for use in
testing, measuring or processing electronic and electrical equipment,
motor controllers, lighting, communication handsets, flow meters,
process control and automation, sensors and other intrinsically safe
apparatus designed to operate in these hazardous locations. The PICO
259-UL913 Series Fuse and its encapsulant prevent heat and sparks from
being exposed to the hazardous gases or dust in the environment. The
Fuse is suitable for use in intrinsically safe apparatus for voltages
not exceeding 125Vrms (190V peak). In addition to the Underwriters
Laboratories, Inc standard, these fuses meet ATEx, IECEx, and Baseefa

“In the past, apparatus manufacturers have traditionally been forced to
send fuses to a third-party supplier or create their own secondary
process to encapsulate the entire fuse to meet the requirements of the
UL 913 standard,” said Juan Morales, Product Director of the Series
259-UL913 Fuse product line. “Now, the PICO 259-UL913 Fuse can help
reduce total product cost. It is ideal for applications in a wide range
of industries because it is designed to operate within environments
where there is danger of gas or dust explosion from faulty circuits.”

The PICO 259-UL913 Series Intrinsically Safe Fuse offers these key
features and benefits:


  • Hermetically sealed, encapsulated design
  • Well suited for 125V applications
  • Current rating options from 62mA to 5A
  • Designed for operation in a range of hazardous environments
  • RoHS compliant


  • The fuse encapsulation prevents heat and sparks from being exposed to
    the hazardous gases or dust in the environment
  • Eliminates the need for an additional potting, epoxy, or encapsulation
    process for the fuse, thereby reducing total product cost
  • Increases overall safety of the apparatus, which enhances protection
    of human life in hazardous operating environments


Littelfuse PICO 259-UL913 Series Intrinsically Safe Fuses are packaged
in bulk in quantities of 10 or 1,000 pieces. Samples are available now
for bulk orders; sample requests can be placed through authorized
Littelfuse distributors worldwide. For a listing of Littelfuse
distributors, please visit

For More Information

Additional information on this intrinsically safe fuse for hazardous
applications is available on the PICO
259-UL913 Product Page
and PICO
259-UL913 datasheet
. If you have technical questions, please
contact: Juan Morales, Product Manager, [email protected]

About Littelfuse

Founded in 1927, Littelfuse, Inc., the worldwide leader in circuit
protection, offers the industry’s broadest and deepest portfolio of
circuit protection products and solutions. Littelfuse devices protect
products in virtually every market that uses electrical energy, from
consumer electronics to automobiles to industrial equipment. In addition
to its Chicago, Illinois, world headquarters, Littelfuse has more than
30 sales, distribution, manufacturing and engineering facilities in the
Americas, Europe and Asia. Technologies offered by Littelfuse include
Fuses; Gas Discharge Tubes (GDTs); Positive Temperature Coefficient
Devices (PTCs); PulseGuard® ESD Suppressors; SIDACtor®
Devices; Silicon Protection Arrays (SPA®); Switching
Thyristors; TVS Diodes and Varistors. The company also offers a
comprehensive line of highly reliable Electromechanical and Electronic
Switch and Control Devices for commercial and specialty vehicles and
Sensors for automobile safety systems, as well as Protection Relays and
underground Power Distribution Centers for the safe control and
distribution of electricity.

For more information, please visit the Littelfuse website:

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