PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27401-6XRelay,electromagnetic

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5945-01-178-4234 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-178-4234 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-178-4234. Primary manufacturer part number: MS27401-6X.
Features
  • Relay,electromagnetic — FSC 5945
  • Coil Quantity: 1
  • Mounting Facility Type and Quantity: 2 SLOTTED HOLE SINGLE MOUNTING FACILITY
  • Nominal Operating Current Rating and Type: 110.0 MILLIAMPERES DC SINGLE WINDING
  • Main Contact Load Current Rating at Maximum Rated Voltage: 8.0 AMPERES AC AND 8.0 AMPERES DC INDUCTIVE LOAD
  • Duty Type: CONTINUOUS
  • Winding Quantity: 1
  • Precious Material: GOLD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-178-4234, 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 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-01-178-4234
Primary Part NumberMS27401-6X
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
StatusCANCELLED
Coil Quantity1
Mounting Facility Type and Quantity2 SLOTTED HOLE SINGLE MOUNTING FACILITY
Nominal Operating Current Rating and Type110.0 MILLIAMPERES DC SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage8.0 AMPERES AC AND 8.0 AMPERES DC INDUCTIVE LOAD
Duty TypeCONTINUOUS
Winding Quantity1
Precious MaterialGOLD
Precious Material and LocationTERMINAL SURFACES GOLD
Mounting Slot Width0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Fragility FactorMODERATELY RUGGED
Arc Quenching MethodAIR
Criticality Code JustificationFEAT
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Length1.446 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Environmental ProtectionHERMETIC
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Winding DC Resistance Rating320.0 OHMS NOMINAL SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Test Data Document81349--MIL-R-83536/9 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.).
Specification/standard Data96906--83536/9-024M GOVERNMENT STANDARD
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES AC AND 2.0 AMPERES DC LAMP LOAD
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Cubic Measure1.181 CUBIC INCHES
Storage TypeGENERAL PURPOSE WAREHOUSE
Purpose for Which DesignedSPECIFIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5945-00-878-9509 INTERCHANGEABLE
Relay,electromagnetic
5945-01-015-0354 INTERCHANGEABLE
Relay,electromagnetic
5945-01-096-3098 INTERCHANGEABLE
Relay,electromagnetic
5945-01-183-6703 INTERCHANGEABLE
Relay,electromagnetic
5945-01-229-9315 INTERCHANGEABLE
Relay,electromagnetic
5945-01-285-9883 INTERCHANGEABLE
Relay,electromagnetic
5945-01-407-1581 INTERCHANGEABLE
Relay,electromagnetic
5945-01-414-7681 INTERCHANGEABLE
Relay,electromagnetic
5945-01-435-2667 INTERCHANGEABLE
Relay,electromagnetic
5945-01-458-8867 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
MS27401-6X Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5945PL0183033 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MS27401 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
M83536/9-024L 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
MIL-R-6106F Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-83536/9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS27401-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27401-6M Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
M83536/9-024 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JD4A002 Leach International Corp Div Leach International Corporation (USA)
M83536/9-024M Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS27401-6U Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-83536/9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS27401-6P Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27401-14 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27401-2 Naval Sea Systems Command (USA)
Related Parts
5945-00-878-9509INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-015-0354INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-096-3098INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-183-6703INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-229-9315INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-285-9883INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-407-1581INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-414-7681INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-435-2667INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-458-8867INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-512-0813INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-605-7337INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-01-178-4234?

NSN 5945-01-178-4234 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: cancelled.

What are the part numbers for NSN 5945-01-178-4234?

NSN 5945-01-178-4234 has 17 cross-referenced part numbers: MS27401-6X (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 5945PL0183033 (Jednolity Indeks Materialowy - Uniform Material Index), MS27401 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), M83536/9-024L (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) and 12 more.

What NSN replaces 5945-01-178-4234?

There are 12 known substitutes for 5945-01-178-4234: 5945-00-878-9509, 5945-01-015-0354, 5945-01-096-3098 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27401-6X?

Key specifications for MS27401-6X: Coil Quantity: 1; Overall Height: 1.310 INCHES MAXIMUM IN; Mounting Facility Type and Quantity: 2 SLOTTED HOLE SINGLE MOUNTING FACILITY; Overall Width: 0.525 INCHES MAXIMUM IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-01-178-4234 still in active supply?

NSN 5945-01-178-4234 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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