PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4328Relay,electromagnetic

Cooper Industries Inc Busmann Mfg Div · NSN 5945-00-259-2200 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-259-2200 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-259-2200. Primary manufacturer part number: 4328.
Features
  • Relay,electromagnetic — FSC 5945
  • Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN
  • Thread Quantity Per Inch: 32 SINGLE MOUNTING FACILITY
  • Winding Quantity: 1
  • Environmental Protection: HERMETIC
  • Duty Type: CONTINUOUS
  • Operating Voltage Rating and Type at Specified Temp: 30.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Arc Quenching Method: INERT GAS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-259-2200, 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 Cooper Industries Inc Busmann Mfg Div. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-259-2200
Primary Part Number4328
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerCooper Industries Inc Busmann Mfg Div
StatusCANCELLED
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Winding Quantity1
Environmental ProtectionHERMETIC
Duty TypeCONTINUOUS
Operating Voltage Rating and Type at Specified Temp30.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Arc Quenching MethodINERT GAS
Mounting Facility Type and Quantity3 THREADED STUD(S) SINGLE MOUNTING FACILITY
Pile-Up Main Contact Form Arrangement2C
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Main Contact Load Current Rating at Maximum Rated Voltage5.0 AMPERES DC RESISTIVE LOAD
Thread Class2A SINGLE MOUNTING FACILITY A
Nominal Operating Current Rating and Type800.0 MILLIAMPERES DC SINGLE WINDING
Coil Quantity1
Winding DC Resistance Rating300.0 OHMS NOMINAL SINGLE WINDING
Main Contact Maximum Voltage Rating in Volts24.0 DC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
6240-00-274-40151606569-6 INTERCHANGEABLE
Lamp,incandescent
Mission Systems Davenport Inc.
5310-00-298-91044328 INTERCHANGEABLE
Nut,plain,slotted,hexagon
Eaton Corporation
4720-00-393-3904 INTERCHANGEABLE
Hose Assembly,nonmetallic
5910-00-667-7431P50009 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Sprague Electric Co World Hqs
5985-00-781-72784328 INTERCHANGEABLE
Flange,waveguide
General Microwave Corporation Div Kratos Microwave Electronics
5305-00-841-268110277113 INTERCHANGEABLE
Screw,shoulder
Us Army Aviation and Missile Command
5305-01-290-22314328 INTERCHANGEABLE
Screw,shoulder
Parker Hannifin Corporation Div Aerospace Group Headquarters
5985-01-557-95734328 INTERCHANGEABLE
Antenna
Shakespeare Company, Llc Div Military Electronics
Cross-Reference Index
Part NumberManufacturer
4328 Cooper Industries Inc Busmann Mfg Div (USA)
53B9 Vapor Corp Sub of Brunswick Corp (USA)
Related Parts
6240-00-274-4015INTERCHANGEABLE
LAMP,INCANDESCENT
1606569-6
5310-00-298-9104INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
4328
4720-00-393-3904INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5910-00-667-7431INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
P50009
5985-00-781-7278INTERCHANGEABLE
FLANGE,WAVEGUIDE
4328
5305-00-841-2681INTERCHANGEABLE
SCREW,SHOULDER
10277113
5305-01-290-2231INTERCHANGEABLE
SCREW,SHOULDER
4328
5985-01-557-9573INTERCHANGEABLE
ANTENNA
4328

Frequently Asked Questions

What is NSN 5945-00-259-2200?

NSN 5945-00-259-2200 is a Relay,electromagnetic, manufactured by Cooper Industries Inc Busmann Mfg Div, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-259-2200?

NSN 5945-00-259-2200 has 2 cross-referenced part numbers: 4328 (Cooper Industries Inc Busmann Mfg Div), 53B9 (Vapor Corp Sub of Brunswick Corp).

What NSN replaces 5945-00-259-2200?

There are 8 known substitutes for 5945-00-259-2200: 6240-00-274-4015, 5310-00-298-9104, 4720-00-393-3904 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4328?

Key specifications for 4328: Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN; Thread Quantity Per Inch: 32 SINGLE MOUNTING FACILITY; Winding Quantity: 1; Environmental Protection: HERMETIC. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-259-2200 still in active supply?

NSN 5945-00-259-2200 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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