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Author Topic: Help to identify a Sensata thermal switch  (Read 524 times)

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Offline gkmaiaTopic starter

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Help to identify a Sensata thermal switch
« on: January 17, 2021, 06:13:42 am »
looking for some help to identify a thermostatic switch.

I got two to identify but the issue is I cannot make sense of the temperature  comparing the markings to the chart on the datasheet.

They are part of a spa pool heater. I would like to know the temperature rating so I can test if they are within spec.

One is a manual and the other is automatic. The numbers marked go as bellow.

1NT12L-2449 L50-MR 9937
1NT01L-2972 L51-12 9937

Datasheet bellow

https://www.sensata.com/sites/default/files/a/sensata-1nt%20series-fixed%20temperature%20thermostats-datasheet.pdf
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Offline fzabkar

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Re: Help to identify a Sensata thermal switch
« Reply #1 on: January 17, 2021, 07:21:14 pm »
ISTM that the temperature specs are buried within the "2449" and "2972" suffixes. I suspect that "9937" is a YYWW date code.
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Offline Niklas

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Re: Help to identify a Sensata thermal switch
« Reply #2 on: January 17, 2021, 11:24:31 pm »
50'C with manual reset and 51'C with -12'C (below 51'C) for automatic reset.
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