Model: HED20A20/400

Pressure Switch

Properties:

Inside Diameter
0.250 inches single connection
Overall Length
4.170 inches
Overall Height
5.630 inches
Body Height
4.920 inches
Unthreaded Mounting Hole Diameter
Between 0.280 inches and 0.430 inches
Longest Horizontal Distance Between Mounting Centers
3.540 inches
Longest Vertical Distance Between Mounting Centers
2.910 inches
Pressure Switch Type
Differential
Mounting Method
Unthreaded hole
Thready Qty Per Inch (tpi)
18 single pressure connection
Contact Action Stimulus
Increase
Proof Pressure
5600.00 pounds per square inch
Thread Size
0.250 inches single pressure connection
Mounting Facility Pattern
Two position diagonal
Terminal Type
Screw
Contact Load Current Rating
0.1 amperes resistive load fourth voltage
Contact Load Current Rating
0.2 amperes resistive load third voltage
Contact Load Current Rating
1.0 amperes resistive load second voltage
Contact Load Current Rating
10.0 amperes resistive load first voltage
Contact Adjustability
Actuation point adjustable, preset and deactuation point adjustable, preset
Contact Adjustment Range
+280.00/+5600.00 actuation point pounds per square inch and +370.00/+5600.00 deactuation point pounds per square inch
Contact Adjustment Type
External actuation point knob
Contact Stimulus Rating
280.00 actuation point pounds per square inch and 5600.00 actuation point pounds per square inch and 370.00 deactuation point pounds per square inch and 5600.00 deactuation point pounds per square inch
Contact Voltage Rating In Volts
125.0 dc at sea level third voltage
Contact Voltage Rating In Volts
25.0 dc at sea level second voltage
Contact Voltage Rating In Volts
250.0 dc at sea level fourth voltage
Contact Voltage Rating In Volts
460.0 ac at sea level first voltage
Pressure Connector Type
Gasket seal, threaded internal single connection
Media For Which Designed
Liquid
Style Designator
Rectangular
Thread Series Designator
Npt single pressure connection
NSN
5930-01-198-1552
Part Number
HED20A20/400
Description
Switch,pressure
CAGE
27005

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 HED20A20/400 NSN 5930-01-198-1552

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:
2.8000lbs
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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