
Series: HWB18
58V 100A Hard-Wired Waterproof DC Power Distribution Box for MINI Fuses, Circuit Breakers & Relays







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
Filters
Part Number | Actions | Fuse Type | Current Rating (Continuous per Circuit) in Amps (A) | Current Rating (Continuous) in Amps | Ingress Protection | Number of Cavities | Dimensions | Temperature Maximum (°C) | Temperature Minimum (°C) | Mounting Method |
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Part Number | Actions | Fuse Type | Current Rating (Continuous per Circuit) in Amps (A) | Current Rating (Continuous) in Amps | Ingress Protection | Number of Cavities | Dimensions | Temperature Maximum (°C) | Temperature Minimum (°C) | Mounting Method | |
---|---|---|---|---|---|---|---|---|---|---|---|
0.525 H x 0.945 W x 3.139 L in. | |||||||||||
2.7021 H x 1.3421 W x 1.834 L in. | |||||||||||
3.1625 H x 1.151 W x 2.325 L in. | |||||||||||
1.447 H x 0.3265 W x 0.635 L in. | |||||||||||
0.277 H x 1.3 W x 2.344 L in. | |||||||||||
MINI | Relays | 30A | 100 | IP67 | 18 | 3.155 H x 2.8325 W x 2.613 L in. (60 mm) | 85 | -40 | Mounting Bracket Included | |||
MINI | Relays | 30A | 100 | IP67 | 18 | 3.1625 H x 1.8315 W x 2.6315 L in. (60 mm) | 85 | -40 | Mounting Bracket Included | |||
MINI | Relays | 30A | 100 | IP67 | 18 | 2.673 H x 1.835 W x 3.1585 L in. (60 mm) | 85 | -40 | Mounting Bracket Included | |||
MINI | Relays | 30A | 100 | IP67 | 18 | 3.1605 H x 1.8345 W x 2.6145 L in. (60 mm) | 85 | -40 | Mounting Bracket Included |
HWB18 Applications
- 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

Power Distribution Modules Brochure
Find information about the dc power distribution solutions we offer for heavy trucks, agricultural vehicles, and construction and mining equipment.

Littelfuse-Commercial Vehicle Catalog
Find electronic components for trucks, buses, and construction, agricultural, marine, material handling, recreational, and marine vehicles.

Fuse Holder Brochure
Find solutions for securing, protecting, and connecting fuses used for overcurrent protection in passenger and commercial vehicles.

Customizing Power Distribution: A Hard-Wired PDM White Paper
Learn how incorporating hard-wired power distribution modules in new vehicle designs can solve multiple circuit protection and current control

Automotive Fuse Holder 3D Models
Download detailed renderings of PDMs for commercial vehicles and have them ready to plug into 3D models of new products.