PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GB-520SReactor

Magnetika Inc · NSN 5950-00-908-8659 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-908-8659 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-908-8659. Primary manufacturer part number: GB-520S.
Features
  • Reactor — FSC 5950
  • Inductance Rating: 6.00 HENRY NOMINAL SINGLE COMPONENT FIRST WINDING
  • Winding Operating Current: 2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST WINDING
  • Body Length: 0.469 INCHES MAXIMUM IN
  • Reliability Indicator: NOT ESTABLISHED
  • Rating Method: ELECTRICAL SINGLE COMPONENT ALL WINDING
  • Mounting Method: TERMINAL SINGLE GROUP
  • Terminal Type and Quantity: 4 WIRE LEAD
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-908-8659, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Magnetika Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-908-8659
Primary Part NumberGB-520S
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMagnetika Inc
StatusACTIVE
Inductance Rating6.00 HENRY NOMINAL SINGLE COMPONENT FIRST WINDING
Winding Operating Current2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST WINDING
Body Length0.469 INCHES MAXIMUM IN
Reliability IndicatorNOT ESTABLISHED
Rating MethodELECTRICAL SINGLE COMPONENT ALL WINDING
Mounting MethodTERMINAL SINGLE GROUP
Terminal Type and Quantity4 WIRE LEAD
Winding Operating Current5.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND WINDING
Inductance Rating1.50 HENRY NOMINAL SINGLE COMPONENT SECOND WINDING
Body Outside Diameter0.344 INCHES MAXIMUM IN
Inductance TypeFIXED
Inclosure TypeHERMETICALLY SEALED
Winding Quantity2 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-00-278-575700520 INTERCHANGEABLE
Cup,oil,lubricating
Gits Mfg Co Inc
Cross-Reference Index
Part NumberManufacturer
GB-520 United Transformer Corp Sub of Opt Industries Inc (USA)
GB-520S PRIMARY Magnetika Inc (USA)
GB-520 Magnetika Inc (USA)
GB-520S United Transformer Corp Sub of Opt Industries Inc (USA)
Related Parts
4730-00-278-5757INTERCHANGEABLE
CUP,OIL,LUBRICATING
00520

Frequently Asked Questions

What is NSN 5950-00-908-8659?

NSN 5950-00-908-8659 is a Reactor, manufactured by Magnetika Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-908-8659?

NSN 5950-00-908-8659 has 4 cross-referenced part numbers: GB-520 (United Transformer Corp Sub of Opt Industries Inc), GB-520S (Magnetika Inc), GB-520 (Magnetika Inc), GB-520S (United Transformer Corp Sub of Opt Industries Inc).

What NSN replaces 5950-00-908-8659?

There is 1 known substitute for 5950-00-908-8659: 4730-00-278-5757. Verify interchangeability with system specifications before substitution.

What are the specifications of GB-520S?

Key specifications for GB-520S: Inductance Rating: 6.00 HENRY NOMINAL SINGLE COMPONENT FIRST WINDING; Winding Operating Current: 2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT FIRST WINDING; Body Length: 0.469 INCHES MAXIMUM IN; Reliability Indicator: NOT ESTABLISHED. 13 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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