PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27400-6URelay,electromagnetic

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-01-194-1540 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-194-1540 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-194-1540. Primary manufacturer part number: MS27400-6U.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 3 SLOTTED HOLE SINGLE MOUNTING FACILITY
  • Winding Quantity: 1
  • Main Contact Load Current Rating at Maximum Rated Voltage: 4.0 AMPERES AC AND 4.0 AMPERES DC MOTOR LOAD
  • Fragility Factor: MODERATELY RUGGED
  • Precious Material: GOLD
  • Mounting Slot Width: 0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Precious Material and Location: TERMINAL SURFACES GOLD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-194-1540, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-01-194-1540
Primary Part NumberMS27400-6U
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
Mounting Facility Type and Quantity3 SLOTTED HOLE SINGLE MOUNTING FACILITY
Winding Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage4.0 AMPERES AC AND 4.0 AMPERES DC MOTOR LOAD
Fragility FactorMODERATELY RUGGED
Precious MaterialGOLD
Mounting Slot Width0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Precious Material and LocationTERMINAL SURFACES GOLD
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Criticality Code JustificationFEAT
Specification/standard Data96906-MS27400 GOVERNMENT STANDARD
Nominal Operating Current Rating and Type120.0 MILLIAMPERES DC SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES AC AND 2.0 AMPERES DC LAMP LOAD
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.).
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Arc Quenching MethodAIR
Coil Quantity1
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Center to Center Distance Between Mounting Facilities Parallel to Width0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle1.396 INCHES MINIMUM AND 1.446 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Winding DC Resistance Rating290.0 OHMS NOMINAL SINGLE WINDING
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Time Delay0.015 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
Environmental ProtectionHERMETIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5945-01-091-9536 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
MS27400-6U 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
MIL-PRF-6106 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5945-01-091-9536INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-01-194-1540?

NSN 5945-01-194-1540 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 5945-01-194-1540?

NSN 5945-01-194-1540 has 3 cross-referenced part numbers: MS27400-6U (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), MIL-PRF-6106 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5945-01-194-1540?

There is 1 known substitute for 5945-01-194-1540: 5945-01-091-9536. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27400-6U?

Key specifications for MS27400-6U: Overall Length: 1.718 INCHES MAXIMUM IN; Mounting Facility Type and Quantity: 3 SLOTTED HOLE SINGLE MOUNTING FACILITY; Winding Quantity: 1; Main Contact Load Current Rating at Maximum Rated Voltage: 4.0 AMPERES AC AND 4.0 AMPERES DC MOTOR LOAD. 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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