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Series: HWB18

58V 100A Hard-Wired Waterproof DC Power Distribution Box for MINI Fuses, Circuit Breakers & Relays
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Ideal for use as the main unit on small vehicles or for accessory circuits and overflow circuits from your main power distribution module (PDM), the compact HWB18 Hard-Wired Waterproof DC Power Distribution Box accepts MINI® fuses, MINI® circuit breakers, MCASE™ fuses (adapter required; sold separately), 4-pin single-pole, single-throw (SPST) relays, and 5-pin single-pole, double-throw (SPDT) relays.

This hard-wired PDM allows you to customize your own circuitry utilizing direct wire-to-component connections which are crimped to the wire harness with grommets to seal the bottom of the module. Terminal position assurance (TPA) locks offer secondary protection to keep the wires in place. The HWB18 series uses Delphi Metri-Pack 280 terminals, cable seals, and cavity plugs (sold separately).

Featuring a black cover with a gasket, this dust-tight, waterproof power distribution box carries an IP67/IP69K rating, and it features latches that keep the cover securely in place. The base and cover accept a tether (873-680; not included) that helps prevent loss of the cover during service.

  • Holds nine MINI® fuses or a combination of MINI fuses, MINI circuit breakers, MCASE™ fuses, 4-pin SPST relays, and 5-pin SPDT relays
  • Maximum total continuous current rating of 100 A @ 23 °C and 70 A @ 85 °C
  • Black cover is sealed to IP67/IP69K standards for waterproofing and dustproofing
  • Available with TPAs to help prevent disconnection of wires due to vibration and accidental snagging
  • Optional foam pad available on the inside of the cover for relay retention
  • Thermoplastic base and cover with a UL 94 V-0 flammability rating
  • Meets UL 583 standards for use in material handling equipment and electric-battery-powered industrial trucks

HWB18 Parts

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HWB18 Applications

Highlights Section

  • Work Trucks and Specialty Equipment
  • Emergency Vehicles
  • Construction Site Support Equipment
  • Oil and Gas Drilling Equipment
  • Marine Vehicles and Equipment

Highlights Section

  • Work Trucks and Specialty Equipment
  • Emergency Vehicles
  • Construction Site Support Equipment
  • Oil and Gas Drilling Equipment
  • Marine Vehicles and Equipment

Series: HWB18 Resources

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HWB18 Custom Products Request

Need your HWB18 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.
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