High Power Connectors
Delivering substantial electrical power safely and reliably is a fundamental challenge in high-performance systems. Where standard connectors fall short under high amperage and voltage, risking performance degradation and system failure, LEMO provides a robust solution. We engineer high power connectors to ensure consistent performance for your most critical applications
LEMO's high power connector solutions:
Why thermal management is critical in High Power Connectors?
High power applications demand a rigorous approach to component selection. The combined heat from the Joule effect (resistive heating) and the maximum operating temperature must never exceed the component's thermal limits. This is a fundamental principle of system safety and reliability.
How to calculate current capacity using Derating Curves?
A derating curve is the primary tool for defining a connector's true current-carrying capacity. It illustrates the maximum continuous current a connector can handle as ambient temperatures fluctuate, factoring in the heat generated by the Joule effect.
To ensure performance and mitigate risks from current spikes or measurement variables, a standard safety factor of 0.8 is typically included in these calculations.
Practical Example:
Consider a battery connector for an e-Formula 1 car operating at an ambient temperature of 50°C. At this temperature, the current that can pass through a 10 mm² cable is 120A.
- If the ambient temperature drops to 25°C, the capacity increases to 130A.
- If the ambient temperature rises to 100°C, the capacity drops significantly to 95A.
This example highlights why it is critical to clarify both the ambient operating temperature and the required current when selecting your high-power connector.
However, the limiting factor is often the cable itself, not the connector. As your engineering partner, LEMO assesses the entire system. We emphasise that special attention is required in selecting the cable, as this is just as crucial for overall performance and safety.
Technical features
of LEMO High Power Connectors
High power handling with low resistance
The primary function of a high power connector is to transmit current efficiently. Our solutions are engineered to handle this core task with unparalleled proficiency.
- High Current Ratings: LEMO connectors are designed to handle significant amperage, with options available for a wide range of power requirements.
- Low Contact Resistance: Through superior material science and contact design, we achieve minimal voltage drop across the connection, maximising power efficiency.
- Diverse Contact Sizes: We offer a variety of pin and socket sizes to match your specific cable and power needs, ensuring a perfect fit and optimal performance.
LEMO M Series, engineered for demanding applications
LEMO M series ratchet coupling High Power connectors were developed to satisfy the most stringent connection requirements for High Power distribution. As industries including automotive, transportation, defence, aerospace, robotics, and motorsport see increasing power requirements, this portfolio provides a comprehensive, compact, light, rugged, safe, and completely waterproof reliable interconnect solution.
This new LEMO M series High Power portfolio constitutes one of the most comprehensive interconnect solution sets available on the market for high power requirements. We integrate these features to ensure system integrity, operational safety, and long-term durability in your most demanding environments.
Dedicated LEMO documentation for High Power Connectors
Your Partner in High Power Connectivity
Choosing the right connector is a critical design decision. At LEMO, we provide more than just a component; we offer a partnership.
Our team of experienced engineers is ready to help you solve your most complex connectivity challenges, ensuring you have a solution that is perfectly aligned with your technical and commercial objectives. Contact our technical experts to discuss your project requirements or to request a custom-designed high power solution.