Completely fabricated from noncorrosive materials, the EA780 Series and EA790 Series Heavy Duty Limit Switch has a bronze housing and high quality stainless steel shaft completely protect against external damage to the switch from salt spray or other corrosive elements. Built for navy marine requirements, these series are sealed against leakage, which is achieved through the use of high quality gaskets on machined surfaces and “o”-Ring protection, plus close tolerance between the shaft and bushing.
These navy marine rated limit switch series have all internal components are of high grade stainless steel or copper alloy (chrome plated when required), to protect against bearing surface wear and to provide millions of operations.
Both the EA780 and EA790 series switches have heavy duty electrical contacts. The EA780 switches have sliding, double break type contacts built to meet the high shock requirements outlined in MIL-S-901. EA790 switches have heavy duty, double break butt type contacts.
These limit switches are available in many contact arrangements (1NO/1NC, 2NO/2NC, 2NO, 2NC, 4NO and 4NC). The Standard B1 cam provides for clockwise or counter-clockwise operations; B2 cam for operation in both directions (clockwise & counter-clockwise) or Maintained is also available. Contacts wipe clean with each operation.
Qualifications
Conforms to MIL-C-2212F
Meets Vibration Requirements MIL-STD-167B, Type I
Meets Hi-Shock Requirements of MIL-S-901, Grade A, Class I, Type A
Watertight (3 ft. for 60 min.) & Submersible (15 ft. for 30 min.) per MIL-STD-108E