کلید و سوئیچ لیمیت‌سوییچ

Product Attributes

Introduction

The Honeywell HM Series sealed miniature basic switches are designed for use in various commercial aircraft and deep-space applications (high-altitude requirements). These miniature sealed switches are also suitable for a wide range of other applications, including land vehicles, marine environments, and other harsh industrial environments. The switch complies with MIL-PRF-8805. Select HM switches carry UL 508 certification for industrial or ground transportation applications. MICRO SWITCH™ HM sealed switches feature glass-to-metal and metal-to-metal sealing and have been used across numerous applications for over 50 years.

The sealed HM basic switches are ideal for demanding applications requiring Class 5 sealing, with an operating temperature range of -184°C to 260°C (-300°F to 500°F). The HM switches feature a stainless steel housing and sealed construction, making them suitable for environments with dust, water, other particulate contaminants, and corrosive gases.

HM basic switches offer versatility through bifurcated gold contacts for reliable control of low-energy loads (milliamps and millivolts), or silver contacts for switching power loads at 30 VDC or 115 VAC at 400 Hz. Electrical connection to the switch is made via individual wires or "through-hole" solder terminals, further enhancing the versatility of HM switches.

Features

• MICRO SWITCH™ HM switches feature a sealed design; select models meet MIL-PRF-8805 standards for demanding military or commercial applications such as aircraft, missiles, or ground vehicles.
• Select HM catalog products carry UL 508 certification for industrial and ground transportation applications.
• Miniature package size with minimal footprint on equipment.
• The HM series' Level 5 hermetic enclosure suits sea-level, high-altitude, or deep-space applications.
• MICRO SWITCH™ HM products offer silver contacts for power load circuit control or gold-plated contacts for logic-level circuit control.
• Auxiliary actuators extend switch versatility across additional applications.
• Suited for extreme temperature environments, with an operating temperature range of -184°C to 260°C (-300°F to 500°F) and stable operating point maintained throughout the specified temperature range.

Applications

• Detection of landing gear door closed and locked positions
• Sensing engine fuel valve positions
• Identification of external door and hatch closed and/or locked positions
• Other applications in commercial aircraft cabins, including waste management valve positions, galley (liquid and food) storage and locked positions, HVAC and oxygen valve positions
• Monitoring open, closed, or locked positions of valves, doors, or panels
• Identification of external door and hatch closed and/or locked positions
• Specific sensing applications within compartments
• Internal switching elements for pressure switches, temperature switches, and/or flow switches