Model: 21SN04-48

Pressure Switch

Properties:

Inside Diameter
0.560 inches single connection
Overall Length
3.200 inches
Outside Diameter
0.736 inches single connection
Overall Height
3.850 inches
Overall Width
3.200 inches
Body Diameter
1.780 inches
Unthreaded Mounting Hole Diameter
Between 0.266 inches and 0.274 inches
Longest Horizontal Distance Between Mounting Centers
Between 1.100 inches and 1.120 inches
Longest Vertical Distance Between Mounting Centers
Between 2.240 inches and 2.260 inches
Pressure Switch Type
Absolute
Mounting Method
Flange and unthreaded hole
Features Provided
Electrical box connector
Contact Action Stimulus
Decrease
Mounting Facility Pattern
Four position rectangular
Nonpile-up Contact Arrangement
1 pole, double throw, one position momentary
Terminal Type
Connector, receptacle
Contact Load Current Rating
3.0 amperes resistive load first voltage
Contact Load Current Rating
3.0 amperes resistive load second voltage
Contact Adjustability
Deactuation point not adjustable and actuation point not adjustable
Contact Stimulus Rating
4.00 differential point pounds per square inch gage
Contact Voltage Rating In Volts
115.0 ac at sea level first voltage
Contact Voltage Rating In Volts
28.0 dc at sea level second voltage
Pressure Connector Type
Grooved, unthreaded external single connection
Media For Which Designed
Liquid
Style Designator
Cylindrical w/lugs
NSN
5930-00-481-8189
Part Number
21SN04-48
Description
Switch,pressure
CAGE
02750

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 21SN04-48 NSN 5930-00-481-8189

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:
CRITL:
X

Packaging & Shipping

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