PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27401-30Relay,electromagnetic

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-01-158-3719 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-158-3719 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-158-3719. Primary manufacturer part number: MS27401-30.
Features
  • Relay,electromagnetic — FSC 5945
  • Environmental Protection: HERMETIC AND SHOCK RESISTANT AND VIBRATION RESISTANT
  • Mounting Slot Width: 0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY
  • Nominal Operating Current Rating and Type: 30.0 MILLIAMPERES AC SINGLE WINDING
  • Storage Type: GENERAL PURPOSE WAREHOUSE
  • Coil Quantity: 1
  • Time Delay: 0.02 SECONDS MAXIMUM FIXED OPERATE TIME
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-158-3719, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-01-158-3719
Primary Part NumberMS27401-30
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Environmental ProtectionHERMETIC AND SHOCK RESISTANT AND VIBRATION RESISTANT
Mounting Slot Width0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Nominal Operating Current Rating and Type30.0 MILLIAMPERES AC SINGLE WINDING
Storage TypeGENERAL PURPOSE WAREHOUSE
Coil Quantity1
Time Delay0.02 SECONDS MAXIMUM FIXED OPERATE TIME
Main Contact Load Current Rating at Maximum Rated Voltage8.0 AMPERES AC AND 8.0 AMPERES DC INDUCTIVE LOAD
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES AC AND 2.0 AMPERES DC LAMP LOAD
Frequency in Hertz50.0 MINIMUM AND 400.0 MAXIMUM
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Features ProvidedCOIL VOLTAGE SUPPRESSION AND POLARIZED
Arc Quenching MethodAIR
Winding Quantity1
Time Delay0.05 SECONDS MAXIMUM FIXED RELEASE TIME
Center to Center Distance Between Mounting Facilities Parallel to Length1.446 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Duty TypeCONTINUOUS
Main Contact Load Current Rating at Maximum Rated Voltage4.0 AMPERES AC AND 4.0 AMPERES DC MOTOR LOAD
Specification/standard Data96906-MS27401 GOVERNMENT STANDARD
Fragility FactorMODERATELY RUGGED
Precious Material and LocationTERMINAL SURFACES GOLD
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Test Data Document81349-MIL-R-6106 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.).
Precious MaterialGOLD
Cubic Measure1.285 CUBIC INCHES
Purpose for Which DesignedSPECIFIC
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5945-01-249-2725 INTERCHANGEABLE
Relay,electromagnetic
5945-01-308-2060 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
MS27401-30 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-6106 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5945PL0885489 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MIL-PRF-6106 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
ASC1541961 Asc Pty Ltd (AUS)
Related Parts
5945-01-249-2725INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-308-2060INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-01-158-3719?

NSN 5945-01-158-3719 is a Relay,electromagnetic, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-158-3719?

NSN 5945-01-158-3719 has 5 cross-referenced part numbers: MS27401-30 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-6106 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 5945PL0885489 (Jednolity Indeks Materialowy - Uniform Material Index), MIL-PRF-6106 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), ASC1541961 (Asc Pty Ltd).

What NSN replaces 5945-01-158-3719?

There are 2 known substitutes for 5945-01-158-3719: 5945-01-249-2725, 5945-01-308-2060. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27401-30?

Key specifications for MS27401-30: Environmental Protection: HERMETIC AND SHOCK RESISTANT AND VIBRATION RESISTANT; Mounting Slot Width: 0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY; Nominal Operating Current Rating and Type: 30.0 MILLIAMPERES AC SINGLE WINDING. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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