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Jennings offers over five decades of expertise in state-of-the-art vacuum technology for the electrical, industrial, communications and power industries. Jennings holds the notable recognition of creating the first high voltage vacuum, variable capacitor. Today, Jennings is known worldwide as a leader in non-thermionic vacuum components offering a full line of products including vacuum and gas filled capacitors and relays, vacuum interrupters, vacuum contactors, vacuum coaxial relays, switching matrices and test and measurement equipment.