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Worldwide distributor of NSN parts and consumables located in the USA.

Rotary Switch

Model / MPN: 121-BB-3 | NSN: 5930-00-981-9347
ITAR Registered seal

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).

Product Details
NATO Stock Number
5930-00-981-9347
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2b single mounting facility
Overall Length
2.376 inches
Overall Height
1.375 inches
Overall Width
1.375 inches
Shaft Diameter
0.249 inches single actuator and 0.251 inches single actuator
Shaft Length
0.906 inches single actuator and 0.969 inches single actuator
Distance Between Mounting Facility Centers
1.000 inches single mounting facility
Individual Section Quantity
1
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
2 single section periphery
Throw Quantity
3 single section periphery
Mounting Method
Threaded hole single mounting facility
Thready Qty Per Inch (tpi)
32 single mounting facility
Thread Size
0.138 inches single mounting facility
Contact Voltage Rating In Volts
115.0 ac at sea level
Contact Voltage Rating In Volts
28.0 dc at sea level
Mounting Facility Pattern
Two position in-line single mounting facility
Switch Actuator Indexing Position Quantity
3 single actuator
Shaft Type
Round single actuator
Terminal Type
Turret
Contact Switching Action
Breaks before makes single section periphery
Switch Actuator Positioning Increment
30.0 degrees single actuator
Switch Actuator Stop Device Type
Fixed stop single actuator
Contact Load Current Rating
2.0 amperes resistive load ac at sea level
Contact Load Current Rating
2.0 amperes resistive load dc at sea level
Style Designator
Tap, square frame
Thread Series Designator
Unc single mounting facility

Pricing and Availability

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121-BB-3 Cross Reference
  • 121BB3