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Pressure Switch

Model / MPN: 3978-1 | NSN: 5930-00-800-8492
ITAR Registered seal

A switch which is actuated by changes in pressure of any gas or liquid or by changes in a vacuum acting upon its sensing element. Excludes baroswitch; switch, pressure-thermostatic; and switch, sensitive.

Product Details
NATO Stock Number
5930-00-800-8492
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2b single pressure connection
Hazardous Locations/environmental Protection
Explosion proof
Overall Length
3.250 inches
Overall Height
3.000 inches
Overall Width
1.250 inches
Unthreaded Mounting Hole Diameter
0.210 inches
Distance Between Mounting Facility Centers
1.125 inches
Pressure Switch Type
Gage
Operating Tempurature Rating
Between -65.0 degrees fahrenheit and 180.0 degrees fahrenheit
Mounting Method
Base and unthreaded hole
Features Provided
Electrical access port
Contact Action Stimulus
Increase
Proof Pressure
7500.00 pounds per square inch
Thread Size
0.4375 inches single pressure connection
Mounting Facility Pattern
Two position in-line
Nonpile-up Contact Arrangement
4 pole, double throw, double break/double make, permanent jumper, one position momentary
Terminal Type
Connector, receptacle
Contact Load Current Rating
3.0 amperes resistive load first voltage and 3.0 amperes inductive load first voltage and 3.0 amperes motor load first voltage
Contact Load Current Rating
3.0 amperes resistive load second voltage and 3.0 amperes inductive load second voltage and 3.0 amperes motor load second voltage
Contact Load Current Rating
3.0 amperes resistive load third voltage and 3.0 amperes inductive load third voltage and 3.0 amperes motor load third voltage
Contact Adjustability
Deactuation point not adjustable and actuation point not adjustable
Contact Stimulus Rating
1800.00 actuation point pounds per square inch and 1500.00 deactuation point pounds per square inch and 300.00 differential point pounds per square inch
Contact Voltage Rating In Volts
115.0 ac at sea level second voltage
Contact Voltage Rating In Volts
200.0 ac at sea level first voltage
Contact Voltage Rating In Volts
28.0 dc at sea level third voltage
Pressure Connector Type
Plain, threaded internal single connection
Frequency In Hertz
400.0 first voltage
Frequency In Hertz
400.0 second voltage
Media For Which Designed
Liquid
Style Designator
Rectangular
Thread Series Designator
Unf single pressure connection
3978 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE7M815T3456 Switch, Pressure 32 EA 07/08/2015
SPE7M816T0126 Switch, Pressure 28 EA 10/19/2015
SPE7M817T1296 Switch, Pressure 29 EA 02/07/2017
SPE7M817T3814 Switch, Pressure 25 EA 09/11/2017
SPE7M818T1174 Switch, Pressure 24 EA 03/26/2018
SPE7M818T2248 Switch, Pressure 24 EA 08/06/2018
SPE7M818T3876 Switch, Pressure 19 EA 10/09/2018
SPE7M819T2086 Switch, Pressure 26 EA 01/22/2019
SPE7M819T4822 Switch, Pressure 31 EA 05/28/2019
SPE7M820T0481 Switch, Pressure 20 EA 11/04/2019
SPE7M820T1149 Switch, Pressure 23 EA 12/12/2019

Pricing and Availability

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3978-1 Cross Reference
  • 2-43927-1
  • 2-43927-1
  • 15133