PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A3809Relay,electromagnetic

Northrop Grumman Corp Precision Products Plant · NSN 5945-00-850-7101 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-850-7101 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-850-7101. Primary manufacturer part number: A3809.
Features
  • Relay,electromagnetic — FSC 5945
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Frequency in Hertz: 60.0 NOMINAL
  • Terminal Type and Quantity: 5 PIN ALL FUNCTIONS
  • Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY
  • Duty Type: CONTINUOUS
  • Winding Quantity: 1
  • Nominal Operating Current Rating and Type: 750.0 MILLIAMPERES AC SINGLE WINDING
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-850-7101, 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 Northrop Grumman Corp Precision Products Plant. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-850-7101
Primary Part NumberA3809
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Corp Precision Products Plant
StatusCANCELLED
Center to Center Distance Between Mounting Facilities Parallel to Length1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Frequency in Hertz60.0 NOMINAL
Terminal Type and Quantity5 PIN ALL FUNCTIONS
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Winding Quantity1
Nominal Operating Current Rating and Type750.0 MILLIAMPERES AC SINGLE WINDING
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts28.0 DC
Mounting Facility Type and Quantity2 THREADED STUD(S) SINGLE MOUNTING FACILITY
Environmental ProtectionHERMETIC
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Winding DC Resistance Rating5.0 KILOHMS NOMINAL SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage5.0 AMPERES DC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp120.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Nonpile-Up Main Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Coil Quantity1
Thread Class2A SINGLE MOUNTING FACILITY A
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5310-00-065-4512A380-9 INTERCHANGEABLE
Washer,key
Seastrom Manufacturing Co Inc
4130-00-119-1266 INTERCHANGEABLE
Chiller,water,refrigerating
5940-00-171-02450165PC8 INTERCHANGEABLE
Terminal Board
Lockheed Martin Corporation Div Rms - Mitchel Field
5360-00-314-7168E3213-2PC3809 INTERCHANGEABLE
Spring,helical,compression
King Engineering Corporation Dba King-Gage Systems
4310-00-423-1517772719C91 INTERCHANGEABLE
Ring,valve
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
3030-00-896-0542B80 INTERCHANGEABLE
Belt,v
Emerson Electric Co Browning Mfg Div
5950-01-198-69303809 INTERCHANGEABLE
Transformer,power
Sartron, Inc
Cross-Reference Index
Part NumberManufacturer
A3809 Northrop Grumman Corp Precision Products Plant (USA)
54B7154H02 Westinghouse Electric Corp (USA)
3809 Northrop Grumman Corp Precision Products Plant (USA)
9975811 Us Army Aviation and Missile Command (USA)
41RJZ5000ACGSIL Sigma Instruments Inc (USA)
54B7154H02 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
41RJZ5000ACGBSL Sigma Instruments Inc (USA)
Related Parts
5310-00-065-4512INTERCHANGEABLE
WASHER,KEY
A380-9
4130-00-119-1266INTERCHANGEABLE
CHILLER,WATER,REFRIGERATING
5940-00-171-0245INTERCHANGEABLE
TERMINAL BOARD
0165PC8
5360-00-314-7168INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
E3213-2PC3809
4310-00-423-1517INTERCHANGEABLE
RING,VALVE
772719C91
3030-00-896-0542INTERCHANGEABLE
BELT,V
B80
5950-01-198-6930INTERCHANGEABLE
TRANSFORMER,POWER
3809

Frequently Asked Questions

What is NSN 5945-00-850-7101?

NSN 5945-00-850-7101 is a Relay,electromagnetic, manufactured by Northrop Grumman Corp Precision Products Plant, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-850-7101?

NSN 5945-00-850-7101 has 7 cross-referenced part numbers: A3809 (Northrop Grumman Corp Precision Products Plant), 54B7154H02 (Westinghouse Electric Corp), 3809 (Northrop Grumman Corp Precision Products Plant), 9975811 (Us Army Aviation and Missile Command), 41RJZ5000ACGSIL (Sigma Instruments Inc) and 2 more.

What NSN replaces 5945-00-850-7101?

There are 7 known substitutes for 5945-00-850-7101: 5310-00-065-4512, 4130-00-119-1266, 5940-00-171-0245 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A3809?

Key specifications for A3809: Center to Center Distance Between Mounting Facilities Parallel to Length: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Frequency in Hertz: 60.0 NOMINAL; Overall Width: 1.500 INCHES NOMINAL IN; Terminal Type and Quantity: 5 PIN ALL FUNCTIONS. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-850-7101 still in active supply?

NSN 5945-00-850-7101 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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