Y - High Voltage Unipole

Single contact ​high voltage connectors ​in high grade materials​
Y - High Voltage Unipole
High voltage requirements (5-50 kV DC)
Push-Pull latching system
Optional safety locking device
Main Features
High voltage requirements (5-50 kV DC)
Push-Pull latching system
Optional safety locking device
Reliable High quality and performance interconnect solutions
Modular and custom made complete solutions
Worldwide presence with local experts, stock management and cable assembly everywhere

Form & Material

Broad metallic high quality circular connector range for high voltage requirements (5-50 kVDC)
Latching system
Push-Pull latching system enabling simple/quick yet safe and reliable frequent connect and disconnect
Field proven solid & compact construction, available with safety switch
Ergonomic design thanks to patented chocolate pattern
Model and size
Various sizes and models including miniature, watertight and vaccumtight models

Electrical configurations

Insert configurations
Large selection of high voltage insert configurations
360° screening for full EMC shielding
icon pdf
High voltage single contact connectors (Y, S, E and 05 series)
icon pdf
Solutions Selection Guide
Suitable applications
Specialities & Other
specialities other
Use the table to compare the 3 main series within the SUPREME connector family and to identify the connector(s) best adapted to your specific requirements.
N - Nuclear Stainless Steel

N - Nuclear Stainless Steel

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W - Underwater

W - Underwater

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Y - High Voltage Unipole

Y - High Voltage Unipole

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Description Description Flawless performances in highly regulated environments such as nuclear hot cells Description High water pressure screw locking connectors designed for demanding marine and underwater applications Description Single contact high voltage connectors in high grade materials
Locking Locking Push-Pull telemanipulator Locking Screw locking Locking Push-Pull
Size Size 4 sizes from ø 22.0 to ø 45.0 mm (plugs) Size 6 sizes from Ø 17.2 to 50.0 mm (plugs) Size 3 sizes from Ø 13.0 to 47.0 mm (plugs)
Keying Keying 2 keyway Keying 4 keyway Keying No keyway (unipole)
Shell Types Shell Types Special shell design​ Shell Types Over 9 shell styles Shell Types Over 19 shell styles
Shell Material Shell Material Stainless steel Shell Material Stainless steel or Brass Shell Material Brass
Plating Plating - Plating Chrome on brass version Plating Chrome
Cable Diameter Cable Diameter 6.1 to 30.0 mm Cable Diameter 1 to 23.5 mm Cable Diameter 1.2 to 31.3 mm
NB of contact NB of contact 2 to 64 NB of contact 1 to 64 NB of contact 1
AWG AWG 8 to 32 AWG 8 to 32 AWG 2 to 21
Contact types Contact types Multipole • Coax Contact types Multipole • Coax • Fibre • Fluidic Contact types High Voltage
Contact Termination Contact Termination Solder / Crimp Contact Termination Solder / Crimp / Print (PCB) Contact Termination Solder
Test Voltage Test Voltage up to 3.6 kV (rms) Test Voltage up to 3.6 kV (rms) Test Voltage up to 70 kV (rms)
Sealing Level Sealing Level IP66 Sealing Level IP68, 30 bars Sealing Level IP50
Temperature Range Temperature Range -40°C to 160°C Temperature Range -20°C to 200°C Temperature Range -55°C to 230°C
Mating Cycles Mating Cycles > 5000 Mating Cycles > 1000 Mating Cycles > 1000
Y - High Voltage Unipole

Designed for high voltage applications, Y series single contact, self-latching, connectors have a test voltage from 5 to 50 kV DC and offer thus an extremely favourable size/voltage ratio. The Push-Pull latching system enables rapid, safe and reliable connection/disconnection and a version with a microswitch is available to prevent power from being turned on before the plug is mated. Various sizes, watertight and vacuum-tight models are available. Suitable for applications in the nuclear research, automative, test and measurement, defence and aerospace sectors.


LEMO Connected 20 announce
Article • 05 December 2023

Innovations galore in Connected 20

Discover the 20th edition of our magazine, dedicated to innovation and innovators, showcasing varied and exciting content, that you have come to expect.

Adresys Connected 20
Article • 01 December 2023

The angel wears T-shirts

In the event of a severe electric shock, reaction speed is vital. So, the Austrian company Adresys has come up with a solution that is both high-tech and discreet to detect accidents and raise the alarm : a smart T-shirt.

Article • 06 August 2023

New multi coaxial model with High frequency performance

LEMO is thrilled to announce the expansion of its field-proven M Series with a new multi coaxial configuration, named LM.232, available in size LM with up to 12x coaxial contacts. These new plugs and fixed sockets have been specifically designed to satisfy the most stringent high frequency connection requirements under very demanding environmental conditions.This new insert configuration integrates 12x coaxial contacts type 0R (50 Ohm), allowing the transmission of high frequency data up to 26.5 GHz with a low Voltage Standing Wave Ratio (VSWR). The coaxial contact is easy to mount, thanks to its crimp contact and retaining clip. It is designed to be terminated with flexible low-loss communication cable LMR-100A or MULTIFLEX 86.Typical applications are wireless network 5G wireless networks, radar systems, battlefield communications and UAV anti-drone technology.Thanks to its expertise and cable assembly capabilities, LEMO is at your disposal to assist you in providing complete interconnect solutions.

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