Honeywell 700 Series Thermal Switches
High reliability space-qualified thermal switches
The pedigree of the 700 series has its roots at the start of the Space Age – this series is a purpose designed product to support manned and unmanned space applications. The oldest precursors to the current design are still functioning on Pioneer and Voyager and more than 25,000 700 series have been deployed to space since this series introduction in 1995.
With a facility that include clean rooms, cryogenic nitrogen lines, in house test engineering and equipment manufacture, processes capable of producing bimetallic mechanisms from -115° to 700°F to materials such as Inconel® X-750 header plate, phase change glass to metal seals and 304L cases our facility is well suited to Space needs. Rather than saying "this can't be done" we look at challenges as a way to grow our expertise.
The capabilities of our technology and time-tested productsare evolving with market demands. Most notably, the increasing use of higher voltage lithium-ion batteries leading to "buss" voltages greater than 28 VDC, and requests for lower temperature operation and ambient temperatures below -115°F and -184°F respectively.
The design is continuously qualifying (every sealing lot) and continuously improving.
De-rating is encouraged.
Our designs are ITAR controlled and portions are proprietary, but can be viewed here at the factory.
NASA Goddard Specifications.
Click here for S-311-641/03 as an additional resource. This is very useful tool for understanding the product and selecting the correct configuration for the application.
Series 700 specs include:
- High Reliability Thermal Switches
- 700 Series, ½" mechanism
- 5 ampere 28 VDC
- 1 ampere 120 VDC
Click here to receive assistance in creating “ordering codes”, temperature matching of primary and secondary temperatures, and useful information on application optimization.
| DOWNLOAD | DESCRIPTION |
| 700 Data Sheet | Contains configuration drawings and sample ordering codes for this product. [.pdf - requires Adobe Acrobat Reader] |
| 700 Thermal Switch High Reliability Inventory | Select and reserve off-the-shelf, space qualified thermostats [.xls - requires Microsoft Excel] |
| End Item Inventory of 700 Series thermal switches that are now available for immediate delivery! | Search this inventory for End Items that are currently in stock. [.xls - requires Microsoft Excel - under the 700 Series worksheet tab] Then Contact Us to place your order for immediate delivery. When ordering, provide the Part Number, Order Code and Quantity shown in the inventory. Credit card orders are accepted and will accelerate the delivery process. |
THERMAL SWITCHES exported from the United States must be done in accordance with the Export Administration Regulations (EAR) and/or the International Traffic in Arms Regulations (ITAR) as applicable.
