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EA800 Series Heavy Duty Limit Switch
Heavy Duty
EA800 Series Limit Switch

The EA800 Series hazardous location limit switches operate reliably where gases, vapors, and dust are potential explosion hazards. The EA800 Series bodies are carefully engineered to resist corrosion. Approved spark-proof bronze, or aluminum housings can withstand internal and external gas explosions while maintaining the reliability of Cam Type SNAP-LOCK® Technology. This series is NEMA rated for hazardous locations.

With generous over travel and cycle life is in the millions, when operated at the rated current, voltage, and temperature, the EA800 Series heavy duty limit switch features flexibility of motion and clockwise and counter-clockwise. Standard switches have maximum ambient temperature ratings of 90°C continuous. Switches can also be specially ordered with either -40°C or +150°C capabilities.


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How to Select A Lever for Your Limit Switch

Operating levers link your NAMCO limit switch and the moving part of your application. Users must select levers separate from limit switches. It is important to choose an operating lever to suit the needs of your application. The video below provides a quick overview on selecting a lever and a highlight of NAMCO lever options.

Technical Data

  • Quick Make, Quick Break

  • Cam Type SNAP-LOCK® Technology

  • Standard Mounting Available

  • One normally open and one normally closed (1NO/1NC)
    Two normally open and two normally closed (2NO/2NC)
    Three normally open and three normally closed (3NO/3NC)

  • Form “Z” contact arrangement

  • Meets NEMA 1,4, 4X, 6, 6P, 7 (Class I, Groups C & D) and 9 (Class II, Groups E, F & G) requirements.

  • Contacts are made of silver alloy. Contact shifting mechanism is locked in position by the latches until switch lever is actuated.

  • Temperature Range: -20º C to +90º C

  • Operating lever is adjustable to any required position. Operating lever angles (CW or CCW) maximum degrees of trip travel, as well as total lever travel, are determined by the cam selected

  • Operating torques - Trip travel varies from 15 to 35 lb-in. depending on switch size and cam selected

  • Wiring space is ample for up to size 12 wire with easily accessible terminal screws

  • Many different options available including: maintained and neutral positions; high temperature (0º C to 150º C) components and lubricants; low temperature (-40º C to 90º C) components and lubricants; and belt mis-alignment

  • Weight:
    Bronze: 1NO/1NC - 12 lb. | 2NO/2NC - 16 lb. | 3NO/3NC - 19 lb.
    Aluminum: 1NO/1NC - 6 lb. | 2NO/2NC - 7 lb. | 3NO/3NC - 8 lb.

  • For Ordering Information, see EA800 Series Specification Sheet.

  • Please note, operating levers are sold separately.

Interested in the EA800 Series? Contact us today!