Technical Data 1004

Effective August 2018

Supersedes March 2017

LPN-RK — 250 Vac/dc, 70-600 A,

dual element, time-delay fuses

Catalog symbols:

•

LPN-RK-(amp)SP (non-indicating)

•

LPN-RK-(amp)SPI (indicating)

Description:

Ultimate protection Class RK1 dual element,

current-limiting, time-delay fuses available with

optional open fuse indication.

Specifications:

Ratings

•

Volts 250Vac/dc*

•

Amps 70-600 A

•

IR

•

300kA Vac RMS Sym.

•

100kA Vdc

* Indicating versions not Vdc rated.

Agency information

•

UL Listed, Guide JDDZ, File E4273

•

CSA Certified, Class 1422-02, File 53787,

Class RK1 per CSA C22.2 No. 248.12

•

CE

Catalog no.*

LPN-RK-70SP

LPN-RK-150SP

LPN-RK-350SP

LPN-RK-80SP

LPN-RK-175SP

LPN-RK-400SP

LPN-RK-90SP

LPN-RK-200SP

LPN-RK-450SP

LPN-RK-100SP

LPN-RK-225SP

LPN-RK-500SP

LPN-RK-110SP

LPN-RK-250SP

LPN-RK-600SP

LPN-RK-125SP

LPN-RK-300SP

* Open fuse indication available on all part numbers by

inserting the suffix “I,” e.g., LPN-RK-90SPI. Requires 75Vac

minimum voltage. Indicating fuses are not Vdc rated.

Carton quantity

•

70–100 A: 5

•

110–600 A: 1

Typical applications

•

Feeder and branch circuits

•

Transformers

•

Motors

•

Solenoids

•

General purpose circuits

Features and benefits

•

Industry’s only UL Listed and CSA Certified fuse

with a 300 kA interrupting rating that allows for

simple, worry-free installation in virtually any

application.

•

Fast short-circuit protection and dual-element,

time-delay performance provide ultimate

protection.

•

Reduces existing fuse inventory by up to 33%

when upgrading to Low-Peak fuses.

•

Consistent 2:1 ampacity ratios for all Low-Peak

fuses make selective coordination easy.

•

Time-delay permits 130% FLA sizing for back-up

motor protection.

•

Current-limitation protects downstream

components against damaging thermal and

magnetic effects of short-circuit currents.

•

Protects against single-phase motor damage.

•

Proper sizing can provide “no damage” Type 2

coordinated protection for NEMA and IEC motor

controllers.