Model: MS21994-1

Rotary Switch

Properties:

Thread Class
2a single mounting facility
Thread Length
0.469 inches single mounting facility
Hazardous Locations/environmental Protection
Dustproof and explosion proof
Overall Length
2.897 inches
First Flat Length
0.400 inches single actuator and 0.447 inches single actuator
Flat Height
0.216 inches single actuator
Shaft Diameter
0.247 inches single actuator
Shaft Length
0.531 inches single actuator
Overall Diameter
1.950 inches
Individual Section Quantity
2
Nonturn Device Type
Slotted bushing at 12: 00 o'clock
Operating Tempurature Range
-55.0/+85.0 degrees celsius
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
1 each section front
Throw Quantity
3 each section front
Mounting Method
Threaded bushing single mounting facility
Thready Qty Per Inch (tpi)
32 single mounting facility
Thread Size
0.469 inches single mounting facility
Contact Voltage Rating In Volts
115.0 lowest ac voltage rating at sea level
Contact Voltage Rating In Volts
200.0 highest ac voltage rating at sea level
Shaft Flat/slot Angular Location
90.0 degrees from nonturn device single actuator
Switch Actuator Indexing Position Quantity
4 single actuator
Shaft Type
Round, flatted single actuator
Terminal Type
Tab w/screw
Contact Switching Action
Makes before breaks each section front
Switch Actuator Positioning Increment
45.0 degrees single actuator
Detent Rotational Torque Range
+0.500/+6.000 inch-pounds single actuator
Switch Actuator Stop Device Type
Fixed stop single actuator
Contact Load Current Rating
5.0 amperes resistive load ac at sea level
Precious Material And Location
Contacts and terminal surfaces silver
Precious Material
Silver
Style Designator
Tap, circular, bushing mount
Test Data Document
81349-mil-s-6807 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
Uns single mounting facility
Specification Data
96906-ms21994 government standard
NSN
5930-00-481-1893
Part Number
MS21994-1
Description
Switch,rotary
CAGE
81349

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 MS21994-1 NSN 5930-00-481-1893

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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