© 2017 Littelfuse Commercial Vehicle Products
Rev: 022817
littelfuse.com
1 of 2
Product Datasheet
XT SERIES FUSE BLOCK (POWER DISTRIBUTION MODULE)
350A • 7 Fused Circuits • Integrated Sealed Low-Amp Plug Outputs
Specifications Overview
Max Voltage 32V DC
Max Total Fuse Amperage: 350A (1X 4/0 input cable)
Max Continuous Current
per Circuit:
MIDI: 170A (85% of max fuse rating)
ATO: 30A (85% of max fuse rating)
Number of Fuses 7 Total (4 ATO & 3 MIDI)
Operating Temp: -55° C to +125° C
Ingress Protection: IP59K
Web Resources
Download technical resources at:
littelfuse.com/XT
Datasheet Replaces Hotfeed Number D-660
Description
Useful combination of fusing protects 3 high-amp circuits
such as vehicle control modules, inverters, auxiliary circuits,
and four ATO fuses for low-amp circuits including clock
memory, alarms, tachograph, and Qualcomm modules.
Ignition protected to SAE J1171 and ISO 8846 for installation
in a battery box, or on vehicles carrying hazardous loads.
Water and dust-resistant to IP59K, permitting high
temperature, high pressure washing. Provides the benefit
of a sealed cover, but allows water to escape if the cover is
mistakenly unsecured. Cover is tethered and is positively
secured with two snap-shut latches.
Compact unit (less than 6” x 4” x 1.75”) for multiple
installation options. Tin-plated copper studs provide maximum
conductivity and significantly lower contact resistance;
stainless steel hardware provides superior corrosion
resistance. Also available with pre-installed fuses to customer
needs.
This product is customer-limited. Please consult Littelfuse for
details.
Features and Benefits
• Single compact box combines 3 high-amp (30A-200A)
MIDI
®
circuits with 4 low-amp (1A - 40A) ATO
®
circuits
• Sealed cover protects internal fuses from harsh
weather environments
• Withstands high temperature, high vibration and roadsplash
• Eliminates significant factory or field interconnections.
• Available with pre-installed fuses to meet customer
needs and reduce installation time. Minimum order
quantity applies.
Ordering Information
Note: This product is customer limited.
Contact Littelfuse details.
PART NUMBER DESCRIPTION
880073 Assembly (Harness & Fuses Sold Separately)
Fuses sold separately
© 2017 Littelfuse Commercial Vehicle Products
Rev: 022817
littelfuse.com
2 of 2
Product Datasheet
Specifications
Max Total Fuse Amperage 350A (1x 4/0 input cable)
Max Continuous Voltage (limited by fuses) 32V DC
Max MIDI Continuous Current per Circuit 170A (85% of max fuse rating)
Max ATO Continuous Current per Circuit 30A (85% of max fuse rating)
High-Amp Terminal Stud Size M8 x 1.25mm (accepts 5/16” and M8 Terminals)
Recommended High-Amp Ring Terminal 5/16” (M8)
Mounting Holes 9mm (for M8 or 5/16” hardware)
Temperature Range -55° C to +125° C
Humidity 0-95% RH
Shock 50 G
Vibration 8 G
Ingress Rating IP59K
Ignition Protection Meets ISO 8846 & SAE J1171
4-Position Connector (required for low-amp wire harness)
Connector Housing: FCI 2.8mm female 4-way
Wire Terminals: Apex female 2.8mm
Weight 1.1lb (0.5kg)
Configurations
XT SERIES FUSE BLOCK (POWER DISTRIBUTION MODULE)
Visit Littelfuse.com for the most up-to-date product information. Littelfuse products are designed for specific applications and should not be used for any purpose (including, without limitation, automotive
applications) not expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in
applicable Littelfuse product documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable
Littelfuse product documentation.