Model: 3AT78-2A

Sensitive Switch

Special Features:

Weapon system essential

Properties:

Body Style
Hole mounted
Overall Length
1.380 inches
Center To Center Distance Between Mounting Facilities Parallel To Length
1.000 inches
Overall Height
1.237 inches
Overall Width
0.390 inches
Body Length
1.380 inches
Body Width
0.390 inches
Body Height
0.805 inches
Case Material
Metal
Unthreaded Mounting Hole Diameter
0.142 inches
Actuator Length
0.370 inches
Actuator Style
Roller arm
Actuator Free Position Height
0.687 inches
Actuator Roller Diameter
0.211 inches
Actuator Roller Width
0.156 inches
Maximum Voltage Rating In Volts
28.0 dc
End Application
Aircraft, eagle f-15
Inclosure Type
Fully enclosed
Mounting Method
Unthreaded hole
Features Provided
Actuator seal
Nonpile-up Contact Arrangement
1 pole, double throw, one position momentary single switch unit
Switch Release Force
12.0 ounces
Criticality Code Justification
Feat
Switch Actuating Force
48.0 ounces
Actuator Movement
Between 0.040 pretravel inches and 0.075 overtravel inches and 0.030 differential inches
Contact Load Current Rating At Maximum Rated Voltage
2.000 amperes resistive dc and 1.000 amperes inductive dc and 1.000 amperes lamp dc
Terminal Type And Quantity
3 wire lead
NSN
5930-00-548-1821
Part Number
3AT78-2A
Description
Switch,sensitive
CAGE
82647

A switch with a quick-acting mechanism actuated by a highly delicate tactile contact. Includes membrane switch. excludes switch, flexible; switch, pressure; and switch, thermostatic.

Part 3AT78-2A NSN 5930-00-548-1821

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00399
FIIG:
A053A0
Concept No.:
App. Key:
S
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:
Y

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536509050
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, slide, for a voltage not exceeding 1,000 v

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