PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HE421A0500Relay,reed

Hamlin Inc · NSN 5945-01-078-6457 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-078-6457 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-078-6457. Primary manufacturer part number: HE421A0500.
Features
  • Relay,reed — FSC 5945
  • Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Operating Voltage Rating and Type at Specified Temp: 6.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Terminal Type and Quantity: 4 PIN ALL FUNCTIONS
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Nominal Operating Current Rating and Type: 30.0 MILLIAMPERES DC SINGLE WINDING
  • Main Contact Load Current Rating at Maximum Rated Voltage: 500.0 MILLIAMPERES AC AND 500.0 MILLIAMPERES DC RESISTIVE LOAD
  • Main Contact Maximum Voltage Rating in Volts: 150.0 AC AND 100.0 DC
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,reed, cataloged under National Stock Number 5945-01-078-6457, 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 Hamlin Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5945-01-078-6457
Primary Part NumberHE421A0500
Item NameRelay,reed
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerHamlin Inc
StatusACTIVE
Nonpile-Up Main Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Operating Voltage Rating and Type at Specified Temp6.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Terminal Type and Quantity4 PIN ALL FUNCTIONS
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Nominal Operating Current Rating and Type30.0 MILLIAMPERES DC SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage500.0 MILLIAMPERES AC AND 500.0 MILLIAMPERES DC RESISTIVE LOAD
Main Contact Maximum Voltage Rating in Volts150.0 AC AND 100.0 DC
Winding DC Resistance Rating200.0 OHMS NOMINAL SINGLE WINDING
Duty TypeCONTINUOUS
Winding Quantity11
Coil Quantity11
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5315-00-209-8751 INTERCHANGEABLE
Pin,retaining
5905-00-236-612790J1R0 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5910-00-280-8195SC-B-125338 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6625-00-309-5442SCC91453 INTERCHANGEABLE
Holder Assy,electri
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5360-00-448-13694730 INTERCHANGEABLE
Spring,helical,extension
Telemechanics Inc
6645-00-719-9137 INTERCHANGEABLE
Clutch,winding and
5935-00-810-1903 INTERCHANGEABLE
Connector,plug,electrical
6515-00-917-36994730 INTERCHANGEABLE
Tube,extension,injection Set
Abbott Laboratories Inc. Div Hospital Products Division
4820-01-058-49934730-1 INTERCHANGEABLE
Valve,check
Howell Laboratories Inc Dba Howell Laboratories Inc
5935-01-108-9067 INTERCHANGEABLE
Connector,plug,electrical
Cross-Reference Index
Part NumberManufacturer
HE421A0500 Hamlin Inc (USA)
ARAM-13006-L Hamlin Inc (USA)
47-30 Spectrum Control Inc Div Weinschel (USA)
Related Parts
5315-00-209-8751INTERCHANGEABLE
PIN,RETAINING
5905-00-236-6127INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
90J1R0
5910-00-280-8195INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
SC-B-125338
6625-00-309-5442INTERCHANGEABLE
HOLDER ASSY,ELECTRI
SCC91453
5360-00-448-1369INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
4730
6645-00-719-9137INTERCHANGEABLE
CLUTCH,WINDING AND
5935-00-810-1903INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6515-00-917-3699INTERCHANGEABLE
TUBE,EXTENSION,INJECTION SET
4730
4820-01-058-4993INTERCHANGEABLE
VALVE,CHECK
4730-1
5935-01-108-9067INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5340-01-131-0271INTERCHANGEABLE
HARDWARE KIT,ELECTRONIC EQUIPMEN
4730
5310-01-409-0961INTERCHANGEABLE
NUT,PLAIN,HEXAGON
47-30

Frequently Asked Questions

What is NSN 5945-01-078-6457?

NSN 5945-01-078-6457 is a Relay,reed, manufactured by Hamlin Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-078-6457?

NSN 5945-01-078-6457 has 3 cross-referenced part numbers: HE421A0500 (Hamlin Inc), ARAM-13006-L (Hamlin Inc), 47-30 (Spectrum Control Inc Div Weinschel).

What NSN replaces 5945-01-078-6457?

There are 12 known substitutes for 5945-01-078-6457: 5315-00-209-8751, 5905-00-236-6127, 5910-00-280-8195 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HE421A0500?

Key specifications for HE421A0500: Overall Length: 1.200 INCHES NOMINAL1.200 INCHES NOMINAL IN; Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION; Operating Voltage Rating and Type at Specified Temp: 6.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING; Terminal Type and Quantity: 4 PIN ALL FUNCTIONS. 14 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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