Honeywell - 1EN1-RBN135 HERMITICALLY SEALED LIMIT SWITCH, MICRO SWITCH, SPDT X 2, PLUNGER, FOR COMMERCIAL AND MIILITARY AIRCRAFT

Hermitically sealed limit switch, Micro Switch for Commercial and Military Aircraft

Honeywell 's military grade EN Series MICRO SWITCH limit switches are sleeve/bush-mounted and are designed, manufactured, and qualified to MIL-PRF-8805 standards. This incredibly robust, cyclindrical, stainless steel, hermitically sealed limit switch, has been designed for use with commercial and military aircraft, as well as commercial and military ground equipment. Providing the precise and reliable position indication of critical applications on aircraft and military systems.

Hermitically Sealed Limit Switch Applications

• Landing gear systems for commercial and military aircraft including helicopters
• WOW switch (Weight-on-Wheels) for landing gear
• Up-lock and down-lock sensing, Landing gear bay doors closed/locked
• External doors and hatches for commercial and military aircraft including helicopters
• Closed and locked indication for passenger entry/exit doors, cargo bay doors, and/or other doors or hatches (refuelling door, APU air inlet door)
• Military ground vehicles - Doors or hatches closed/locked or open
• Off-road construction equipment - Doors or panels present/closed/open, up-stop or down-stop limits

These military grade limit switches can operate in a wide temperature range from -54 °C to 125 °C [-65 °F to 257 °F] for sea level or high-altitude military or commercial applications. Designed with an all-metal drive train for consistent operating characteristics at high or low temperatures.

Other applications include off-road equipment where high-demand environments exist. The EN Series of switches have been proven to provide consistent, reliable operation of critical applications in harsh environments for over 65 years.

Sealed MIL SPec  Limit Switch Features

• Two single pole, double throw circuits – SPDT x 2
• Plunger actuator, built in ice scraper
• Cyclindrical desgin
• Hex nut, lock washer and keying washer
• Environmentally sealed military qualified limit switch series (MIL-PRF-8805)
• Housing & bushing material - 300 Series stainless steel
• Contact material - Silver alloy, gold plated, gold bifurcated
• Mechanical endurance 25,000 cycles min.
• Electrical endurance 25,000 cycles min. at rated load
• Dielectric strength (initial) 1000 V RMS; 500 µA max. leakage
• Insulation resistance (initial) 500 Vdc; 1000 Megohms min.
• Environmental sealing Symbol 4, resilient seal per MIL-PRF-8805
• Temperature range (std.) -54 °C to 85 °C [-65 °F to 185 °F]
• Temperature range (opt.) -54 °C to 125 °C [-65 °F to 257 °F]
• Shock Symbol M (100 g) per MIL-PRF-8805
• Vibration Symbol 1, 10 g peak (10 Hz to 500 Hz)
• Standards Design conforms to MIL-PRF-8805