Description

The L70QS series is a next generation high-speed fuse

for the protection of power semiconductor devices and

is designed in the traditional North American bolted style

package.

L70QS series high-speed fuses are extremely current

limiting and are used to protect power converters, drives

and control circuit applications. Designed with lower I2t

performance characteristics, these fuses provide balanced

performance to extend longevity while lowering potentially

damaging heat energy to the devices being protected.

In addition L70QS series fuses have been designed with a

universal mounting option to meet customer requirements

for installation into a variety of application configurations

Littelfuse POWR-SPEED products offer optimized

circuit protection at the extremely fast speed required to

protect modern day, sensitive, high-power semiconductor

devices. Such products are commonly found in various

industries including pulp and paper industries, cranes and

heavy-lifting equipment, processing industries, wastewater

treatment plants and large factories and MRO facilities.

Features

 Compliance with US and Canadian requirements  Traditional North American bolted style dimensions

 Class aR performance  Direct bus-bar mount or stud mount design

 Halogen free, RoHS and REACH Compliant

Applications

 Power converters (inverters, rectifiers)

 Power supplies

 UPS

 Variable speed drives

 Control circuits

 Soft starters

Specifications

Voltage Rating Ac: 700 V

Dc: 700 V

Amperage Rating 35–800 A

Interrupting Rating Ac: 200 kA

Dc: 50 kA

Time Constant 10 ms

Material Body: melamine

Caps: copper alloy (silver plated)

Approvals UL Recognized (E71611)

cURus (E71611)

Environmental RoHS Compliant, REACH

Country of Origin Mexico

Operating Temperature -55 °C to +125 °C

Storage Temperature Up to 35 °C with relative humidity