Commercial Vehicle Product Datasheet HWB18 SEALED POWER DISTRIBUTION MODULE Compact Hard-Wired PDM for 280 Style Components Specifications Overview 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. Max Fuse Rating: 30A per circuit Max Continuous Current: 100A Number of Cavities 18 Operating Temp: -40 °C to +105 °C Ingress Protection: IP67/IP69K 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. Ordering Information • Accepts any mini (280 style) circuit protection component. • Compact size allows the unit to be installed in vehicles with limited space. PART NUMBER COVER BLACK CLEAR TPA • Ideal for accessory circuits, overflow circuits from main or as a main module on smaller vehicles. PDM31001ZXM • • PDM31002ZXM • • • IP67/IP69K sealed units can be installed virtually anywhere on the vehicle and stands up to road splash and salt spray. PDM31003ZXM • PDM31004ZXM • • TPAs (terminal position assurance locks) give secondary locking protection of the wire leads, which help keeps leads securely in place. MOUNTING BRACKET FOAM • 30° • • • • • UR file number: AU6325 TPA: Terminal Position Assurance secondary locks for wire terminals • Wires plug into the back of the unit using industrystandard Delphi Metri-Pack Series 280 tanged terminals. Accessories and Service Parts • 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. PART NUMBER DESCRIPTION 868-965 873-032 901-106 873-680 883-084 901-320 868-964 868-068 Base Cover Cover seal Tether TPA Foam 90° angle mounting bracket 30° angle mounting bracket • A UL certification for this fuseholder means it can be used as a component in material handling and electric-batterypowered industrial truck applications with confidence that it meets the requirements of UL 583 standards. littelfuse.com 1 of 2 © 2017 Littelfuse Commercial Vehicle Products Rev: 101217 Commercial Vehicle Product Datasheet HWB18 SEALED POWER DISTRIBUTION MODULE Specifications Max Fuse Rating 30A per circuit Max Continuous Current 100A at 23 °C, 70A at 85 °C Number of Cavities 18 Recommended Mounting M6 bolt and lock washer Mounting Bracket Torque 5.5-6.5 Nm -40 °C to +105 °C Temperature Range Ingress Protection Rating IP67/IP69K Dimensions 80.4x69.8x45.2 mm Wire Sizes 0.35-3.00 mm² Mating Terminals & Seals Delphi Metri-Pack 280 Sealed female (tanged) See chart below for details. Sold separately. Accessories Optional: Cover tether, mounting bracket, TPAs, 30° angle bracket, 90° angle bracket Mating Terminals and Seals Compatibility Wire Size Range (mm2) Insulation Diameter (mm) Terminal Cable Seal 0.50-0.35 mm² 1.84-2.51 mm 12084201 12089679 / 12041351 1.00-0.80 mm² 2.03-3.12 mm 12077411 12041351 / 12015323 3.00-2.00 mm² 2.45-3.80 mm 12129493 12015323 / 12015359 Cable Plug 12010300 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 2 of 2 © 2017 Littelfuse Commercial Vehicle Products Rev: 101217