Model: 121902MM

Rotary Switch

Properties:

Thread Class
2b single mounting facility
Hazardous Locations/environmental Protection
Explosion proof
Overall Length
2.750 inches
Overall Height
2.500 inches
Overall Width
2.312 inches
First Flat Length
0.750 inches single actuator
Shaft Diameter
0.250 inches single actuator
Shaft Length
1.000 inches single actuator
Individual Section Quantity
2
Knob Manufacturer Code
82121
End Application
Multi-hull 03950
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
1 each section front
Throw Quantity
3 each section rear
Mounting Facility Circle Radius
2.312 inches single mounting facility
Mounting Method
Bracket single mounting facility and threaded hole single mounting facility
Features Provided
Actuator knob
Thready Qty Per Inch (tpi)
24 single mounting facility
Thread Size
0.190 inches single mounting facility
Contact Voltage Rating In Volts
125.0 ac at sea level
Switch Actuator Momentary Position
Clockwise single actuator
Rotor Through Connection Quantity
1 each section
Mounting Facility Pattern
Four position circular single mounting facility
Switch Actuator Indexing Position Quantity
3 single actuator
Shaft Type
Round, flatted, threaded hole single actuator
Terminal Type
Tab w/screw
Contact Switching Action
Makes before breaks each section rear
Switch Actuator Positioning Increment
90.0 degrees single actuator
Switch Actuator Stop Device Type
Fixed stop single actuator
Contact Load Current Rating
10.0 amperes resistive load ac at sea level
Style Designator
Tap, circuit selector
Thread Series Designator
Unc single mounting facility
NSN
5930-01-089-0515
Part Number
121902MM
Description
Switch,rotary
CAGE
82121

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 121902MM NSN 5930-01-089-0515

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:
U
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: 8536509025
  • SITC: 77255
  • End Use: Electric apparatus
  • NAICS: 335931
  • USDA: 1

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

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