Hermetically Sealed Limit Switches 003126 HE Series Issue 1 Datasheet FEATURES Select HE catalog listings qualified or compliant to MIL-PRF-8805 Hermetic sealing per MIL-PRF-8805 symbol 5 and environmentally sealed Variety of integral actuators: pin plunger, roller plunger, adjustable roller plunger, ball bearing plunger, and rotary roller lever Electrical connection/termination: end or side exit wire leads, screw terminals, end or side exit connectors Circuitries from single-pole double-throw (SPDT) up to six-pole double-throw (6PDT) Silver contacts standard gold contacts optional for low energy DESCRIPTION electrical loads True hermetic sealing with metal-to-metal and glass-to-metal Wide temperature range: -55 C to 125 C -67 F to 257 F design and manufacturing processes assures the Honeywell MICRO SWITCH HE Series mechanical limit switches are POTENTIAL APPLICATIONS durable in severe environments. The hermetically sealed Cargo loading latch detection (pallet locked) HE Series limit switches are an effective solution for harsh Doors (open/closed position, locked status) applications where the atmospheric pressures and temperatures Evacuation slide door-lock mechanism exhibit significant variations such as in commercial and military Flight controls (flap/slat, spoilers) aircraft. With a 300 series stainless steel bushing and housing, Landing gear (uplock, downlock, and weight on wheels the HE limit switch is able to resist most severe environments (WOW)) with the environmental and hermetic sealing. Select HE Series Thrust reverser actuation system (TRAS) (stowed or deployed catalog listings are qualified to MIL-PRF-8805 standards. status) HE Series limit switches are designed with either a 5/8 inch or 15/32 inch diameter threaded bushing for panel mounted DIFFERENTIATION applications. Available with up to 6PDT switch option Rotary actuated roller lever option VALUE TO CUSTOMERS PORTFOLIO Honeywell HE Series hermetically sealed switches offer In addition to the HE hermetically sealed switches, Honeywell solutions for end-of-traval and precise position indication of offers a complete range of sealed switches for aircraft and critical applications on commercial/military aircraft and military military systems. The sealed switches include the EN Series, HM systems Series, HR Series, HS Series, SE Series, and XE Series. Sensing and Productivity SolutionsHermetically Sealed Limit Switches, HE Series Table 1. Specifications Characteristic Parameter Description Hermetically sealed limit switch Standards Designed to MIL-PRF-8805 requirements Housing & bushing material 300 Series stainless steel Contacts Silver alloy, gold plated, gold bifurcated Circuitry 1PDT to 6PDT Electrical rating Up to 7 A 28 Vdc reference page 2, table 2 Mechanical endurance 25,000 cycles min. Electrical endurance 25,000 cycles min. rated load Dielectric strength (initial) 1000 V RMS 500 A max. leakage Insulation resistance (initial) 500 Vdc 1000 Megohms min. Environmental sealing Symbol 5, hermetic seal per MIL-PRF-8805 Temperature range -55 C to 125 C -67 F to 257 F Shock Catalog listing specific, up to symbol M, 100 g per MIL-PRF-8805 Vibration Catalog listing specific, up to symbol 2, 10 to 2000 Hz, 15 g per MIL-PRF-8805 Table 2. Electrical Specifications Sea Level 28 Vdc Altitude 28 Vdc Rating Code Contact Material Resistive Inductive Motor Resistive Inductive Motor A Silver 5 3 4 5 3 4 Silver 7 4 4 B Gold 1 0.5 C Gold 0.5 0.25 0.5 0.25 D Gold 1 0.5 1 0.5 E Silver 7 4 4 7 4 4 F Silver 7 4 4 7 2.5 HE SERIES SWITCHES CIRCUITRY The HE Series hermetically sealed switch- 2PDT 4PDT es are designed with a threaded bushing for panel mount applications. The standard HE Series has a threaded bushing, 0.625 in 5/8 in diameter. The miniature HE Series and rotary actuated HE Series have a threaded bushing that measures 0.469 in 15/32 in diameter. HE Series switches generally feature elec- 6PDT trical termination as side-exit or end-exit wire leads, or terminal screws integral to the switch. Military-style connectors, inte- gral to the HE switch, are also available. 2 sensing.honeywell.com