Model: 1251

Pressure Switch

Properties:

Thread Class
3a single pressure connection
Thread Length
0.300 inches single pressure connection and 0.340 inches single pressure connection
Overall Length
3.180 inches
Outside Diameter
0.438 inches single connection
Body Length
1.750 inches
Overall Diameter
1.900 inches
Pressure Switch Type
Gage
Width Across Flats
0.688 inches
Operating Tempurature Rating
Between -65.0 degrees fahrenheit and 250.0 degrees fahrenheit
Mounting Method
Inlet connection
Features Provided
Electrical access port and internally grounded
Thready Qty Per Inch (tpi)
20 single pressure connection
Contact Action Stimulus
Increase
Proof Pressure
60.00 pounds per square inch
Thread Size
0.4375 inches single pressure connection
Nonpile-up Contact Arrangement
1 pole, double throw, one position momentary
Sensing Element Burst Pressure
100.00 pounds per square inch
Terminal Type
Connector, receptacle
Contact Load Current Rating
4.0 amperes resistive load single voltage and 2.5 amperes inductive load single voltage
Contact Adjustability
Deactuation point not adjustable and actuation point not adjustable
Contact Stimulus Rating
15.00 actuation point pounds per square inch gage and 6.00 deactuation point pounds per square inch gage and 9.00 differential point pounds per square inch gage
Contact Voltage Rating In Volts
28.0 dc at sea level single voltage
Pressure Connector Type
Flared, threaded external single connection
Media For Which Designed
Liquid
Style Designator
Cylindrical
Thread Series Designator
Unf single pressure connection
NSN
5930-00-959-2359
Part Number
1251
Description
Switch,pressure
CAGE
98505

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.

Part 1251 NSN 5930-00-959-2359

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00206
FIIG:
A048B0
Concept No.:
1
App. Key:
D
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
A
ESD:
ESD:
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
5.0 X 3.0 X 3.0
Paclk Weight:
4.4000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536509065
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, for a voltage not exceeding 1000 volts, nesoi

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