Model: 18578

Rotary Switch

Properties:

Thread Class
2a single mounting facility
Thread Length
0.245 inches single mounting facility and 0.255 inches single mounting facility
Overall Length
Between 3.058 inches and 3.068 inches
Overall Height
Between 2.307 inches and 2.317 inches
Overall Width
Between 1.964 inches and 1.974 inches
First Flat Length
0.245 inches 2nd actuator and 0.255 inches 2nd actuator
Flat Height
0.214 inches 2nd actuator and 0.224 inches 2nd actuator
Shaft Diameter
0.248 inches 2nd actuator and 0.250 inches 2nd actuator
Shaft Diameter
0.248 inches 1st actuator and 0.250 inches 1st actuator
Shaft Length
0.495 inches 1st actuator and 0.505 inches 1st actuator
Shaft Length
0.870 inches 2nd actuator and 0.880 inches 2nd actuator
Individual Section Quantity
4
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
1 each section front
Pole Quantity
1 2nd section rear
Pole Quantity
1 4th section rear
Throw Quantity
1 4th section rear
Throw Quantity
1 3rd section rear
Throw Quantity
18 3rd section front
Throw Quantity
19 4th section front
Throw Quantity
3 2nd section rear
Throw Quantity
8 1st section front
Throw Quantity
8 2nd section front
Mounting Method
Threaded bushing single mounting facility
Thread Size
0.375 inches single mounting facility
Contact Voltage Rating In Volts
110.0 ac at sea level
Contact Voltage Rating In Volts
28.0 dc at sea level
Switch Actuator Indexing Position Quantity
24 2nd actuator
Switch Actuator Indexing Position Quantity
9 1st actuator
Shaft Type
Round, flatted 2nd actuator
Shaft Type
Round, hollowed 1st actuator
Terminal Type
Tab, solder lug
Contact Switching Action
Makes before breaks 2nd section rear
Contact Switching Action
Makes before breaks 3rd section rear
Contact Switching Action
Makes before breaks 4th section rear
Contact Switching Action
Makes before breaks each section front
Switch Actuator Positioning Increment
15.0 degrees 1st actuator
Switch Actuator Positioning Increment
15.0 degrees 2nd actuator
Detent Rotational Torque Range
+40.000/+60.000 inch-ounces 2nd actuator
Detent Rotational Torque Range
+20.000/+35.000 inch-ounces 1st actuator
Switch Actuator Stop Device Type
Fixed stop 1st actuator
Contact Load Current Rating
0.5 amperes resistive load ac at sea level
Contact Load Current Rating
1.0 amperes resistive load dc at sea level
Precious Material And Location
Contacts and rotors silver
Precious Material
Silver
Style Designator
Circular wafer, bushing mount
Thread Series Designator
Unef single mounting facility
NSN
5930-00-658-3867
Part Number
18578
Description
Switch,rotary
CAGE
00781

A switch actuated by a definite angular rotation of the switch shaft about its axis. For items having rated actuation travel and pressure characteristics, see switch, sensitive. Excludes relay, rotary; switch, stepping; and switch, telephone (as modified).

Part 18578 NSN 5930-00-658-3867

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02134
FIIG:
A052B0
Concept No.:
1
App. Key:
A
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:
S
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:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536509020
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

Freight Class: Switches, rotary, rated at not over 5 a, for a voltage not exceeding 1,000 v

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