The Mercury 2481 Series Displacement Contactors switch high current loads quietly and reliably. The mercury-to-metal contact arrangement reduces noise and overheating, allows rapid cycling rates up to 20 cycles per minute, and maintains quiet operation. The non-magnetic, stainless steel contact tube is filled with pressurized gas to minimize arc erosion, lengthen the life of the contactor, and insure reliability.
Highly purified mercury prevents contact burning, pitting, or stocking, and provides a fresh, clean contact surface for each new closing, insuring millions of bounce free operations. The actuating coil is completely epoxy encapsulated, affording minimum power consumption, better heat conduction and complete moisture-proofing. Low internal resistance and heavy duty load terminals further insure cool operation. These contactors fit into most applications where a mechanical relay could be used. Mercury displacement contactors create less noise, last longer, and cycle faster than mechanical relays without the clatter of relay contacts. Other applications include high voltage, low current loads such as tungsten lamps.
Timing: Contact closing in approximately 0.05 seconds (50 ms) and opening in approximately 0.08 seconds (80 ms).
Temperature Range: -31 to 167°F (-35 to 75°C).
Life: Millions of cycles; Tungsten lamp - 10,000 minimum.
Dielectric Withstand: Minimum 2500 V RMS.
Coil Terminals: 30, 35, 60 & 100 Amp Units: #6 binding head screws.
Load Terminals: #6 binding head screws; 30 Amp. Pressure connectors; AWG #4-#14 leads for 35 Amp, AWG #2-#8 leads for 60 Amp, AWG #2-#21 leads for 100 Amp.
Contact Resistance: 30 Amp Units: .003 ohms typical; 35 Amp Units: .003 ohms typical; 60 Amp Units: .002 ohms typical; 100 Amp Units: .001 ohms typical.