PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27400-38XRelay,electromagnetic

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-01-261-0825 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-261-0825 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-261-0825. Primary manufacturer part number: MS27400-38X.
Features
  • Relay,electromagnetic — FSC 5945
  • Terminal Type and Quantity: 14 PIN ALL FUNCTIONS
  • Nonpile-Up Main Contact Arrangement: 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Criticality Code Justification: FEAT
  • Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 28.0 DC
  • Winding Quantity: 1
  • Main Contact Load Current Rating at Maximum Rated Voltage: 8.0 AMPERES AC AND 8.0 AMPERES DC INDUCTIVE LOAD
  • Main Contact Load Current Rating at Maximum Rated Voltage: 2.0 AMPERES AC AND 2.0 AMPERES DC LAMP LOAD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-261-0825, 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 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-01-261-0825
Primary Part NumberMS27400-38X
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
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Criticality Code JustificationFEAT
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Winding Quantity1
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
Center to Center Distance Between Mounting Facilities Parallel to Width0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Slot Width0.150 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
Mounting Facility Type and Quantity3 SLOTTED HOLE SINGLE MOUNTING FACILITY
Storage TypeGENERAL PURPOSE WAREHOUSE
Fragility FactorMODERATELY RUGGED
Coil Quantity1
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.).
Purpose for Which DesignedGENERAL
Nominal Operating Current Rating and Type120.0 MILLIAMPERES DC SINGLE WINDING
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Environmental ProtectionHERMETIC
Specification/standard Data96906-MS27400 GOVERNMENT STANDARD
Time Delay0.015 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME
Duty TypeCONTINUOUS
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Cubic Measure2.272 CUBIC INCHES
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5945-01-165-2926 INTERCHANGEABLE
Relay,electromagnetic
5945-01-225-8872 INTERCHANGEABLE
Relay,electromagnetic
5945-01-296-3496 INTERCHANGEABLE
Relay,electromagnetic
5945-01-407-7497 INTERCHANGEABLE
Relay,electromagnetic
5945-01-418-5652 INTERCHANGEABLE
Relay,electromagnetic
5945-01-438-0536 INTERCHANGEABLE
Relay,electromagnetic
5945-01-439-5038 INTERCHANGEABLE
Relay,electromagnetic
5945-01-466-3878 INTERCHANGEABLE
Relay,electromagnetic
5945-01-474-4331 INTERCHANGEABLE
Relay,electromagnetic
5945-01-486-0224 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
MS27400-38X Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-83536 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-83536 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M83536/16-020M Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-83536/16 Military Specifications Promulgated by Military Departments/agencies 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
MS27400-38U Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5945-01-165-2926INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-225-8872INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-296-3496INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-407-7497INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-418-5652INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-438-0536INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-439-5038INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-466-3878INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-474-4331INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-486-0224INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-493-2889INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-563-3901INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-01-261-0825?

NSN 5945-01-261-0825 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 5945-01-261-0825?

NSN 5945-01-261-0825 has 7 cross-referenced part numbers: MS27400-38X (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-83536 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-83536 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M83536/16-020M (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-83536/16 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 5945-01-261-0825?

There are 12 known substitutes for 5945-01-261-0825: 5945-01-165-2926, 5945-01-225-8872, 5945-01-296-3496 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27400-38X?

Key specifications for MS27400-38X: Overall Length: 1.718 INCHES MAXIMUM IN; Special Features: FAILURE RATE LEVEL 0.3 PERCENT; Terminal Type and Quantity: 14 PIN ALL FUNCTIONS; Nonpile-Up Main Contact Arrangement: 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY. 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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