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Overview

The 3MS1 QPL Series is a single-pole, single-throw switch activated by a snap-action bimetal disc. It is qualified to MIL-PRF-24236, Type 1, Class 4, and is QPL listed for military applications. The case is laser welded to form a hermetically-sealed steel housing, with a glass-to-metal seal at the terminal junction. Temperature calibrations are pre-set at the factory and each unit is thermally and mechanically inspected. It is available to open or close on temperature rise. Available mounting brackets and terminal configurations are in accordance with the M-24236/1 Military Specification Sheet.

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
Precision Thermostats Datasheet -- 5MB
Thermostats Line Guide Product Line Guide English 444KB
Soldering Wire Leads on Precision Hermetic Thermostats Installation Instructions English 57KB
Aerospace and Defense Product Range Guide Product Range Guide English 3MB

Browse 3MS1 QPL Series Products

Product Functional Properties Operating Temperature Open Temperature Close Temperature
3MS1 00100130 Open on rise -46 °C to 191 °C [-50 °F to 375 °F] 46.1 °C [115 °F] 26.7 °C [80 °F]
3MS1 00113221 Close on rise -46 °C to 191 °C [-50 °F to 375 °F] 54.4 °C [130 °F] 71.1 °C [160 °F]
3MS1 00123146 Open on rise -46 °C to 191 °C [-50 °F to 375 °F] 1.7 °C [35 °F] -9.4 °C [15 °F]
3MS1 00140883 Close on rise -46 °C to 191 °C [-50 °F to 375 °F] 73.9 °C [165 °F] 90.6 °C [195 °F]
3MS1 00143157 Close on rise -46 °C to 191 °C [-50 °F to 375 °F] 46.1 °C [115 °F] -40.0 °C [-40 °F]
3MS1 00200935 Open on rise -46 °C to 191 °C [-50 °F to 375 °F] 100.0 °C [212 °F] 90.0 °C [194 °F]
3MS1 00213045 Open on rise -46 °C to 191 °C [-50 °F to 375 °F] 37.8 °C [100 °F] 26.7 °C [80 °F]
3MS1 00213241 Close on rise -46 °C to 191 °C [-50 °F to 375 °F] 4.4 °C [8 °F] max. diff. 73.9 °C [165 °F]
3MS1 00223052 Open on rise -46 °C to 191 °C [-50 °F to 375 °F] 32.2 °C [90 °F] 21.1 °C [70 °F]
3MS1 00243037 Open on rise -46 °C to 191 °C [-50 °F to 375 °F] 71.1 °C [160 °F] 62.8 °C [145 °F]