Model: 312-990122-221

Code Indicating Wheel Switch

Properties:

Hazardous Locations/environmental Protection
Explosion proof and moisture resistant
Overall Length
1.760 inches
Overall Height
1.780 inches
Overall Width
1.150 inches
Unthreaded Mounting Hole Diameter
0.100 inches single mounting facility
Individual Section Quantity
2
Longest Horizontal Distance Between Mounting Centers
1.590 inches single mounting facility
Longest Vertical Distance Between Mounting Centers
0.900 inches single mounting facility
Operating Tempurature Range
-65.0/+85.0 degrees celsius
Mounting Method
Bracket single mounting facility and unthreaded hole single mounting facility
Actuator Type
Thumbwheel all actuators
Contact Voltage Rating In Volts
28.0 dc at sea level
Mounting Facility Pattern
Four position rectangular single mounting facility
Switch Actuator Indexing Position Quantity
10 all actuators
Terminal Type
Printed circuit
Contact Load Current Rating
125.0 milliamperes resistive load dc at sea level
Readout Indicator Marking
0, 1, 2, 3, 4, 5, 6, 7, 8, 9 each section
Contact Arrangement Truth Table
Bcd, 1 pole - 10 positions each section
Color
Black each indicator background
Color
White each indicator marking
Style Designator
Rectangular inline indicating
Test Data Document
81349-mil-s-22710 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.).
Specification Data
81349-mil-s-22710/15 government specification
NSN
5930-01-013-7788
Part Number
312-990122-221
Description
Switch,code Indicating Wheel
CAGE
38753

A switch which is externally actuated by a thumbwheel and/or pushbutton. A legend or message is visually displayed at each position of the indicating wheel which corresponds to electrically coded output. Electrically coded output is achieved by rotating a set of brush contacts permanently attached to the code indicating wheel, against a stationary commutator which is usually a printed wiring board having electrical pads or contacts which are interconnected by the rotating brush contacts. May have additional electrical components (such as resistors, capacitors, diodes) premounted on that portion of printed wiring board which extends beyond the back of switch housing.

Part 312-990122-221 NSN 5930-01-013-7788

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
62415
FIIG:
A052B0
Concept No.:
1
App. Key:
C
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:
X

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:
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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