Micro Switches for Extreme Cold & Vacuum When a limit switch must operate at -184°C in liquid oxygen, maintain hermetic integrity under high vacuum, and survive repeated thermal cycling — standard industrial switches fail. Postek HK Series hermetically sealed micro switches are engineered and qualified for the most demanding cryogenic and vacuum applications. Cryogenic & Vacuum Applications ❄️ Liquid Gas Handling LOX / LIN / LHe valve position sensing Cryogenic pump limit detection Dewar fill-level interlock Transfer line disconnect sensing Why HK Series: Rated -184°C — verified for liquid oxygen service. Welded metal shell eliminates differential thermal contraction failures common in plastic-sealed switches. ...
Micro Switches for Harsh Industrial Environments Industrial automation in chemical processing, food production, cryogenic storage, and vacuum systems demands switching components that withstand extreme temperatures, corrosive atmospheres, and washdown procedures. Postek HK Series hermetically sealed micro switches are purpose-built for these environments. Industrial Applications 🧪 Chemical & Process Industries Valve position feedback in corrosive atmospheres Reactor vessel interlock systems Explosion-proof enclosure limit detection Pump dry-run protection switches Why HK Series: All-welded metal shell eliminates organic seals that degrade under chemical exposure. 96-hour salt spray rating. No internal contamination path. ...
Micro Switches for Unmanned Aerial Systems Modern UAV platforms — from small multi-rotor inspection drones to large fixed-wing logistics aircraft — demand switching components that combine miniature size, environmental sealing, and absolute reliability. Postek HK Series hermetically sealed micro switches deliver mission-critical performance in the most demanding unmanned applications. UAV Applications 🎯 Payload Release Mechanisms Precision agriculture sprayer activation Package delivery drop mechanisms Sensor pod jettison systems Life raft / emergency beacon deployment Why HK Series: Snap-action mechanism ensures positive, repeatable switching with every actuation. 100,000 cycle electrical life supports high-frequency delivery operations. SPDT configuration enables both N.O. and N.C. monitoring. ...
Round Micro Switches for Space-Constrained Applications When every millimeter counts — and hermetic integrity cannot be compromised — round-format miniature micro switches deliver full high-reliability industrial-grade sealing in a Φ11mm envelope. Postek KWQMY1-0Z Series. 🛰️ orbital Subsystems Antenna deployment sensingSolar panel latch detectionPropellant valve feedback Round body installs where rectangular switches cannot fit. Space-grade hermetic seal. 🔬 Medical Devices Surgical robot limit detectionSterilizable equipment interlocksImaging system position feedback Hermetic seal withstands autoclave sterilization. No contamination path. ...
Screw-Clamp Switches for Extreme Conditions When wire-lead or solder-lug connections fail under sustained vibration, thermal cycling, or radiation exposure — screw-clamp terminals provide a mechanically secure, maintainable alternative. Postek KWQM5-2-28 Series. ⚛️ Energy Facilities Hot cell manipulator limitsReactor auxiliary systemsWaste handling interlocks Screw-clamp terminal survives radiation where solder degrades. Hermetic seal prevents contamination. 🧪 Chemical Processing Corrosive atmosphere valve sensingReactor vessel interlocksPipeline pig detection All-welded metal shell resists chemical attack. Screw terminals enable field replacement without soldering. ...
Hermetically Sealed Micro Switches for Mission-Critical Applications When a circuit must switch reliably at -184°C, withstand 100 g shock loads, and operate flawlessly after total ionizing radiation exposure of 100 Krad — only a hermetically sealed micro switch can meet the specification. Postek HK Series hermetically sealed micro switches are designed and qualified for the most demanding aerospace, mission-critical, and industrial environments where failure is not an option. Applications 🛰️ high-altitude platform & orbital Systems Solar array deployment mechanisms Thruster valve position sensing Antenna positioning limit switches Pyrotechnic initiation circuits Why HK Series: Space Grade (YHYB S1201/001-2013) and CAST Grade (CASTPS04/026-2018) qualification. Radiation hardness 100 Krad (Si) ensures reliable operation in LEO, MEO, and GEO environments. ...
Solutions for Unmanned Aerial Vehicles 🚁 Recommended Product: HK-KWQM4-4Z — IP68 Waterproof Drone Connector Why Our Drone Connectors IP68 Rating — full sealing for prolonged immersion and chemical exposure Aviation Lock — prevents accidental disconnection under 10G vibration -40°C Operation — retains elasticity and conductivity at extreme low temperatures Lightweight — PA66 housing is 60% lighter than metal alternatives Applications Scenario Requirement Postek Solution Ag Spraying IP68, chemical resistance HK-KWQM4-4Z · PA66 UL94-V0 BVLOS Logistics 5000+ cycles Gold-plated contacts Surveying Anti-vibration 50N aviation lock Request Quote → ...
Solutions for Electric Vehicles ⚡ Recommended Product: HK-KWQMY1-0Z — High-Current Automotive Connector Why Our EV Connectors IATF 16949 Certified — fully compliant with automotive quality standards 50A Continuous — stable power delivery at 85°C ambient 125°C Thermal Rating — operates in engine compartments without degradation 10G Vibration Rated — IEC 60068-2-6 certified Applications Scenario Requirement Postek Solution BMS Anti-EMI, signal Gold-plated contacts 48V DC-DC 50A, -40°~125°C HK-KWQMY1-0Z copper + gold Charging Stations IP67 Sealed housing Request Quote → ...
Solutions for Industrial Automation ⚙️ Recommended Product: HK-KWQM4-4Z — M12 Industrial Sensor Connector Why Our Industrial Connectors IP69K — high-pressure washdown protection (80°C / 100 bar) 316L Stainless Steel — acid and alkali corrosion resistance A-Code Standard — compatible with Siemens, Beckhoff, Balluff 200+ hours salt fog — for offshore and chemical environments Applications Scenario Requirement Postek Solution Food Processing CIP washdown, IP69K HK-KWQM4-4Z · 316L stainless Chemical Plants Acid resistance FKM seals Weather Stations All-weather IP69K + stainless Request Quote → ...