Model: P28AA-1B

Pressure Switch

Properties:

Inside Diameter
0.250 inches all connections
Overall Length
5.297 inches
Overall Height
2.297 inches
Overall Width
5.656 inches
Mounting Slot Width
0.203 inches
Body Length
3.250 inches
Body Height
2.094 inches
Unthreaded Mounting Hole Diameter
0.203 inches
Longest Horizontal Distance Between Mounting Centers
4.984 inches
Longest Vertical Distance Between Mounting Centers
0.453 inches
Pressure Switch Type
Differential
Mounting Method
Base and unthreaded hole and slot
Features Provided
Electrical access port and manual reset button
Contact Action Stimulus
Increase
Mounting Facility Pattern
Two position diagonal
Nonpile-up Contact Arrangement
1 pole, single throw, both positions maintained
Terminal Type
Screw
Contact Load Current Rating
10.0 amperes resistive load first voltage
Contact Load Current Rating
5.0 amperes resistive load second voltage
Contact Adjustability
Actuation point adjustable
Contact Adjustment Range
+8.00/+70.00 actuation point pounds per square inch gage
Contact Adjustment Type
External actuation point pointer with scale
Contact Voltage Rating In Volts
120.0 ac at sea level first voltage
Contact Voltage Rating In Volts
240.0 ac at sea level second voltage
Pressure Connector Type
Swivel nut, flare, threaded internal all connections
Media For Which Designed
Gas or liquid
Style Designator
Rectangular
NSN
5930-01-173-4947
Part Number
P28AA-1B
Description
Switch,pressure
CAGE
92578

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 P28AA-1B NSN 5930-01-173-4947

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:
--
Paclk Weight:
2.5000lbs
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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