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

Rotary Switch

Model / MPN: 20SR3B4 | NSN: 5930-00-548-7944
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
5930-00-548-7944
Sold in multiples of
1 EA
DEMIL
NO
Hazardous Locations/environmental Protection
Dustproof
Overall Height
9.500 inches
Overall Width
6.750 inches
Shaft Diameter
0.625 inches single actuator
Shaft Length
0.625 inches single actuator
Unthreaded Mounting Hole Diameter
0.500 inches single mounting facility
Individual Section Quantity
6
Longest Horizontal Distance Between Mounting Centers
8.000 inches single mounting facility
Longest Vertical Distance Between Mounting Centers
3.250 inches single mounting facility
Switch Contact Basic Design
Nonpile-up symmetrical
Mounting Method
Base single mounting facility
Features Provided
Metallic inclosure
Contact Voltage Rating In Volts
250.0 dc at sea level
Contact Voltage Rating In Volts
500.0 ac at sea level
Mounting Facility Pattern
Four position rectangular single mounting facility
Switch Actuator Indexing Position Quantity
4 single actuator
Shaft Type
Round single actuator
Terminal Type
Tab w/screw
Contact Switching Action
Breaks before makes each section front
Switch Actuator Positioning Increment
90.0 degrees single actuator
Contact Load Current Rating
200.0 amperes resistive load dc at sea level
Contact Load Current Rating
200.0 amperes resistive load ac at sea level
Test Data Document
81349-mil-s-15291 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.).
Nondefinitive Specification/std Data
20sr class

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20SR3B4 Cross Reference
  • MILS15291
  • 3673-26PC12
  • 20SR3B4
  • 9000S6202-74224