Commercial Vehicle Product Datasheet
HWB18 SEALED POWER DISTRIBUTION MODULE
Compact Hard-Wired PDM for 280 Style Components
Specifications Overview
Max Fuse Rating:
Max Continuous Current:
Number of Cavities
Operating Temp:
Ingress Protection:
30A per circuit
100A
18
-40 °C to +105 °C
IP67/IP69K
Description
The HWB18 Compact Hard-Wired Box features 18 cavities
that accept 2.8mm fuse and relay components and is the
perfect fit for accessory circuits and overflow circuits from
your main Power Distribution module. The HWB18 can hold
plug-in components including MINI fuses, MINI format circuit
breakers, 4-pin single throw relays, and 5-pin double throw
relays. The HWB18 features durable construction, an IP67/
IP69K rating, and a compact size. The user can customize
their own circuitry utilizing direct wire-to-component
connections which are crimped to the wire harness with
grommets to seal the bottom of the module.
Applications
• Accessory circuits
• Overflow circuits
• Main unit on small vehicles
Web Resources
Download 2D print and technical resources at:
littelfuse.com/hwb18
Features and Benefits
• Cover latches keep the cover sealed and securely in place.
• Accepts any mini (280 style) circuit protection component.
• Compact size allows the unit to be installed in vehicles
with limited space.
• Ideal for accessory circuits, overflow circuits from main or
as a main module on smaller vehicles.
• IP67/IP69K sealed units can be installed virtually anywhere
on the vehicle and stands up to road splash and salt spray.
• TPAs (terminal position assurance locks) give secondary
locking protection of the wire leads, which help keeps
leads securely in place.
• Wires plug into the back of the unit using industry-
standard Delphi Metri-Pack Series 280 tanged terminals.
• Available with or without steel mounting bracket. Module
snaps into bracket, and is held at 30° angle or 90° angle
(bracket dependent) to allow easy viewing and servicing
• Tethers available to prevent loss of cover during service.
• Optional grid on inside cover available; functions as relay
retention insert
• HWB18, HWB12 & HWB6 share the same mounting
bracket so electrical system modification can be performed
without bracket or sheet metal alterations.
• A UL certification for this fuseholder means it can be used
as a component in material handling and electric-battery-
powered industrial truck applications with confidence that
it meets the requirements of UL 583 standards.
littelfuse.com
Ordering Information
PART NUMBER
PDM31001ZXM
PDM31002ZXM
PDM31003ZXM
PDM31004ZXM
COVER
BLACK CLEAR
•
•
•
•
•
•
TPA
•
•
FOAM
•
•
•
•
MOUNTING
BRACKET
30°
UR file number: AU6325
TPA: Terminal Position Assurance secondary locks for wire terminals
Accessories and Service Parts
PART NUMBER
868-965
873-032
901-106
873-680
883-084
901-320
868-964
868-068
DESCRIPTION
Base
Cover
Cover seal
Tether
TPA
Foam
90° angle mounting bracket
30° angle mounting bracket
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© 2017 Littelfuse Commercial Vehicle Products
Rev: 101217
Commercial Vehicle Product Datasheet
HWB18 SEALED POWER DISTRIBUTION MODULE
Specifications
Max Fuse Rating
Max Continuous Current
Number of Cavities
Recommended Mounting
Mounting Bracket Torque
Temperature Range
Ingress Protection Rating
Dimensions
Wire Sizes
Mating Terminals & Seals
Accessories
30A per circuit
100A at 23 °C, 70A at 85 °C
18
M6 bolt and lock washer
5.5-6.5 Nm
-40
°C to +105 °C
IP67/IP69K
80.4x69.8x45.2 mm
0.35-3.00 mm²
Delphi Metri-Pack 280 Sealed female (tanged) See chart below for details. Sold separately.
Optional: Cover tether, mounting bracket, TPAs, 30° angle bracket, 90° angle bracket
Mating Terminals and Seals Compatibility
Wire Size
Range (mm
2
)
0.50-0.35 mm²
1.00-0.80 mm²
3.00-2.00 mm²
Insulation
Diameter (mm)
1.84-2.51 mm
2.03-3.12 mm
2.45-3.80 mm
Terminal
12084201
12077411
12129493
Cable Seal
12089679 / 12041351
12041351 / 12015323
12015323 / 12015359
12010300
Cable Plug
Sold separately. Available from Delphi.
Dimensions in millimeters
Visit
Littelfuse.com
for the most up-to-date product information. Littelfuse reserves the right to make product changes, without notice.
Material in this document is as accurate as known at the time of publication.
littelfuse.com
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© 2017 Littelfuse Commercial Vehicle Products
Rev: 101217
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