Littelfuse offers a variety of industrial power fuses to serve numerous applications. We provide a innovative selection of power fuses to meet the needs of our customers. Explore our various products below to find your solution.
Littelfuse offers three different series of Class CC dual-element fuses that are specifically designed to protect different types of components. The CCMR time-delay fuses offer superior protection of motor circuits up to 40 hp. The KLDR time-delay fuses are designed to withstand the high magnetizing in-rush of transformers. The KLKR fast-acting fuses are used for protection of equipment containing solid-state devices or other components requiring fast response on overloads. The...
Littelfuse offers a broad range of industrial power fuses for protection of electrical circuits in a variety of applications. The Littelfuse Class G fuses are available in several different sizes depending on the ampere rating and are not interchangeable with any other UL fuse class. The fuse’s varying length prevents insertion of higher ampere rated fuses in fuse holders designed for lower ampere ratings. Littelfuse offers the Class G SLC series for use in branch circuit protection. These are...
Littelfuse offers three types of current-limiting Class J fuses to meet the need for circuit protection in industrial and electrical power generation and transmission applications. Fast-acting JLS series fuses provide space-saving overload and short-circuit protection in industrial and power conversion applications. JTD time-delay fuses employ POWR-PRO® technology to ensure very high interrupting ratings and are specifically designed for use where space is limited. JTD_ID fuses share...
Littelfuse makes a variety of industrial power fuses to protect electrical equipment in a broad range of applications. Class K5 "one-time," fast-acting fuses provide low-cost protection for general purpose feeder and branch circuits when available short-circuit currents are less than 50 kA. This product group includes the NLN and NLS series, which, respectively, have maximum voltage ratings of either 250 V ac or 600 V ac.
Current-limiting Class L fuses are available in fast-acting and time-delay versions. Fuses in the LDC and KLPC series feature POWR-PRO® performance, and LDC series fuses are the first in this class of UL Class industrial fuses rated at 600 V ac and 600 V dc. Littelfuse also offers KLLU series Class L fuses with POWR-GARD® performance. Common applications include protecting circuits that carry loads as high as 6 kA for electrified crane rails, light rail systems, and large electric motors.
Littelfuse offers five different series of POWR-PRO® Class RK1 fuses for maximum circuit protection. They are extremely current-limiting and provide advanced protection by allowing less damaging energy to pass through them while opening. These fuses are available in fast-acting or time-delay versions. The time-delay version features dual-element construction to withstand repeated surges. The fast-acting series feature an economical design and the safety of an RK1 fuse..
Littelfuse offers five series of current-limiting Class RK5 fuses for superior short-circuit protection. Each boasts dual-element design and time-delayed performance that eliminates nuisance opening. Fuses in FLSR_ID also have built-in blown-fuse indicators. Class RK5 fuses are often used to protect circuits for service entrance switches, transformers, distribution panelboards, and fluorescent lights.
At less than one-third the size of similarly performing Class R fuses, current-limiting POWR-GARD® Class T fuses offer space-saving overcurrent and short-circuit protection solutions in applications requiring fuses with current ratings higher than 30 A. Be aware, however, that Class T fuses may provide protection only against short circuits when used with circuits carrying inductive loads. For applications where fuse size is not a principal concern, Littelfuse recommends JTD_ID series Class J...
Primary current-limiting and overcurrent protection devices gain in reliability when supplemented by backup devices. Enter 10x38 mm fuses to bolster the performance of industrial UL fuses. Littelfuse makes fast-acting and time-delayed 10x38 mm fuses for panels, small motors, and meters. Several incorporate POWR-GARD® technology, and some feature indicator pins that pop up when fuses blow. Another line of semiconductor fuses is available for other applications...
