Model: 1638-0

Pressure Switch

Properties:

Overall Length
6.500 inches
Overall Diameter
7.750 inches
Longest Horizontal Distance Between Mounting Centers
2.000 inches
Longest Vertical Distance Between Mounting Centers
3.000 inches
Pressure Switch Type
Differential
Operating Tempurature Rating
Between 40.0 degrees fahrenheit and 125.0 degrees fahrenheit
Mounting Method
Bracket
Thready Qty Per Inch (tpi)
27 all pressure connection
Contact Action Stimulus
Increase
Proof Pressure
25.00 pounds per square inch
Thread Size
0.125 inches single pressure connection
Mounting Facility Pattern
Four position rectangular
Nonpile-up Contact Arrangement
1 pole, double throw, one position momentary
Terminal Type
Tab w/screw
Contact Load Current Rating
3.5 amperes resistive load first voltage
Contact Load Current Rating
7.0 amperes resistive load second voltage
Contact Adjustability
Actuation point adjustable
Contact Adjustment Range
+0.05/+0.25 actuation point inches of water
Contact Adjustment Type
External actuation point screw with scale
Contact Voltage Rating In Volts
120.0 ac at sea level second voltage
Contact Voltage Rating In Volts
240.0 ac at sea level first voltage
Media For Which Designed
Gas or liquid
Style Designator
Cylindrical
Thread Series Designator
Npt all pressure connection
NSN
5930-00-720-1481
Part Number
1638-0
Description
Switch,pressure
CAGE
85274

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 1638-0 NSN 5930-00-720-1481

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:
U
ESD:
ESD:
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
5.2000lbs
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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