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HDC Series*

HDC is a standard, heavy duty, modular connector series that conforms to IEC60664 and IEC61984 standards. Through the combination of different modules selected by the designer, the connector can handle different signal types such as power, signal, and data, without the need for separate connections. This flexibility makes the HDC series suitable for the electrical, optical, radio frequency, high-voltage, high-current, high-speed transmission for rail transportation, heavy machinery, wind energy, power systems, and photovoltaic and engineering equipment industries.

*HDC Series is a product from Huafeng Smiths Interconnect(HSI). HSI is a joint venture between Smiths Interconnect and Sichuan Huafeng Entreprise Group Co Ltd, specialized in the commercial aviation and railway markets in mainland China, providing ultra reliable and high-performance connectors and engineering solutions.

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Features & Benefits

  • The modular design with over 500 types of inserts enables HDC to continuously expand functions according to the needs of the application
  • Pre-assembled cables allow for higher production throughout
  • Through the combination of different modules selected by the designer the connector can handle different signal types such as power, signal, and ethernet/fiber optic data and pneumatic without the need for separate connections
  • Reduced cost of ownership through high performance and low maintenance
  • The waterproof and anti-corrosion characteristics of the metal shell ensure that HDC can work in harsh outdoor environments

High Current Data

  • Up to 650A and 5000V
  • Usage of cables up to 240mm² cross section
  • Up to 1000M data
  • transmission speed
  • 1-300 contacts number
  • Voltage rating: 30-4000V
  • Current rating: 4A,5A, 10A, 16A, 40A, 70A, 100A, 200A, 350A, 650A
  • Contact resistance: < 1 mOhm
  • Golden plated or silver plated

High Reliability

  • Design and test according to IEC61373/ IEC61984 ensure robustness and durability
  • Axial screw, crimp terminal, Spring terminal to fit different environment
  • Mass continuity
  • Temperature range:
  • -55°C +125°C
  • Sealing: IP66, IP67 PI68 acc. to DIN EN 60529 IEC 60529
  • Locking by screws and coding devices acc. to NF F 61030
  • Vibrations & shock: EN61373-1999


  • More than 500 mating / unmating cycles
  • High performance plastic material for electrical insulation
  • Corrosion-resistant alloy material
  • Meet the requirement of IP68 & IP69
  • Concealed seal design
  • Fire & smoke resistance: EN45545-2 R22 R23
  • Pollution degree:
  • PD3 – IEC60664-1


  • Flexible design allowing different  contact and cable sizes in the same connector
  • Number of poles can be customized according to
  • the need
  • Can be used in industry/Medical field


The HDC series includes small A type, high density D type, ultra-high density DD type, general E type, compact EE type, module MOD type, mixed K type, high voltage VE type and Q type. The ultra-high density HD & HM modular types can provide reliable connection to hundreds of key control points on the vehicle in the narrow space of the electrical cabinet. This greatly simplifies the wiring work and facilitates the later maintenance.

The HM coax electromagnetic shielding module is responsible for the transmission of control, field bus, network and other important signals in the bridging system, and has independent EMC functions to avoid signal crosstalk.

The waterproof and anti-corrosion characteristics of the metal shell ensure that HDC can work in harsh outdoor environments.

Series Data

Rectangular Connector -Inserts

  Rated voltage Rated current Number of contacts Wire Connection
HA Series
- slim inserts
3, 4,
10, 16, 32
Crimp / Screw
HE Series
-compact inserts
500V 16A 6, 10, 16, 24, 32, 48 Crimp / Screw
HVE Series
-high voltage inserts
3, 6, 10, 12, 20,
16, 32
HVES Series
-high voltage inserts
830V 16A 3, 6, 10, 12, 20 Spring
HEE Series
-high density inserts
*690V, 1000V
16A 10, 18, 32, 46, 40, 64, 92 Crimp
HD&HDD Series
-ultra-high density inserts
*400V, 500V 
HSB Series
-high heavy-current inserts
400/690V 35A 6, 12 Screw
HK Series
-combination inserts
160-830V 10A-100A various Crimp
HE AV Series -extendible inserts
HD AV Series -extendible inserts
6, 10, 16, 24
HM Series
-flexible and combined inserts
Fiber Optic / Pneumatic
5A-200A 1-42 Crimp
HQ Series
-compact inserts
230-690V 10A, 16A, 40A 2-17


HC Series
-high heavy-current inserts
1150-4000V 200A-650A 1-4 Crimp
Rectangular Connector Accessories (download Catalog)
Rectangular Connector Hoods/Housings  (donwload catalog)
Tools and Cable Glands (download catalog)
*By adjusting the layout of contacts, they could be applied up to 690V or 1000V. By adjusting the layout of contacts, they could be applied up to 400V or 500V.

Standard Compliance

IEC 60664-1

Insulation coordination for equipment within low-voltage supply systems – Part 1: Principles, requirements and tests

IEC 61984

Connectors--Safety requirements and tests


Railway applications – Rolling stock equipment – Shock and vibration tests


Connectors for Electronic Equipment - Tests and Measurements


Degrees of protection provided by enclosures (IP Code)


Fire protection ofrailway vehicles

Case Study

HDC Series helps improve environmental sustainability

Nowadays environmental sustainability is a trending topic that affects all aspects of our life with no geographical distinction as it is about responsibly interacting with the planet to maintain natural resources and avoid jeopardizing the ability for future generations to meet their needs. The continuous development and improvement of new green energy supplies is evidence of the positive response to stabilizing the current or past (if we want to be optimistic) disruptive relationship between Earth's two most complex systems: humans and the living world.

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