High Voltage Connectors
In critical systems where electrical safety and signal integrity are paramount, the choice of connector is a defining factor for reliability. LEMO high voltage connectors are engineered to provide secure, stable power delivery in the most demanding applications. We combine decades of Swiss engineering expertise with high-quality materials to produce components that guarantee performance when it matters most. Your system's durability and efficiency depend on the quality of every component; we ensure our connectors meet the highest industry standards.
High Voltage connector solution adapted to your application
Every high voltage application presents unique challenges in terms of voltage, current, and environmental conditions. LEMO offers a versatile portfolio of connectors — from compact single-pin models to complex multi-contact interfaces — designed to meet these demands with precision and reliability.
Choosing the right connector goes beyond part numbers. Our engineering approach considers altitude, humidity, dust, temperature variations, and duty cycles — all factors that influence real-world performance. We offer single- and multi-pin configurations with advanced insulation materials (PEEK, PTFE, fluorosilicone) and geometries optimized for creepage and clearance distances to reduce arcing and corona risks.
Safety features such as interlocks, scoop-proof designs, and IP68 sealing ensure protection for both operators and equipment. Whether you need compact connectors for medical devices under 1 kV, ruggedized solutions for aerospace and defense, or hermetically sealed designs for research environments, we provide both catalogue and fully customized options. With LEMO, you gain access to decades of Swiss engineering and compliance with international standards (IEC, UL, ISO, CSA).
We don’t just supply connectors — we deliver tailored high voltage connection systems built to match your exact electrical, mechanical, and environmental requirements.
Trusted in Demanding Environments
LEMO connectors are trusted across industries where reliability is non-negotiable. From deep-sea exploration to aerospace missions, our solutions support critical systems exposed to extreme conditions. We engineer each high voltage connector to exceed industry standards for safety, durability, and performance.
Solutions for defence, aerospace and automotive
In the defence, aerospace, and automotive sectors, components must withstand severe mechanical and environmental stress. Our high voltage connectors are designed to maintain a secure electrical interface under high shock and vibration conditions. With options for 360° electromagnetic compatibility (EMC) shielding, they ensure signal integrity for sensitive equipment such as radar systems, avionics, and electric vehicle battery management systems. The compact and lightweight design of our connectors also contributes to overall system efficiency, a critical factor in these industries.
High voltage connectors for medical and measurement
The medical and test and measurement fields demand the highest levels of precision and operator safety. Our connectors are integral components in life-saving medical devices like defibrillators and advanced diagnostic imaging equipment. With high-quality insulation and carefully managed creepage and clearance distances, they ensure safe operation for both patients and healthcare professionals. The exceptional reliability and efficiency provided by products like the REDEL 2P High Voltage Series makes them a trusted choice for high-precision scientific instrumentation where accurate voltage transmission is essential, including high pulsed voltage for PFA application for instance.
Technical specifications and customisation
Selecting the right high voltage connector involves a detailed analysis of its technical specifications. We provide clear and comprehensive data to help you make an informed decision. For a deeper understanding of the key electrical and mechanical parameters, we encourage you to read our whitepaper on how to specify high voltage connectors. This resource offers expert guidance on ensuring the safety and performance of your system.
Some of key parameters to consider are:
Electrical Isolation and Insulation
High-voltage components must be isolated from low-voltage or grounded components. This is typically achieved by using dielectric (insulating) materials, such as polymers with a high dielectric constant. However, even the most advanced materials have their own limitations. That is why, to further enhance performance, our expert design engineers use specific geometries to maximize creepage and clearance distances.
Dedicated LEMO documentation for High Voltage Connectors
Request a custom high voltage solution
Your most ambitious projects may require a connector solution that goes beyond standard catalogue options. We are more than a component supplier; we are your engineering partner.
If your application demands a unique configuration, a specific cable assembly, or a completely new interface design, our team of experienced engineers is ready to collaborate with you. We excel at developing custom solutions that are perfectly tailored to your system's electrical, mechanical, and environmental specifications. Contact our technical experts to discuss your project and begin designing a custom high voltage connector solution built for performance and reliability.