The Evolution of the Honeywell Thermal Switch the Evolution of the Honeywell Thermal Switch

Thermal Switch Overview

The Evolution of the Honeywell Thermal Switch The Evolution of the Honeywell Thermal Switch

Industry Challenges Thermal Switch Benefits Dates of Significance The industry needs high quality switches ■■ Quality assurance via extensive individual ■■ 1947: United Control Corporation and specification qualification testing was created by four Boeing engineers for use in aircraft, space, military and ■■ Custom temperatures and configurations ■■ 1967: United Control Corporation industrial applications in order to provide was acquired by Sundstrand ■■ Factory product application and temperature control. administration support ■■ 1971: United Control Corporation name was changed to Sundstrand Honeywell’s Response Why Honeywell? Data Control; Cage Code 97896 ■■ Honeywell thermal switches provide ■■ 50+ years of thermal switch technology 1993: Sundstrand Data Control temperature control that is simple, reliable development and supply was acquired by Allied Signal; Cage Code 0YFP0 and requires no power. These are often the ■■ Aerospace customer support, production ■■ 2001: Allied Signal acquired Honeywell best solution for critical and demanding and quality infrastructure and changed its name to Honeywell applications. ■■ Proven in hundreds of demanding applications The concept of a “push-to-open” spring Honeywell supplies thermal switches ■■ Push-to-open design inherently robust is the basis of the Honeywell Aerospace qualified to MIL-PRF-24236 and S-311-641. to environments and failure modes single pole, single throw Thermal Switch These specifications demand individual design. Today, applications are in the switch testing as well as periodic in-depth, Our History thousands: Turboprops to jet engines, B52 full-life qualification testing. This level A thermal switch launched United Control to B2, Redstone to Delta IV, Gemini to the of rigor ensures each switch performs Corporation. Its first product, a windshield Space Shuttle, Viking to classified defense flawlessly across environments and time. temperature control thermal switch, satellites, Space Station to Mars Rovers. remains in production. However, thermal Thermal Switches Provide switch materials, processing and testing Find out More Temperature control for applications have changed with the times, so despite For more information about Honeywell’s needing reliable and precise temperature continuous supply and use over decades, Thermal Switches and Sensors, control including: today’s switches embody the best from visit thermalswitch.com or contact ■■ Air Transport, Regional and Business continuous improvement and technology us at ThermalSwitchesandSensors@ aircraft advancements. honeywell.com. ■■ Spacecraft, satellites, launch vehicles Thermal Sensor history begins with wire ■■ Helicopters wound nickel and/or copper alloys and ■■ Military vehicles advances to Thin Film Platinum Resistance Temperature Detectors.