PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J74-0028Circuit Breaker

Ward Leonard Ct Llc · NSN 5925-01-012-6213 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-01-012-6213 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-012-6213. Primary manufacturer part number: J74-0028.
Features
  • Circuit Breaker — FSC 5925
  • Actuator Function: TRIP-RESET
  • Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC ALL LOCATIONS
  • Terminal Type and Quantity: 6 COMPRESSION
  • Trip Release Characteristic: TIME DELAY ALL LOCATIONS
  • Maximum Continuous Load Current Rating Per Pole: 60.0 AMPERES AC ALL LOCATIONS
  • Trip Release Ambient Temp Rating: 40.0 CELSIUS NOMINAL ALL LOCATIONS DEGC
  • Frequency in Hertz: 60.0 ALL LOCATIONS
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-01-012-6213, is classified within Federal Supply Class 5925 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ward Leonard Ct Llc. Government technical data includes 30 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5925-01-012-6213
Primary Part NumberJ74-0028
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerWard Leonard Ct Llc
StatusCANCELLED
Actuator FunctionTRIP-RESET
Operating Voltage Type and Rating Per Pole in Volts600.0 AC ALL LOCATIONS
Terminal Type and Quantity6 COMPRESSION
Trip Release CharacteristicTIME DELAY ALL LOCATIONS
Maximum Continuous Load Current Rating Per Pole60.0 AMPERES AC ALL LOCATIONS
Trip Release Ambient Temp Rating40.0 CELSIUS NOMINAL ALL LOCATIONS DEGC
Frequency in Hertz60.0 ALL LOCATIONS
Reset MethodMANUAL
MaterialPLASTIC CASE
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps15000.0 AC ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Trip Delay Time in Seconds Per Rated Continuous Current85.000 MINIMUM AT 200 PCT AND 240.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Main Contact Tripping Mechanism TypeTRIP FREE
Actuator Position DesignationAT POLE TWO
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent125.0 ALL LOCATIONS
Manual Actuator Type and Quantity1 TOGGLE
Inclosure Protection Type for Which DesignedFUNGUS RESISTANT
Unthreaded Mounting Hole Diameter0.188 INCHES NOMINAL IN
Storage TypeGENERAL PURPOSE WAREHOUSE
Center to Center Distance Between Terminals Parallel to Width1.375 INCHES NOMINAL IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.375 INCHES NOMINAL IN
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S)
Pole Quantity3
Arc Quenching MethodMAGNETIC BLOWOUT
Boss Height0.125 INCHES NOMINAL IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Length4.500 INCHES NOMINAL IN
Fragility FactorMODERATELY RUGGED
Center to Center Distance Between Terminals Parallel to Length5.062 INCHES NOMINAL IN
Body Length6.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5960-00-055-8010580R351H02 INTERCHANGEABLE
Electron Tube
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
2910-00-764-68852A6377 INTERCHANGEABLE
Filter Element,fluid
Napco International Llc Dba Napco International Inc
Cross-Reference Index
Part NumberManufacturer
J74-0028 Ward Leonard Ct Llc (USA)
J74-0028 PRIMARY Ward Leonard Ct Llc (USA)
F3060 Eaton Corporation Dba Eaton Inoac (USA)
FB3060 PRIMARY Eaton Corporation Dba Eaton Inoac (USA)
Related Parts
5960-00-055-8010INTERCHANGEABLE
ELECTRON TUBE
580R351H02
2910-00-764-6885INTERCHANGEABLE
FILTER ELEMENT,FLUID
2A6377

Frequently Asked Questions

What is NSN 5925-01-012-6213?

NSN 5925-01-012-6213 is a Circuit Breaker, manufactured by Ward Leonard Ct Llc, classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-01-012-6213?

NSN 5925-01-012-6213 has 4 cross-referenced part numbers: J74-0028 (Ward Leonard Ct Llc), J74-0028 (Ward Leonard Ct Llc), F3060 (Eaton Corporation Dba Eaton Inoac), FB3060 (Eaton Corporation Dba Eaton Inoac).

What NSN replaces 5925-01-012-6213?

There are 2 known substitutes for 5925-01-012-6213: 5960-00-055-8010, 2910-00-764-6885. Verify interchangeability with system specifications before substitution.

What are the specifications of J74-0028?

Key specifications for J74-0028: Actuator Function: TRIP-RESET; Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC ALL LOCATIONS; Terminal Type and Quantity: 6 COMPRESSION; Trip Release Characteristic: TIME DELAY ALL LOCATIONS. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-01-012-6213 still in active supply?

NSN 5925-01-012-6213 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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