PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

KD4A002Relay,electromagnetic

Leach Corp Relay Div · NSN 5945-00-878-8522 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-878-8522 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-878-8522. Primary manufacturer part number: KD4A002.
Features
  • Relay,electromagnetic — FSC 5945
  • Terminal Type and Quantity: 14 PIN ALL FUNCTIONS
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 3 SLOTTED HOLE SINGLE MOUNTING FACILITY
  • Winding DC Resistance Rating: 290.0 OHMS NOMINAL SINGLE WINDING
  • Nonpile-Up Main Contact Arrangement: 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Coil Quantity: 1
  • Specification/standard Data: 96906-MS27400 GOVERNMENT STANDARD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-878-8522, 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 Leach Corp Relay Div. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 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
NSN5945-00-878-8522
Primary Part NumberKD4A002
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerLeach Corp Relay Div
StatusACTIVE
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Center to Center Distance Between Mounting Facilities Parallel to Width0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity3 SLOTTED HOLE SINGLE MOUNTING FACILITY
Winding DC Resistance Rating290.0 OHMS NOMINAL SINGLE WINDING
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Coil Quantity1
Specification/standard Data96906-MS27400 GOVERNMENT STANDARD
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Winding Quantity1
Environmental ProtectionHERMETIC
Features ProvidedPOLARIZED
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Duty TypeCONTINUOUS
Precious Material and LocationTERMINAL SURFACE GOLD
Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle1.421 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
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
Mounting Slot Width0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Precious MaterialGOLD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5945-01-091-9536 INTERCHANGEABLE
Relay,electromagnetic
5945-01-698-4819 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
KD4A002 Leach Corp Relay Div (USA)
E410-1002 Dri Relays Inc. Dba Dri Relays Inc (USA)
KD4A Leach Corp Relay Div (USA)
974-0574-020 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MS27400-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
BR30S12 Microsemi Corp.-Power Management Group (USA)
E410-1263 Dri Relays Inc. Dba Dri Relays Inc (USA)
53-252-007 L3harris Interstate Electronics Corporation (USA)
Related Parts
5945-01-091-9536INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-698-4819INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-00-878-8522?

NSN 5945-00-878-8522 is a Relay,electromagnetic, manufactured by Leach Corp Relay Div, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-878-8522?

NSN 5945-00-878-8522 has 8 cross-referenced part numbers: KD4A002 (Leach Corp Relay Div), E410-1002 (Dri Relays Inc. Dba Dri Relays Inc), KD4A (Leach Corp Relay Div), 974-0574-020 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), MS27400-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 5945-00-878-8522?

There are 2 known substitutes for 5945-00-878-8522: 5945-01-091-9536, 5945-01-698-4819. Verify interchangeability with system specifications before substitution.

What are the specifications of KD4A002?

Key specifications for KD4A002: Terminal Type and Quantity: 14 PIN ALL FUNCTIONS; Overall Length: 1.718 INCHES MAXIMUM IN; Center to Center Distance Between Mounting Facilities Parallel to Width: 0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Mounting Facility Type and Quantity: 3 SLOTTED HOLE SINGLE MOUNTING FACILITY. 23 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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