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Technical Data Sheet
PartsTable / MRO / 1SR3A4
1SR3A4 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND SINGLE ACTUATOR, shaft_length: 0.234 INCHES NOMINAL SINGLE ACTUATOR IN, overall_width: 2.219 INCHES NOMINAL IN, pole_quantity: 1 EACH SECTION FRONT, terminal_type: TAB W/SCREW, overall_height: 2.406 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-259-7166, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 1SR3A4
NSN: 5930-00-259-7166
FSC: 5930
CAGE: 82121 — ELECTRO SWITCH CORP. DBA ELECTRO SWITCH CORP (USA)
SPECIFICATIONS
shaft_typeROUND SINGLE ACTUATOR
shaft_length0.234 INCHES NOMINAL SINGLE ACTUATOR IN
overall_width2.219 INCHES NOMINAL IN
pole_quantity1 EACH SECTION FRONT
terminal_typeTAB W/SCREW
overall_height2.406 INCHES NOMINAL IN
shaft_diameter0.218 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity2 EACH SECTION FRONT
mounting_methodBASE SINGLE MOUNTING FACILITY
contact_switching_actionBREAKS BEFORE MAKES EACH SECTION FRONT
mounting_facility_patternTWO POSITION IN-LINE SINGLE MOUNTING FACILITY
contact_load_current_rating10.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL
NSN5930-00-259-7166
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,ROTARY TITLE COMPONENT PN 1SR3A4 MFR SWITCH,ROTARY
KEY FEATURES
•
CONTACT VOLTAGE RATING IN VOLTS: 120.0 DC 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", "NOMINAL", ETC.).
•
SHAFT TYPE: ROUND SINGLE ACTUATOR
•
SWITCH CONTACT BASIC DESIGN: NONPILE-UP SYMMETRICAL
•
THROW QUANTITY: 2 EACH SECTION FRONT
•
SHAFT DIAMETER: 0.218 INCHES NOMINAL SINGLE ACTUATOR IN
TECHNICAL CHARACTERISTICS (FLIS)
CONTACT VOLTAGE RATING IN VOLTS120.0 DC AT SEA LEVEL
TEST DATA DOCUMENT81349-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", "NOMINAL", ETC.).
SHAFT TYPEROUND SINGLE ACTUATOR
OVERALL HEIGHT2.406 INCHES NOMINAL IN
SWITCH CONTACT BASIC DESIGNNONPILE-UP SYMMETRICAL
THROW QUANTITY2 EACH SECTION FRONT
SHAFT DIAMETER0.218 INCHES NOMINAL SINGLE ACTUATOR IN
CONTACT VOLTAGE RATING IN VOLTS125.0 AC AT SEA LEVEL
CONTACT LOAD CURRENT RATING10.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL
SHAFT LENGTH0.234 INCHES NOMINAL SINGLE ACTUATOR IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
MIL-S-15291/3Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-15291/3Interchangeable
interchangeable cross-reference
interchangeable
M15291/3-001Interchangeable
interchangeable cross-reference
interchangeable
9000S6202-74085REV1TYPE1SR2A4Interchangeable
interchangeable cross-reference
interchangeable
C10301AInterchangeable
interchangeable cross-reference
interchangeable
9000S6202-74085TY1SR2B4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1SR3A4?
1SR3A4 is a SWITCH,ROTARY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1SR3A4?
There are 24 known substitutes for 1SR3A4: MIL-S-15291/3, MIL-DTL-15291/3, M15291/3-001 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1SR3A4?
1SR3A4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-259-7166. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026