Mercury Lighting Contactor
Front door opening, non-metallic, Noryl® enclosure. Dimensions 7-7/8'' high, 8-5/8'' high including mounting bracket, 6'' wide, 3-9/16'' deep.
Models available with or without a locking-type photo control receptacle mounted to the top of the relay enclosure. Receptacle will accept all locking-type photocontrols that conform to applicable EEI-NEMA standards. (To order relay models with optional photo control, add suffix “P” to model number.)
||Single-pole, single-throw. Available with either Normally-Open or Normally-Closed switch contacts.
||Internal fuse located for easy access
||Extremely reliable mercury relay will operate dependably at 80% of it’s rated voltage. Its mercury element is hermetically sealed in an inert gas atmosphere. Cool operation with a maximum temperature rise 25° C over ambient on the outside surface of the enclosure. Silent operation with no distracting noise in work areas.
-40° to 150°
F (-40° to 65° C).
|A lightweight steel armature floats
on the pool of mercury. When the control circuit
coil is energized, its magnetic field pulls the
armature down into the mercury; the mercury level
rises to contact the stationary molybdenum electrode,
thus, energizing the load circuit.
|With the control circuit coil de-energized,
a heavy-weight steel armature is pulled by gravity
into the mercury pool, raising the mercury level
to contact the upper molybdenum electrode. When
the control is energized, the armature is pulled
upward out of the mercury. The mercury level falls
and breaks contact with the upper electrode, de-energizing
the load circuit.
||Oil resistant, color-coded lead lead wire with Class A 105û C insulation. Length: 18 inches or 457.2 mm. Color-coded: 10 AWG white, 8 AWG black, 8 AWG red. (Models without a receptacle have an additional yellow 10 AWG wire.)
Equipped with two highly reliable metal oxide varistors (MOV) for protection against line surges.