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HBB Series

High Power, Quick Release Circular Connectors

Smiths Interconnects' circular HBB connectors combine high current handling capability with small size and exceptional performance in harsh environments. Suitable for applications requiring the transmission of high currents (up to 500A) including aerospace, defense, aviation, transportation, industrial, auto/EV, alternative energy, and oil & gas markets. Hypertac® hyperboloid contact technology guarantees high reliability under harsh environmental conditions.

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  • Communications: Airborne - Vehicle & Naval
  • Communications: Ground Based
  • Communications: Man-portable
Defense Overview


  • Heavy Equipment & Machinery
  • Servo Drives and Encoders
  • Power Suppliers
Industrial Overview


  • Rolling Stock - Power Distribution: Energy Storage Systems
Rail Overview

Features & Benefits

HBB single pole, circular connectors combine high current handling capability with small size and exceptional performance in harsh environments. Designed for use in all types of high-power applications, the HBB series is particularly suitable for electric drives used in fighting vehicles, unmanned vehicles, rail transport and industrial applications.

High currents can be easily transmitted with the smallest possible size: Size 17, single-pole, attains 300 amps and size 21, single-pole, 500 amps with high reliability and excellent integrity. Hypertac® hyperboloid contacts produce contact resistance figures as low as 0.03mΩ, which help in reducing resistive losses. This both eases the task of thermal management and allows better power handling in a smaller space with a lower overall mass. HBB connectors are designed for easy insertion and quick release (Push-to-Mate). The connectors offered in metal shells, sealed to IPx7, feature 360° EMI/RFI shielding and have a polarized design with options that ease assembly allowing simple maintenance and quick changeover.

  • Current rating 300 A and 500 A
  • Simple push lock to mate connector
  • Quick release latch to unmate
  • Rugged metal and plastic versions available
  • 360° EMI/RFI shielding option
  • Sealed IPx7 and IP6K9K when mated
  • RoHS compliant Black Zinc Nickel, zinc-cobalt plated or nickel plated shells

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