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Series: HWA20

32V Hard-Wired Waterproof ATO® Fuse Box
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Thanks to electronically isolated input and output connections, the HWA20 Series 32V Hard-Wired Waterproof ATO® Fuse Box allows you to achieve customized circuit protection with up to 10 ATO® blade fuses (sold separately).

This compact, IP67-rated waterproof fuse holder is dust-tight and protected against temporary immersion in water, which means it can be installed nearly anywhere on a vehicle.

Plus, if you ever need to expand a vehicle's circuit protection capacity, the HWA20 Series modular fuse block can be connected to additional units or compatible power distribution modules and fuse holders, including FLEC, HWB60, HWB18, MEGA® Flex, and MIDI® Flex models.

  • Compact, 20-cavity hard-wired fuse box fits 10 ATO® blade fuses (sold separately)
  • Handles 40A continuous current per circuit and 210 maximum continuous current overall
  • Sealed, IP67-rated, waterproof fuse holder can be installed virtually anywhere on a vehicle and stands up to road splash and salt spray
  • Dovetail slots on the sides make it a modular fuse box that can be connected to other fuse holders to easily expand circuit protection capacity
  • Wires plug into the back of the unit using industry-standard Tyco sealed power terminals, making the fuse box easy to connect
  • Terminal position assurance (TPA) locks help prevent disconnection of wires due to vibration and accidental snagging

HWA20 Parts

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HWA20 Applications

Highlights Section

  • Overflow Circuits from a Main Power Distribution Module
  • Main Power Distribution Module on Small Vehicles
  • Accessory Circuits

Series: HWA20 Resources

HWA20 Related Products

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HWA20 Custom Products Request

Need your HWA20 parts customized? Please let us know about yourself and your project needs, and a Littelfuse expert will be in touch about customizing our product(s) for you.

Project Details

Please indicate circuits, amperage per circuit, fuse/relay/circuit breaker count, CAN/LIN functionality, and all other product requirements for your application. 
Please list any additional requirements not indicated above that Littelfuse should be aware of in making recommendations.
If you have a current solution, who manufactures your current product?
If you have a current solution, what part number are you using?
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If you require the product to operate in extreme environments, please indicate IP, vibration, shock or any other special environmental conditions.
Please list any UL, SAE, RoHS, or other agency approvals you require for this product.