PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ET4026Circuit Breaker

L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. · NSN 5925-00-660-3817 · FSC 5925 · No Item Name Available
Verified by PartsTable
NSN 5925-00-660-3817 — this item is cataloged by the U.S. Government under National Stock Number 5925-00-660-3817. Primary manufacturer part number: ET4026.
Features
  • Circuit Breaker — FSC 5925
  • Material: PLASTIC CASE
  • Trip Delay Time in Seconds Per Rated Continuous Current: 22.500 MINIMUM AT 200 PCT AND 30.000 MAXIMUM AT 200 PCT ALL LOCATIONS
  • Main Contact Tripping Mechanism Type: TRIP FREE
  • Actuator Position Designation: AT POLE TWO
  • Manual Actuator Type and Quantity: 1 TOGGLE
  • Actuator Function: TRIP-RESET
  • Trip Release Characteristic: INSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Applications
  • Applications requiring Plastic Case construction
General Description

The Circuit Breaker, cataloged under National Stock Number 5925-00-660-3817, 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 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5925-00-660-3817
Primary Part NumberET4026
Item NameCircuit Breaker
FSC / FSG5925 / 59 — No Item Name Available
ManufacturerL3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.
StatusCANCELLED
MaterialPLASTIC CASE
Trip Delay Time in Seconds Per Rated Continuous Current22.500 MINIMUM AT 200 PCT AND 30.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Main Contact Tripping Mechanism TypeTRIP FREE
Actuator Position DesignationAT POLE TWO
Manual Actuator Type and Quantity1 TOGGLE
Actuator FunctionTRIP-RESET
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Trip Release Ambient Temp Rating40.0 CELSIUS NOMINAL ALL LOCATIONS DEGC
Operating Voltage Type and Rating Per Pole in Volts600.0 AC AND 250.0 DC ALL LOCATIONS
Inclosure Protection Type for Which DesignedGENERAL PURPOSE
Center to Center Distance Between Terminals Parallel to Length4.594 INCHES NOMINAL IN
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S)
Unthreaded Mounting Hole Diameter0.190 INCHES NOMINAL IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.500 INCHES NOMINAL IN
Pole Quantity3
Boss Height0.219 INCHES NOMINAL IN
Distance Between Centerlines of Mounting Facilities Parallel to Body Length4.594 INCHES NOMINAL IN
Center to Center Distance Between Terminals Parallel to Width1.500 INCHES NOMINAL IN
Storage TypeGENERAL PURPOSE WAREHOUSE
Body Height3.594 INCHES NOMINAL IN
Frequency in Hertz60.0 ALL LOCATIONS
Body Length6.000 INCHES NOMINAL IN
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Body Width4.500 INCHES NOMINAL IN
Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps20000.0 AC AND 10000.0 DC ALL LOCATIONS
Reset MethodMANUAL
Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent105.0 ALL LOCATIONS
Terminal Type and Quantity6 COMPRESSION
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5310-00-079-15741500-6 INTERCHANGEABLE
Washer,key
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
5330-00-972-028947023 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
4820-01-043-0935F-47023 INTERCHANGEABLE
Gland Follower
William Powell Company, the Dba Powell Valve Div the Starflo Corporation
6680-01-201-132247023 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
Cross-Reference Index
Part NumberManufacturer
ET4036 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
ET4026 Siemens-Allis Inc (USA)
47023 Valley Power Systems, Inc. (USA)
ET4026 PRIMARY L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA)
Related Parts
5310-00-079-1574INTERCHANGEABLE
WASHER,KEY
1500-6
5330-00-972-0289INTERCHANGEABLE
SEAL,PLAIN ENCASED
47023
4820-01-043-0935INTERCHANGEABLE
GLAND FOLLOWER
F-47023
6680-01-201-1322INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
47023

Frequently Asked Questions

What is NSN 5925-00-660-3817?

NSN 5925-00-660-3817 is a Circuit Breaker, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 5925 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5925-00-660-3817?

NSN 5925-00-660-3817 has 4 cross-referenced part numbers: ET4036 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), ET4026 (Siemens-Allis Inc), 47023 (Valley Power Systems, Inc.), ET4026 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).

What NSN replaces 5925-00-660-3817?

There are 4 known substitutes for 5925-00-660-3817: 5310-00-079-1574, 5330-00-972-0289, 4820-01-043-0935 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ET4026?

Key specifications for ET4026: Material: PLASTIC CASE; Trip Delay Time in Seconds Per Rated Continuous Current: 22.500 MINIMUM AT 200 PCT AND 30.000 MAXIMUM AT 200 PCT ALL LOCATIONS; Main Contact Tripping Mechanism Type: TRIP FREE; Actuator Position Designation: AT POLE TWO. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5925-00-660-3817 still in active supply?

NSN 5925-00-660-3817 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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