POWR-SPEED® Fuse
L70QS SERIES HIGH-SPEED ROUND BODY
700 V ac/dc • Very Fast Acting • 35–800 A
HF
Specifications
Voltage Rating
Ac: 700 V
Dc: 700 V
Amperage Rating
Interrupting Rating
35–800 A
Ac: 200 kA
Dc: 50 kA
Time Constant
Material
10 ms
Body: melamine
Caps: copper alloy (silver plated)
Approvals
UL Recognized (E71611)
cURus (E71611)
Environmental
Country of Origin
RoHS Compliant, REACH
Mexico
Operating Temperature
Storage Temperature
-55 °C to +125 °C
Up to 35 °C with relative humidity <65 %
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.
Part Numbering System
L70 QS 700 .X
Series
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.
Body Type
Package Quantity
X = 1 (225–800 A)
V = 5 (35–200 A)
Ampere Code
Refer to Ordering
Information table
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
BODY AMPERE PACKAGE CATALOG
TYPE CODE QUANTITY NUMBER
ORDERING
NUMBER
SERIES
L70
QS
700
1
L70QS700
L70QS700.X
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.
Recommended Fuse Blocks
LSCR001 (35–100 A)
LSCR002 (125–800 A)
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
Web Resources
Download technical documents: Littelfuse.com/L70QS
ꢁꢀ
ꢁꢀ
ꢁꢀ
Note: high-speed fuses are designed for fixed installations. They are not
intended for use in moving vehicle applications.
ꢁꢀ
ꢁꢀ
Littelfuse.com/L70QS
© 2020 Littelfuse, Inc.
1 of 11
Rev: 092820