Technical Articles

EMC Expands Series 644 to 4PDT

6/21/2005

Electro-Mech Components, Inc. introduces a new compactly designed, multi-function/multi-image lighted pushbutton switch, offering an immediate solution for space-conscious display installations on instrumentation and control panels where designers must provide greater system feedback and control functions to the operator while available panel space continues to shrink.  Applications considered ideal for this new unit include aircraft, avionics, simulation systems and uses where panel space is severely limited. 

Offering dual and quad lighted displays in a versatile range of SPST to 4PDT switch functions, the 644-2100 Series unit can be singly used in place of up to four individual switches, thereby reducing panel mounting requirements by up to 75%. Available in a variety of different lens cap, legend and filter materials, the unit is capable of display configurations in split, quadrant or full segments, and can provide both continuous visible legends and hidden legends that become visible when switch functions are activated. Press-on secure lens caps are available in a variety of materials to also provide exacting front panel installations, important to ergonomics, safety and appearance.

The 644-2100 installs from the front of the panel and attaches via a mounting sleeve that retains the switch housing, fitting into an industry-standard 0.698” square hole. With easy lamp or LED replacement from the front, the unit accepts both T-1 (3mm) sub-midget flange-based lamps and LEDs, offering maximum brightness and redundancy. Switch action is available in momentary, momentary snap-feel, or alternate action.

Performance specifications for the 644-2100 Series lighted pushbutton switches are led by an extended life capability of 100,000 minimum actuations. Ratings are 2.0A resistive, 0.5A inductive, with operating pressure of 2 lbs. ± 1 lb (909g ± 454g), plunger travel 0.187 inches nominal (4.7mm). Lamp circuits are independent. Switch contacts are silver plated (gold plating optional). Interconnect is provided with standard EMC solder lugs and accept 20AWG wiring (PC pin terminals are available). The switch housing requires less than 3.0 inches behind display panel. The unit is designed to meet applicable military and stringent commercial standards, including seal, moisture resistance, vibration, temperature, shock and environmental requirements, and is rated to IP64 protection standards.

“The 644-2100 introduces a true alternative to the designer seeking optimal performance and space-savings in a multi-function switch that will answer a wide number of applications”, stated Terry Trumbull, Vice President. “Our core customers have eagerly responded to this format anticipating significant savings in unit costs and panel space.”

Series 644-2100-4PDT data sheet.pdf