Model: M28788/1-1

Pressure Switch

Properties:

Thread Class
3b all pressure connection
Thread Length
0.709 inches all pressure connection
Hazardous Locations/environmental Protection
Dustproof and explosion proof
Overall Length
Between 2.500 inches and 3.270 inches
Overall Height
3.910 inches
Overall Width
2.400 inches
Body Length
Between 2.500 inches and 3.270 inches
Pressure Switch Type
Differential
Operating Tempurature Rating
Between 32.0 degrees fahrenheit and 185.0 degrees fahrenheit
Mounting Method
Inlet connection and outlet connection
Features Provided
Hermetically sealed case
Thready Qty Per Inch (tpi)
18 all pressure connection
Contact Action Stimulus
Increase
Proof Pressure
150.00 pounds per square inch gage
Thread Size
0.563 inches single pressure connection
Nonpile-up Contact Arrangement
1 pole, double throw, one position momentary
Sensing Element Burst Pressure
300.00 pounds per square inch gage
Terminal Type
Connector, receptacle
Contact Load Current Rating
3.0 amperes inductive load single voltage
Contact Adjustability
Deactuation point not adjustable and actuation point not adjustable
Contact Stimulus Rating
0.85 actuation point gallons per minute and 0.60 deactuation point gallons per minute and 0.25 differential point gallons per minute
Contact Voltage Rating In Volts
28.0 dc at sea level single voltage
Pressure Connector Type
Plain, threaded internal all connections
Media For Which Designed
Liquid
Test Data Document
81349-mil-s-28788 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unf all pressure connection
Specification Data
81349-mil-s-28788/1 government specification
NSN
5930-01-123-4361
Part Number
M28788/1-1
Description
Switch,pressure
CAGE
81349

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 M28788/1-1 NSN 5930-01-123-4361

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:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
2.1000lbs
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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