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

Rotary Switch

Model / MPN: C138-3 | NSN: 5930-00-485-5811
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
5930-00-485-5811
Sold in multiples of
DEMIL
NO
Thread Class
2a single mounting facility
Thread Length
0.469 inches single mounting facility
Hazardous Locations/environmental Protection
Explosion proof
Overall Length
2.750 inches
First Flat Length
0.468 inches single actuator
Flat Height
0.216 inches single actuator
Shaft Diameter
0.247 inches single actuator
Shaft Length
1.000 inches single actuator
Overall Diameter
2.000 inches
Individual Section Quantity
6
Nonturn Device Type
Slotted bushing at 12: 00 o'clock
Switch Contact Basic Design
Nonpile-up symmetrical
Pole Quantity
1 each section rear
Throw Quantity
18 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
28.0 dc at sea level
Shaft Flat/slot Angular Location
0.0 degrees from contact position 1 single actuator
Switch Actuator Indexing Position Quantity
18 single actuator
Shaft Type
Round, flatted single actuator
Terminal Type
Tab, solder lug
Contact Switching Action
Breaks before makes 3rd section front
Contact Switching Action
Breaks before makes 4th section front
Contact Switching Action
Breaks before makes 5th section front
Contact Switching Action
Breaks before makes 6th section front
Contact Switching Action
Breaks before makes 2nd section front
Contact Switching Action
Makes before breaks 1st section front
Switch Actuator Positioning Increment
20.0 degrees single actuator
Contact Load Current Rating
3.0 amperes resistive load dc at sea level and 2.0 amperes inductive load dc at sea level and 2.0 amperes lamp load dc at sea level
Style Designator
Tap, circular, bushing mount
Thread Series Designator
Uns single mounting facility

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C138-3 Cross Reference
  • 12-1915-1