Pure high-pressure gas enables relays to attain high dielectric strength and avoid oxidation. This dielectric is ideal for the high in-rush capacitive make and capacitive discharge loads. Gas-filled relays also provide low, stable leakage current in applications sensitive to current fluctuations, especially across open contact sets over long periods of time.
Gas-filled relays, however, should not be used when it is necessary to break a current. As the contacts open, the gas is ionizing and an arc is formed and sustained for much longer than in vacuum.
The contact resistance of Jennings gas-filled relays is typically measured at 28 V and will be higher and not as stable as in a vacuum relay.
Jennings gas-filled relays product selection
|Type||Test voltage (kV peak @ 60 Hz)||Max. cont. Current (amps RMS)|